Java 图像定位-Android
在过去一个月左右的时间里，我一直在断断续续地与这个bug作斗争。每次我认为我已经修复了它，它似乎又以某种形式回来了Java 图像定位-Android,java,android,image,bitmap,exif,Java,Android,Image,Bitmap,Exif,在过去一个月左右的时间里，我一直在断断续续地与这个bug作斗争。每次我认为我已经修复了它，它似乎又以某种形式回来了 public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException { final int TRY_SCALE_TO_THIS_SIZE = 1024; Log.d(TAG, "getScaledBitmap
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
// Gets an Images Orientation
public static int getOrientationEXIF(Context context, Uri uri) {
int orientation = 0;
try {
ExifInterface exif = new ExifInterface(uri.getPath());
orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
orientation = 90;
return orientation;
case ExifInterface.ORIENTATION_ROTATE_180:
orientation = 180;
return orientation;
}
} catch (IOException e) {
e.printStackTrace();
}
return 0;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
// Rotate a Bitmap
public static Bitmap rotate(float rotationValue, String filePath) {
Bitmap original= BitmapFactory.decodeFile(filePath);
int width = original.getWidth();
int height = original.getHeight();
Matrix matrix = new Matrix();
matrix.postRotate(rotationValue);
Bitmap rotated = Bitmap.createBitmap(original, 0, 0, width, height, matrix, true);
return rotated;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
更新
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
JHEAD can't open 'file:/external/images/media/3885'
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
更新#2
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
我想我可能已经解决了这个问题，我找到了文件的正确图像路径。您需要考虑所有方向，而不仅仅是90或180。我在用这个
File curFile = new File("path-to-file"); // ... This is an image file from my device.
Bitmap rotatedBitmap;
try {
ExifInterface exif = new ExifInterface(curFile.getPath());
int rotation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
int rotationInDegrees = exifToDegrees(rotation);
Matrix matrix = new Matrix();
if (rotation != 0f) {matrix.preRotate(rotationInDegrees);}
rotatedBitmap = Bitmap.createBitmap(bitmap,0,0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}catch(IOException ex){
Log.e(TAG, "Failed to get Exif data", ex);
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
这个问题真糟糕！我注意到这是选择照片而不是拍摄照片时的一个问题。我在这个裁剪库的代码中找到了答案，它似乎总是在裁剪时正确地显示对象（尽管它有时会返回错误方向的对象）。无论如何，首先，按照我在回答中选择的方式选择照片：
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
private void setRotationVariables(Uri uri)
{
m_rotationInDegrees = ImageOrientationUtil.getExifRotation(ImageOrientationUtil
.getFromMediaUri(
this,
getContentResolver(),
uri));
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.media.ExifInterface;
import android.net.Uri;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import java.io.Closeable;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
public class ImageOrientationUtil
{
private static final String SCHEME_FILE = "file";
private static final String SCHEME_CONTENT = "content";
public static void closeSilently(@Nullable Closeable c) {
if (c == null) return;
try {
c.close();
} catch (Throwable t) {
// Do nothing
}
}
public static int getExifRotation(File imageFile) {
if (imageFile == null) return 0;
try {
ExifInterface exif = new ExifInterface(imageFile.getAbsolutePath());
// We only recognize a subset of orientation tag values
switch (exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_UNDEFINED)) {
case ExifInterface.ORIENTATION_ROTATE_90:
return 90;
case ExifInterface.ORIENTATION_ROTATE_180:
return 180;
case ExifInterface.ORIENTATION_ROTATE_270:
return 270;
default:
return ExifInterface.ORIENTATION_UNDEFINED;
}
} catch (IOException e) {
// Log.e("Error getting Exif data", e);
return 0;
}
}
@Nullable
public static File getFromMediaUri(Context context, ContentResolver resolver, Uri uri) {
if (uri == null) return null;
if (SCHEME_FILE.equals(uri.getScheme())) {
return new File(uri.getPath());
} else if (SCHEME_CONTENT.equals(uri.getScheme())) {
final String[] filePathColumn = { MediaStore.MediaColumns.DATA, MediaStore.MediaColumns.DISPLAY_NAME };
Cursor cursor = null;
try {
cursor = resolver.query(uri, filePathColumn, null, null, null);
if (cursor != null && cursor.moveToFirst()) {
final int columnIndex = (uri.toString().startsWith("content://com.google.android.gallery3d")) ?
cursor.getColumnIndex(MediaStore.MediaColumns.DISPLAY_NAME) :
cursor.getColumnIndex(MediaStore.MediaColumns.DATA);
// Picasa images on API 13+
if (columnIndex != -1) {
String filePath = cursor.getString(columnIndex);
if (!TextUtils.isEmpty(filePath)) {
return new File(filePath);
}
}
}
} catch (IllegalArgumentException e) {
// Google Drive images
return getFromMediaUriPfd(context, resolver, uri);
} catch (SecurityException ignored) {
// Nothing we can do
} finally {
if (cursor != null) cursor.close();
}
}
return null;
}
private static String getTempFilename(Context context) throws IOException {
File outputDir = context.getCacheDir();
File outputFile = File.createTempFile("image", "tmp", outputDir);
return outputFile.getAbsolutePath();
}
@Nullable
private static File getFromMediaUriPfd(Context context, ContentResolver resolver, Uri uri) {
if (uri == null) return null;
FileInputStream input = null;
FileOutputStream output = null;
try {
ParcelFileDescriptor pfd = resolver.openFileDescriptor(uri, "r");
FileDescriptor fd = pfd.getFileDescriptor();
input = new FileInputStream(fd);
String tempFilename = getTempFilename(context);
output = new FileOutputStream(tempFilename);
int read;
byte[] bytes = new byte[4096];
while ((read = input.read(bytes)) != -1) {
output.write(bytes, 0, read);
}
return new File(tempFilename);
} catch (IOException ignored) {
// Nothing we can do
} finally {
closeSilently(input);
closeSilently(output);
}
return null;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
}哲学上的答案很好，但他的评论也是正确的：
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
private void setRotationVariables(Uri uri)
{
m_rotationInDegrees = ImageOrientationUtil.getExifRotation
(ImageOrientationUtil.getFromMediaUri(
this,
getContentResolver(),
uri));
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
private static int setRotationVariables(Uri uri) {
int rotationInDegrees = ImageOrientationUtil.getExifRotation(ImageOrientationUtil
.getFileFromMediaUri(
appCtx,
appCtx.getContentResolver(),
uri));
Log.d(TAG, "setRotationVariables:" + "according to original Image Uri Exif details we need to rotate in "+rotationInDegrees + " Degrees");
return rotationInDegrees;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
int rotationDegree = setRotationVariables(uri);
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
public static Bitmap getScaledBitmapFromUri(Uri uri) throws FileNotFoundException, IOException {
final int TRY_SCALE_TO_THIS_SIZE = 1024;
Log.d(TAG, "getScaledBitmapFromUri:: calling setRotationVariables() to figure rotationDegree");
int rotationDegree = setRotationVariables(uri);
Context ctx = MessagingApp.getContext();
InputStream input = ctx.getContentResolver().openInputStream(uri);
BitmapFactory.Options onlyBoundsOptions = new BitmapFactory.Options();
onlyBoundsOptions.inJustDecodeBounds = true;
onlyBoundsOptions.inDither = true;//optional
onlyBoundsOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
BitmapFactory.decodeStream(input, null, onlyBoundsOptions);
input.close();
if ( (onlyBoundsOptions.outWidth == -1) || (onlyBoundsOptions.outHeight == -1) )
return null;
int BiggestOriginalSize = (onlyBoundsOptions.outHeight > onlyBoundsOptions.outWidth) ? onlyBoundsOptions.outHeight : onlyBoundsOptions.outWidth;
//we will add 1 to Math.round (BiggestOriginalSize / (double)TRY_SCALE_TO_THIS_SIZE) in order to harden the scaling(we need smaller images for this project!)
double ratio = (BiggestOriginalSize > TRY_SCALE_TO_THIS_SIZE) ? (1 + Math.round(BiggestOriginalSize / (double) TRY_SCALE_TO_THIS_SIZE)) : 1.0;
Log.w(TAG, "getScaledBitmapFromUri:: originalSize: " + BiggestOriginalSize + "PX, TRY_SCALE_TO_THIS_SIZE (if original is bigger):" + TRY_SCALE_TO_THIS_SIZE +"PX");
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inSampleSize = getPowerOfTwoForSampleRatio(ratio); //this one will give abstract results (sometimes bigger then TRY_SCALE_TO_THIS_SIZE)
Log.w(TAG, format("bitmapOptions.inSampleSize: " + bitmapOptions.inSampleSize));
bitmapOptions.inJustDecodeBounds = false; //check this out!!! maybe delete?
bitmapOptions.inDither = true;//optional
bitmapOptions.inPreferredConfig = Bitmap.Config.ARGB_8888;//optional
//bitmapOptions.rogetrotationInDegrees
input = ctx.getContentResolver().openInputStream(uri);
Bitmap bitmap = BitmapFactory.decodeStream(input, null, bitmapOptions);
//bitmap = findExactInSampleSize(onlyBoundsOptions, TRY_SCALE_TO_THIS_SIZE, bitmap); // this one will never give bigger length then TRY_SCALE_TO_THIS_SIZE
if (rotationDegree > 0) {
Matrix matrix = new Matrix();
matrix.setRotate(rotationDegree);
Log.w(TAG, "recreating bitmap with rotation of " + rotationDegree + " degrees" );
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
}
Log.w(TAG, "after decodeStream : bitmap.getWidth(): " + bitmap.getWidth() + "PX, bitmap.getHeight(): " + bitmap.getHeight() +"PX.");
input.close();
return bitmap;
}
非常感谢您的回复，我刚刚实现了您的方法，但我使用的测试图像仍然旋转了90度-Clockwise@Richard你是否尝试记录exif int以查看图像读取的内容？int rotation=0，int ROTATIONDELENGES=0。刚刚收到反馈我自己在纵向模式下拍摄了当前正在测试的图像。Android Gallery还以肖像的形式展示了它。所以我真的不确定到底发生了什么。Richard-额外的ExiffinInterface定向真的帮了你吗？很抱歉我打了一轮高尔夫…一点也不担心：）。看起来是这样，到目前为止。我的一个测试人员不在，所以他回来后会让他测试它。但这肯定对我有帮助这是我今天遇到的其他问题。非常感谢：）。很高兴来到这里。再次请注意，根据实际设备硬件的不同，每个设备的摄像头方向会有所不同。有些设备可能有更薄的挡板，这会导致摄像头在任一方向旋转90度或更多度。我会记住这一点。非常感谢您的帮助。s我的意思是，在活动结果中，在与选择照片相关的结果中，调用：setRotationVariables（data.getData），其中“data”是Intent参数的名称