android自定义摄像头方向
我已经定义了一个自定义相机视图来拍照。我遇到的问题是，如果照片是用纵向相机拍摄的，图像会旋转90度。我想和Instagram相机一样。 我想要的是，如果我以任何角度旋转相机，我希望位图处于纵向并保存到设备 请帮帮我 这是我的密码：android自定义摄像头方向,android,android-camera,Android,Android Camera,我已经定义了一个自定义相机视图来拍照。我遇到的问题是，如果照片是用纵向相机拍摄的，图像会旋转90度。我想和Instagram相机一样。 我想要的是，如果我以任何角度旋转相机，我希望位图处于纵向并保存到设备 请帮帮我 这是我的密码： private PictureCallback mPicture = new PictureCallback() { public void onPictureTaken(byte[] data, Camera camera) { saf
private PictureCallback mPicture = new PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
safeToTakePicture = true;
File pictureFile = new File(Common.FILE_IMAGE_STORAGE, filename);
if (pictureFile.exists()) {
pictureFile.delete();
}
try {
FileOutputStream purge = new FileOutputStream(pictureFile);
purge.write(data);
purge.close();
} catch (FileNotFoundException e) {
}
catch (IOException e) {
}
if (data != null) {
new AsyncBitmapCreation(filepath).execute();
}
}
};
class AsyncBitmapCreation extends AsyncTask<Void, Void, Bitmap> {
byte[] data;
public AsyncBitmapCreation(byte[] data) {
this.data = data;
}
@Override
protected Bitmap doInBackground(Void... params) {
return rotateImage(data);
}
@Override
protected void onPostExecute(Bitmap result) {
bitmap = result;
}
}
private Bitmap rotateImage(final byte[] data) {
Bitmap scaledBitmap = null;
try {
BitmapFactory.Options options = new BitmapFactory.Options();
options.inSampleSize = 3;
Bitmap bmp = BitmapFactory.decodeByteArray(data, 0, data.length,
options);
int actualHeight = bmp.getHeight();
int actualWidth = bmp.getWidth();
float maxHeight = 1020.0f;
float maxWidth = 680.0f;
float imgRatio = actualWidth / actualHeight;
float maxRatio = maxWidth / maxHeight;
if (actualHeight > maxHeight || actualWidth > maxWidth) {
if (imgRatio < maxRatio) {
imgRatio = maxHeight / actualHeight;
actualWidth = (int) (imgRatio * actualWidth);
actualHeight = (int) maxHeight;
} else if (imgRatio > maxRatio) {
imgRatio = maxWidth / actualWidth;
actualHeight = (int) (imgRatio * actualHeight);
actualWidth = (int) maxWidth;
} else {
actualHeight = (int) maxHeight;
actualWidth = (int) maxWidth;
}
}
options.inSampleSize = calculateInSampleSize(options, actualWidth,
actualHeight);
// inJustDecodeBounds set to false to load the actual bitmap
options.inJustDecodeBounds = false;
options.inPurgeable = true;
options.inInputShareable = true;
options.inTempStorage = new byte[16 * 1024];
try {
Bitmap.Config conf = Bitmap.Config.ARGB_8888;
scaledBitmap = Bitmap.createBitmap(actualWidth, actualHeight,
conf);
} catch (OutOfMemoryError exception) {
}
float ratioX = actualWidth / (float) options.outWidth;
float ratioY = actualHeight / (float) options.outHeight;
float middleX = actualWidth / 2.0f;
float middleY = actualHeight / 2.0f;
Matrix scaleMatrix = new Matrix();
scaleMatrix.setScale(ratioX, ratioY, middleX, middleY);
Canvas canvas = new Canvas(scaledBitmap);
canvas.setMatrix(scaleMatrix);
canvas.drawBitmap(bmp, middleX - bmp.getWidth() / 2,
middleY - bmp.getHeight() / 2, new Paint(
Paint.FILTER_BITMAP_FLAG));
ExifInterface exif;
try {
exif = new ExifInterface(fileUri.getPath());
Matrix matrix = new Matrix();
if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
.equalsIgnoreCase("6")) {
matrix.postRotate(90);
} else if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
.equalsIgnoreCase("8")) {
matrix.postRotate(270);
} else if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
.equalsIgnoreCase("3")) {
matrix.postRotate(180);
} else if (exif.getAttribute(ExifInterface.TAG_ORIENTATION)
.equalsIgnoreCase("0")) {
matrix.postRotate(90);
}
scaledBitmap = Bitmap.createBitmap(bmp, 0, 0, bmp.getWidth(),
bmp.getHeight(), matrix, true);
} catch (IOException e) {
}
} catch (Exception e) {
}
return scaledBitmap;
}
您好，请使用此代码，它将帮助您。。。如果你需要帮助，告诉我
public void takePhoto() {
Intent intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
File folder = new File(Environment.getExternalStorageDirectory() + "/"
+ getResources().getString(R.string.app_name));
if (!folder.exists()) {
folder.mkdir();
}
final Calendar c = Calendar.getInstance();
String new_Date = c.get(Calendar.DAY_OF_MONTH) + "-"
+ ((c.get(Calendar.MONTH)) + 1) + "-" + c.get(Calendar.YEAR)
+ " " + c.get(Calendar.HOUR) + "-" + c.get(Calendar.MINUTE)
+ "-" + c.get(Calendar.SECOND);
imageUrl = String.format(
Environment.getExternalStorageDirectory() + "/"
+ getResources().getString(R.string.app_name)
+ "/%s.png", "Accident_Info(" + new_Date + ")");
File photo = new File(imageUrl);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.putExtra("exit", "false");
intent.putExtra(MediaStore.EXTRA_SCREEN_ORIENTATION,
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
AccidentInfo.this.startActivityForResult(intent, CAMERA_PIC_REQUEST);
}
private Bitmap callTempMethod(String tempPath) {
if (tempPath != null) {
Uri selectedImage = Uri.parse(tempPath);
if (!TextUtils.isEmpty(tempPath)) {
LogMessage.i(TAG, "LLLpath::" + tempPath);
File file = new File(tempPath);
if (selectedImage.toString().startsWith("content")) {
return DealershipApplication.decodeStrem(file,
selectedImage, mContext);
} else {
if (!file.isDirectory()) {
return DealershipApplication.decodeFile(file, 10, 0);
} else {
return null;
}
}
} else
return null;
} else {
return null;
}
}
public static int calculateInSampleSize(BitmapFactory.Options options,
int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height
/ (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
return inSampleSize;
}
public static Bitmap getSampleBitmapFromFile(String bitmapFilePath,
int reqWidth, int reqHeight) throws FileNotFoundException {
// calculating image size
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(
new FileInputStream(new File(bitmapFilePath)), null, options);
int scale = calculateInSampleSize(options, reqWidth, reqHeight);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
return BitmapFactory.decodeStream(new FileInputStream(new File(
bitmapFilePath)), null, o2);
}
当你拍摄照片时，它会以爱国者模式保存。请根据您的需要更改此代码。谢谢。如果此代码不适用，请告诉我。我会在其他方面帮助你。你能给我推荐一些surfaceview的例子吗？现在我已经更新了所有的课程。看看。。。根据您的需要使用代码。我不是在使用Intent，而是在使用surfaceview和camerapreview
public void takePhoto() {
Intent intent = new Intent(
android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
File folder = new File(Environment.getExternalStorageDirectory() + "/"
+ getResources().getString(R.string.app_name));
if (!folder.exists()) {
folder.mkdir();
}
final Calendar c = Calendar.getInstance();
String new_Date = c.get(Calendar.DAY_OF_MONTH) + "-"
+ ((c.get(Calendar.MONTH)) + 1) + "-" + c.get(Calendar.YEAR)
+ " " + c.get(Calendar.HOUR) + "-" + c.get(Calendar.MINUTE)
+ "-" + c.get(Calendar.SECOND);
imageUrl = String.format(
Environment.getExternalStorageDirectory() + "/"
+ getResources().getString(R.string.app_name)
+ "/%s.png", "Accident_Info(" + new_Date + ")");
File photo = new File(imageUrl);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
intent.putExtra("exit", "false");
intent.putExtra(MediaStore.EXTRA_SCREEN_ORIENTATION,
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photo));
AccidentInfo.this.startActivityForResult(intent, CAMERA_PIC_REQUEST);
}
private Bitmap callTempMethod(String tempPath) {
if (tempPath != null) {
Uri selectedImage = Uri.parse(tempPath);
if (!TextUtils.isEmpty(tempPath)) {
LogMessage.i(TAG, "LLLpath::" + tempPath);
File file = new File(tempPath);
if (selectedImage.toString().startsWith("content")) {
return DealershipApplication.decodeStrem(file,
selectedImage, mContext);
} else {
if (!file.isDirectory()) {
return DealershipApplication.decodeFile(file, 10, 0);
} else {
return null;
}
}
} else
return null;
} else {
return null;
}
}
public static int calculateInSampleSize(BitmapFactory.Options options,
int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int heightRatio = Math.round((float) height
/ (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
return inSampleSize;
}
public static Bitmap getSampleBitmapFromFile(String bitmapFilePath,
int reqWidth, int reqHeight) throws FileNotFoundException {
// calculating image size
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(
new FileInputStream(new File(bitmapFilePath)), null, options);
int scale = calculateInSampleSize(options, reqWidth, reqHeight);
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize = scale;
return BitmapFactory.decodeStream(new FileInputStream(new File(
bitmapFilePath)), null, o2);
}