Android 安卓摄像头

有人能给我提供一些关于从相机捕获“完整”图像的代码示例，然后将其转换为“startActivityForResult”中的一个字节，以及在imageView中显示的位图。任何帮助都将受到真诚的感谢

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山姆

你可能已经看到了这一点，但是。这里有一个很棒的教程

用于位图

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实际上，我有一个应用程序可以做到这一点，我可以在下班回家后发送给你。

你可能已经看到了这一点，但是。这里有一个很棒的教程

用于位图

---

实际上，我有一个应用程序可以做到这一点，我可以在下班回家后发送给你。

处理相机有点棘手。下面是我为一个应用程序编写的一段代码

private final int RECEIVE_CAMERA_PICTURE = 10;
private Uri mCameraUri = null;

mCameraUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new ContentValues());
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCameraUri);
mtimeCameraAcessed = System.currentTimeMillis();
startActivityForResult(cameraIntent, RECEIVE_CAMERA_PICTURE);

现在，要处理图像捕获，应将以下内容放在onActivityResult（）方法中。您会注意到，我已经输入了一个复选框来获取所拍摄图像的方向。此值将有助于通过不同活动中的ImageView显示图像：

int orientation = -10;

Intent displayCameraPictureIntent = new Intent(MainActivity.this, FilterActivity.class);
displayCameraPictureIntent.setData(mCameraUri);

String filePath = OtherUtils.getRealPathFromURI(mContext, mCameraUri);
long fileSize = new File(filePath).length();

Cursor mediaCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[] {MediaStore.Images.ImageColumns.ORIENTATION, MediaStore.MediaColumns.SIZE }, MediaStore.MediaColumns.DATE_ADDED + ">=?", new String[]{String.valueOf(mtimeCameraAcessed/1000 - 1)}, MediaStore.MediaColumns.DATE_ADDED + " desc");

//ensure that the app doesn't consume inappropriate data
if (mediaCursor != null && mtimeCameraAcessed != 0 && mediaCursor.getCount() != 0 ) {
    while(mediaCursor.moveToNext()){
         long size = mediaCursor.getLong(1);
         //Extra check to make sure that we are getting the orientation from the proper file
         if(size == fileSize){
               orientation = mediaCursor.getInt(0);
               break;
         }
    }
}


displayCameraPictureIntent.putExtra("orientationValue", orientation);
startActivity(displayCameraPictureIntent);

private Bitmap imageBitmap = null;

Uri imageUri = getIntent().getData();
shareImageUri = imageUri;
try {
imageBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (Exception e) {
 // TODO Auto-generated catch block         
} 

// check whether image is in landscape or portrait mode
if(getIntent().getIntExtra("orientationValue", 1) == 90) { 
     //image is in portrait. So, rotate the image by 90degrees so that it is displayed in portrait mode
}

//now, set the bitmap to the appropriate imageView. You might want to scale the bitmap, to avoid
//memory issues.

现在，要在新活动中显示图像：

int orientation = -10;

Intent displayCameraPictureIntent = new Intent(MainActivity.this, FilterActivity.class);
displayCameraPictureIntent.setData(mCameraUri);

String filePath = OtherUtils.getRealPathFromURI(mContext, mCameraUri);
long fileSize = new File(filePath).length();

Cursor mediaCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[] {MediaStore.Images.ImageColumns.ORIENTATION, MediaStore.MediaColumns.SIZE }, MediaStore.MediaColumns.DATE_ADDED + ">=?", new String[]{String.valueOf(mtimeCameraAcessed/1000 - 1)}, MediaStore.MediaColumns.DATE_ADDED + " desc");

//ensure that the app doesn't consume inappropriate data
if (mediaCursor != null && mtimeCameraAcessed != 0 && mediaCursor.getCount() != 0 ) {
    while(mediaCursor.moveToNext()){
         long size = mediaCursor.getLong(1);
         //Extra check to make sure that we are getting the orientation from the proper file
         if(size == fileSize){
               orientation = mediaCursor.getInt(0);
               break;
         }
    }
}


displayCameraPictureIntent.putExtra("orientationValue", orientation);
startActivity(displayCameraPictureIntent);

private Bitmap imageBitmap = null;

Uri imageUri = getIntent().getData();
shareImageUri = imageUri;
try {
imageBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (Exception e) {
 // TODO Auto-generated catch block         
} 

// check whether image is in landscape or portrait mode
if(getIntent().getIntExtra("orientationValue", 1) == 90) { 
     //image is in portrait. So, rotate the image by 90degrees so that it is displayed in portrait mode
}

//now, set the bitmap to the appropriate imageView. You might want to scale the bitmap, to avoid
//memory issues.

您还需要检查此链接，它解释了这段代码的方向：

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如果您还有任何问题或顾虑，请告诉我。如果您想使用Camera api，我预先警告您，这是一项极具挑战性的任务，但绝对是可行的。

处理摄像头有点棘手。下面是我为一个应用程序编写的一段代码

private final int RECEIVE_CAMERA_PICTURE = 10;
private Uri mCameraUri = null;

mCameraUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new ContentValues());
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCameraUri);
mtimeCameraAcessed = System.currentTimeMillis();
startActivityForResult(cameraIntent, RECEIVE_CAMERA_PICTURE);

现在，要处理图像捕获，应将以下内容放在onActivityResult（）方法中。您会注意到，我已经输入了一个复选框来获取所拍摄图像的方向。此值将有助于通过不同活动中的ImageView显示图像：

int orientation = -10;

Intent displayCameraPictureIntent = new Intent(MainActivity.this, FilterActivity.class);
displayCameraPictureIntent.setData(mCameraUri);

String filePath = OtherUtils.getRealPathFromURI(mContext, mCameraUri);
long fileSize = new File(filePath).length();

Cursor mediaCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[] {MediaStore.Images.ImageColumns.ORIENTATION, MediaStore.MediaColumns.SIZE }, MediaStore.MediaColumns.DATE_ADDED + ">=?", new String[]{String.valueOf(mtimeCameraAcessed/1000 - 1)}, MediaStore.MediaColumns.DATE_ADDED + " desc");

//ensure that the app doesn't consume inappropriate data
if (mediaCursor != null && mtimeCameraAcessed != 0 && mediaCursor.getCount() != 0 ) {
    while(mediaCursor.moveToNext()){
         long size = mediaCursor.getLong(1);
         //Extra check to make sure that we are getting the orientation from the proper file
         if(size == fileSize){
               orientation = mediaCursor.getInt(0);
               break;
         }
    }
}


displayCameraPictureIntent.putExtra("orientationValue", orientation);
startActivity(displayCameraPictureIntent);

private Bitmap imageBitmap = null;

Uri imageUri = getIntent().getData();
shareImageUri = imageUri;
try {
imageBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (Exception e) {
 // TODO Auto-generated catch block         
} 

// check whether image is in landscape or portrait mode
if(getIntent().getIntExtra("orientationValue", 1) == 90) { 
     //image is in portrait. So, rotate the image by 90degrees so that it is displayed in portrait mode
}

//now, set the bitmap to the appropriate imageView. You might want to scale the bitmap, to avoid
//memory issues.

现在，要在新活动中显示图像：

int orientation = -10;

Intent displayCameraPictureIntent = new Intent(MainActivity.this, FilterActivity.class);
displayCameraPictureIntent.setData(mCameraUri);

String filePath = OtherUtils.getRealPathFromURI(mContext, mCameraUri);
long fileSize = new File(filePath).length();

Cursor mediaCursor = getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, new String[] {MediaStore.Images.ImageColumns.ORIENTATION, MediaStore.MediaColumns.SIZE }, MediaStore.MediaColumns.DATE_ADDED + ">=?", new String[]{String.valueOf(mtimeCameraAcessed/1000 - 1)}, MediaStore.MediaColumns.DATE_ADDED + " desc");

//ensure that the app doesn't consume inappropriate data
if (mediaCursor != null && mtimeCameraAcessed != 0 && mediaCursor.getCount() != 0 ) {
    while(mediaCursor.moveToNext()){
         long size = mediaCursor.getLong(1);
         //Extra check to make sure that we are getting the orientation from the proper file
         if(size == fileSize){
               orientation = mediaCursor.getInt(0);
               break;
         }
    }
}


displayCameraPictureIntent.putExtra("orientationValue", orientation);
startActivity(displayCameraPictureIntent);

private Bitmap imageBitmap = null;

Uri imageUri = getIntent().getData();
shareImageUri = imageUri;
try {
imageBitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (Exception e) {
 // TODO Auto-generated catch block         
} 

// check whether image is in landscape or portrait mode
if(getIntent().getIntExtra("orientationValue", 1) == 90) { 
     //image is in portrait. So, rotate the image by 90degrees so that it is displayed in portrait mode
}

//now, set the bitmap to the appropriate imageView. You might want to scale the bitmap, to avoid
//memory issues.

您还需要检查此链接，它解释了这段代码的方向：

如果您还有任何问题或顾虑，请告诉我。相反，如果您想使用CameraAPI，我预先警告您，这是一项极具挑战性的任务，但绝对可行