Im Moment verwende ich getContentResolver (). Query () / managedQuery (), um einen Cursor zum Abrufen von Bildern aus der Galerie-App zu erhalten. Da die von mir verwendeten APIs teilweise veraltet sind, wollte ich CursorLoader mit LoaderManager verwenden.

/**
 * Creates a cursor to access the content defined by the image uri for API
 * version 11 and newer.
 * 
 * @return The created cursor.
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
private Cursor createCursorHoneycomb() {
    String[] projection = {
            MediaStore.Images.Media.DATA
    };
    Cursor cursor = getContentResolver().query(imageUri, projection, null, null, null);

    return cursor;
}

/**
 * Creates a cursor to access the content defined by the image uri from API
 * version 8 to 10.
 * 
 * @return The created cursor.
 */
@SuppressWarnings("deprecation")
@TargetApi(Build.VERSION_CODES.FROYO)
private Cursor createCursorFroyo() {
    String[] projection = {
            MediaStore.Images.Media.DATA
    };
    Cursor cursor = managedQuery(imageUri, projection, null, null, null);

    return cursor;
}

Da ich keine ListView habe, verwende ich keinen Adapter. Ich habe gerade eine Bild-Bitmap für eine ImageView festgelegt.

/**
 * Sets the image bitmap for the image view.
 */
private void setupImageView() {
    String imagePath = getImagePathFromUri(imageUri);
    Bitmap bitmap = BitmapFactory.decodeFile(imagePath);
    ImageView imageView = (ImageView) findViewById(R.id.image_view);

    imageView.setImageBitmap(bitmap);
}

/**
 * Returns an image path created from the supplied image uri.
 * 
 * @param imageUri The supplied image uri.
 * @return Returns the created image path.
 */
@SuppressWarnings("deprecation")
private String getImagePathFromUri(Uri imageUri) {
    Cursor cursor = null;
    String imagePath = null;

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        cursor = createCursorHoneycomb();
    } else {
        cursor = createCursorFroyo();
    }

    // if image is loaded from gallery
    if (cursor != null) {
        startManagingCursor(cursor);

        int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

        cursor.moveToFirst();
        imagePath = cursor.getString(columnIndex);
    }
    // if image is loaded from file manager
    else {
        imagePath = imageUri.getPath();
    }

    return imagePath;
}

Ist es möglich, CursorLoader mit LoaderManager zu verwenden, um Bilder aus der Galerie-App oder einem Dateimanager zu laden? Ich kann keine Lösung finden.