Examples with AnyThread android.support.annotation.AnyThread used on opensource projects

Example 1 with AnyThread

use of android.support.annotation.AnyThread in project subsampling-scale-image-view by davemorrissey.

the class SubsamplingScaleImageView method getExifOrientation.

/**
     * Helper method for load tasks. Examines the EXIF info on the image file to determine the orientation.
     * This will only work for external files, not assets, resources or other URIs.
     */
@AnyThread
private int getExifOrientation(Context context, String sourceUri) {
    int exifOrientation = ORIENTATION_0;
    if (sourceUri.startsWith(ContentResolver.SCHEME_CONTENT)) {
        Cursor cursor = null;
        try {
            String[] columns = { MediaStore.Images.Media.ORIENTATION };
            cursor = context.getContentResolver().query(Uri.parse(sourceUri), columns, null, null, null);
            if (cursor != null) {
                if (cursor.moveToFirst()) {
                    int orientation = cursor.getInt(0);
                    if (VALID_ORIENTATIONS.contains(orientation) && orientation != ORIENTATION_USE_EXIF) {
                        exifOrientation = orientation;
                    } else {
                        Log.w(TAG, "Unsupported orientation: " + orientation);
                    }
                }
            }
        } catch (Exception e) {
            Log.w(TAG, "Could not get orientation of image from media store");
        } finally {
            if (cursor != null) {
                cursor.close();
            }
        }
    } else if (sourceUri.startsWith(ImageSource.FILE_SCHEME) && !sourceUri.startsWith(ImageSource.ASSET_SCHEME)) {
        try {
            ExifInterface exifInterface = new ExifInterface(sourceUri.substring(ImageSource.FILE_SCHEME.length() - 1));
            int orientationAttr = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
            if (orientationAttr == ExifInterface.ORIENTATION_NORMAL || orientationAttr == ExifInterface.ORIENTATION_UNDEFINED) {
                exifOrientation = ORIENTATION_0;
            } else if (orientationAttr == ExifInterface.ORIENTATION_ROTATE_90) {
                exifOrientation = ORIENTATION_90;
            } else if (orientationAttr == ExifInterface.ORIENTATION_ROTATE_180) {
                exifOrientation = ORIENTATION_180;
            } else if (orientationAttr == ExifInterface.ORIENTATION_ROTATE_270) {
                exifOrientation = ORIENTATION_270;
            } else {
                Log.w(TAG, "Unsupported EXIF orientation: " + orientationAttr);
            }
        } catch (Exception e) {
            Log.w(TAG, "Could not get EXIF orientation of image");
        }
    }
    return exifOrientation;
}