question: private Bitmap createPhotoThumbnail ( InputStream imageStream , int rotationAngle ) { Bitmap bitmapRetValue = null ; final int MAX_SIZE = 1024 , SAMPLE_SIZE = 0 , QUALITY = 100 ; BitmapFactory . Options options = new BitmapFactory . Options ( ) ; options . inPreferredConfig = Bitmap . Config . ARGB_8888 ; options . outWidth = - 1 ; options . outHeight = - 1 ; try { InputStream stream = ImageUtils . resizeImage ( imageStream , MAX_SIZE , SAMPLE_SIZE , QUALITY ) ; imageStream . close ( ) ; bitmapRetValue = BitmapFactory . decodeStream ( stream , null , options ) ; if ( 0 != rotationAngle ) { android . graphics . Matrix bitmapMatrix = new android . graphics . Matrix ( ) ; bitmapMatrix . postRotate ( rotationAngle ) ; bitmapRetValue = Bitmap . createBitmap ( bitmapRetValue , 0 , 0 , bitmapRetValue . getWidth ( ) , bitmapRetValue . getHeight ( ) , bitmapMatrix , false ) ; } System . gc ( ) ; } catch ( OutOfMemoryError e ) { Log . e ( LOG_TAG , "## createPhotoThumbnail : out of memory" ) ; } catch ( Exception e ) { Log . e ( LOG_TAG , "## createPhotoThumbnail() Exception Msg=" + e . getMessage ( ) ) ; } return bitmapRetValue ; }
target:  Create a thumbnail from an image stream with a rotation angle.