question: public static Bitmap createScaledBitmap ( Bitmap bitmap , float scaleFactor ) { Matrix m = new Matrix ( ) ; m . setRectToRect ( new RectF ( 0 , 0 , bitmap . getWidth ( ) , bitmap . getHeight ( ) ) , new RectF ( 0 , 0 , bitmap . getWidth ( ) * scaleFactor , bitmap . getHeight ( ) * scaleFactor ) , Matrix . ScaleToFit . CENTER ) ; return Bitmap . createBitmap ( bitmap , 0 , 0 , bitmap . getWidth ( ) , bitmap . getHeight ( ) , m , true ) ; }
target:  Creates new bitmap by scaling given one