Android裁剪Big地图的方法

bitmap = bitmap.createBitmap(bitmap,0,70,bitmap.getWidth(),bitmap.getHeight()/3);Matrix matrix = new Matrix();matrix.postScale(2.0f, 0.5f); bitmap = bitmap.createBitmap(bitmap,0,0,bitmap.getWidth()/2,bitmap.getHeight(),matrix,false);

用Matrix来改变裁剪图片的寬高