显示图片一部分

// Set some constants 
private static final Bitmap SOURCE_BITMAP = BitmapFactory.decodeFile(....); // Get the source Bitmap using your favorite method :-) 
private static final int START_X = 10; 
private static final int START_Y = 15; 
private static final int WIDTH_PX = 100; 
private static final int HEIGHT_PX = 100; 
 
// Crop bitmap 
Bitmap newBitmap = Bitmap.createBitmap(SOURCE_BITMAP, START_X, START_Y, WIDTH_PX, HEIGHT_PX, null, false); 
 
// Assign new bitmap to ImageView 
ImageView image = (ImageView)findViewById(R.id.image_view); 
image.setImageBitmap(newBitmap);