Android 平铺背景图片

Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pic);
//bitmap = Bitmap.createBitmap(100, 20, Config.ARGB_8888);
BitmapDrawable drawable = new BitmapDrawable(bitmap);
drawable.setTileModeXY(TileMode.REPEAT , TileMode.REPEAT );
drawable.setDither(true);
view.setBackgroundDrawable(drawable);

<bitmap xmlns:android="http://schemas.android.com/apk/res/android" 
	android:src="@drawable/img"
　　	android:tileMode="repeat" />

public static Bitmap createRepeater(int width, Bitmap src){
　　int count = (width + src.getWidth() - 1) / src.getWidth();
　　Bitmap bitmap = Bitmap.createBitmap(width, src.getHeight(), Config.ARGB_8888);
　　Canvas canvas = new Canvas(bitmap);

　　for(int idx = 0; idx < count; ++ idx){
　　	canvas.drawBitmap(src, idx * src.getWidth(), 0, null);
　　}

　　return bitmap;
}