Android 图片平铺效果bitmap

1)第一种利用系统提供的api实现 
view sourceprint?
 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); 

2)第二种我们使用xml来轻松实现 
 <bitmap xmlns:Android="http://schemas.android.com/apk/res/android"     

         android:src="../../@drawable/img" 

         Android:tileMode="repeat" /> 

3)第三种自己画出来 
view sourceprint?01 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;  

 }