图片置灰处理

1.//像素过滤矩阵      
2.public final static float[] BT_SELECTED = new float[] {         
3.    0.308f, 0.609f, 0.082f, 0, 0,       
4.    0.308f, 0.609f, 0.082f, 0, 0,  
5.    0.308f, 0.609f, 0.082f, 0, 0,  
6.    0, 0, 0, 1, 0 
7.};  
8. 
9.Drawable myImage = res.getDrawable(R.drawable.h114);  
10.myImage.mutate();  
11.myImage.clearColorFilter();  
12.myImage.setColorFilter(new ColorMatrixColorFilter(BT_SELECTED));