[android]_[ImageView点击变暗]

    ImageView设置选中变暗效果。

public final float[] BT_SELECTED = new float[] {1,0,0,0,99,0,1,0,0,99,0,0,1,0,99,0,0,0,1,0};
     public final float[] BT_NOT_SELECTED = new float[]  {1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0};;
     public final static float[] BT_SELECTED1 = new float[] {         
            0.338f, 0.339f, 0.332f, 0, 0,       
            0.338f, 0.339f, 0.332f, 0, 0,  
            0.338f, 0.339f, 0.332f, 0, 0,  
            0, 0, 0, 1, 0  
        };  

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        ImageView  ib2;
        ib1 = (ImageView) findViewById(R.id.imageViewt);
        ib2 = (ImageView) findViewById(R.id.imageView2);
  
        ib1.setOnTouchListener(new  ImageView.OnTouchListener()
        {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_DOWN) {
                
                    ib1.setImageResource(R.drawable.icon1);
                    ib1.getDrawable().setColorFilter(
                                new ColorMatrixColorFilter(BT_SELECTED));
                
                ib1.setImageDrawable(ib1.getDrawable());
                } else if (event.getAction() == MotionEvent.ACTION_UP) {
                    ib1.getDrawable().clearColorFilter();
                
                    ib1.getDrawable().setColorFilter(new ColorMatrixColorFilter(BT_NOT_SELECTED));
                    ib1.setImageResource(R.drawable.icon2);
                }
                return false;
            }
        });
        
       
    }