设置ImageButton按下后的效果

ImageButton imgb = (ImageButton) findViewById(R.id.ImageButton01);
		imgb.setOnClickListener(new Button.OnClickListener() {
		public void onClick(View v) {
		 TextView txt = (TextView) findViewById(R.id.TextView01);
		 txt.setText("图片按钮被单击了");
		 v.setBackgroundResource(R.drawable.img_10_10);
		 }
		 });

		imgb.setOnTouchListener(new Button.OnTouchListener() {

			//按下时进行图片颜色的过滤处理
			public boolean onTouch(View v, MotionEvent event) {
				if (event.getAction() == MotionEvent.ACTION_DOWN) {
					v.getBackground().setColorFilter(
							new ColorMatrixColorFilter(BT_SELECTED));
					v.setBackgroundDrawable(v.getBackground());
				} else if (event.getAction() == MotionEvent.ACTION_UP) {
					v.getBackground().setColorFilter(
							new ColorMatrixColorFilter(BT_NOT_SELECTED));
					v.setBackgroundDrawable(v.getBackground());
				}
				return false;
			}

		});

	}

	/**
	 * 按下这个按钮进行的颜色过滤
	 */
	public final static float[] BT_SELECTED = new float[] { 2, 0, 0, 0, 2, 0,
			2, 0, 0, 2, 0, 0, 2, 0, 2, 0, 0, 0, 1, 0 };

	/**
	 * 按钮恢复原状的颜色过滤
	 */
	public final static 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 };