ClickableImageView.java

package com.bczm.widgetcollections.ui.widget;

import android.content.Context;
import android.graphics.ColorMatrixColorFilter;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ImageView;

/**  有按压效果的ImageView
 * @author：Jorge on 2015/9/10 12:40
 */
public class ClickableImageView extends ImageView {
    public ClickableImageView(Context context) {
        super(context);
        this.setOnTouchListener(VIEW_TOUCH_DARK);
    }

    public ClickableImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.setOnTouchListener(VIEW_TOUCH_DARK);
    }

    public ClickableImageView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.setOnTouchListener(VIEW_TOUCH_DARK);
    }
    public OnTouchListener VIEW_TOUCH_DARK = new OnTouchListener() {
        // 变暗(三个-50，值越大则效果越深)
        public final float[] BT_SELECTED_DARK = new float[] { 1, 0, 0, 0, -50,
                0, 1, 0, 0, -50, 0, 0, 1, 0, -50, 0, 0, 0, 1, 0 };

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                ImageView iv = (ImageView) v;
                iv.setColorFilter(new ColorMatrixColorFilter(BT_SELECTED_DARK));
            } else if (event.getAction() == MotionEvent.ACTION_UP) {
                ImageView iv = (ImageView) v;
                iv.clearColorFilter();
                mPerformClick();
            } else if (event.getAction() == MotionEvent.ACTION_CANCEL) {
                ImageView iv = (ImageView) v;
                iv.clearColorFilter();
            }
            return true; // 如为false，执行ACTION_DOWN后不再往下执行
        }
    };

    private void mPerformClick() {
        ClickableImageView.this.performClick();
    }

}