Android ListView图片蒙层点击监听

最新推荐文章于 2024-07-10 03:21:16 发布

原创最新推荐文章于 2024-07-10 03:21:16 发布 · 539 阅读

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文章标签：

#android #listview #imageview

实现点击图片增加蒙层

增加蒙层

drawable.mutate().setColorFilter(Color.GRAY,
                                PorterDuff.Mode.MULTIPLY);

当ImageView使用在ListView中，为避免滑动过程中touch事件执行，造成图片蒙层闪现的情况，需要增加点击延时，实现如下：

继承ImageView，重写onTouch事件

public class CustomImageView extends ImageView {
    public CustomImageView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public CustomImageView(Context context) {
        super(context);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        boolean bool = super.onTouchEvent(event);
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                if (mPendingCheckForTap == null) {
                    mPendingCheckForTap = new CheckForTap();
                }
                postDelayed(mPendingCheckForTap, ViewConfiguration.getTapTimeout());
                break;
            case MotionEvent.ACTION_MOVE:
                removeTapCallback();
                break;
            case MotionEvent.ACTION_CANCEL:
            case MotionEvent.ACTION_UP:
                removeTapCallback();
                if (mUnsetPressedState == null) {
                    mUnsetPressedState = new UnsetPressedState();
                }
                if (isPressed()) {
                    Drawable drawable=getDrawable();
                    if(drawable!=null) {
                        drawable.mutate().setColorFilter(Color.GRAY,
                                PorterDuff.Mode.MULTIPLY);
                    }
                    postDelayed(mUnsetPressedState, ViewConfiguration.getPressedStateDuration());
                } else {
                    mUnsetPressedState.run();
                }
            default:break;
        }
        return bool;
    }
}