Question

我正在制作自定义的ViewFlipper，其中我通过覆盖OnTouch()鳍状肢翻转页面。但是我的问题是我无法在儿童身上获得加入鳍状肢的触摸事件。并且仅在ViewFlipper空白部分获得直接触摸事件。因此，如何通过启用的子点击事件在所有页面上获取触摸事件。这是我的自定义ViewFlipper代码

谢谢。

public class MyViewFlipper extends ViewFlipper {

    static final String logTag = "ViewFlipper";
    static final int MIN_DISTANCE = 30;
    private float downX, downY, upX, upY;
    Animation slideLeftIn;
    Animation slideLeftOut;
    Animation slideRightIn;
    Animation slideRightOut;
    Context context;
    ViewFlipper viewFlipper;

    public MyViewFlipper(Context context) {
        super(context);
        viewFlipper=this;
         this.context=context;
    }

    public MyViewFlipper(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.context=context;
         viewFlipper=this;
         slideLeftIn = AnimationUtils.loadAnimation(context, R.anim.slide_left_in);
         slideLeftOut = AnimationUtils.loadAnimation(context, R.anim.slide_left_out);
         slideRightIn = AnimationUtils.loadAnimation(context, R.anim.slide_right_in);
         slideRightOut = AnimationUtils.loadAnimation(context, R.anim.slide_right_out);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
         switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN: {
                downX = event.getX();
                downY = event.getY();
                return true;
            }
            case MotionEvent.ACTION_UP: {
                upX = event.getX();
                upY = event.getY();

                float deltaX = downX - upX;
                float deltaY = downY - upY;

                // swipe horizontal?
                if (Math.abs(deltaX) > MIN_DISTANCE) {
                    // left or right
                    if (deltaX < 0) {
                        this.onLeftToRightSwipe();
                        return true;
                    }
                    if (deltaX > 0) {
                        this.onRightToLeftSwipe();
                        return true;
                    }
                } else {
                    if(Math.abs(deltaX)<15){
                        onClickEvent();
                    }
                    //Log.i(logTag, "Swipe was only " + Math.abs(deltaX)
                    //        + " long, need at least " + MIN_DISTANCE);
                }
                // swipe vertical?
                if (Math.abs(deltaY) > MIN_DISTANCE) {
                    // top or down
                    if (deltaY < 0) {
                        this.onTopToBottomSwipe();
                        return true;
                    }
                    if (deltaY > 0) {
                        this.onBottomToTopSwipe();
                        return true;
                    }
                } else {
                    Log.i(logTag, "Swipe was only " + Math.abs(deltaX)
                            + " long, need at least " + MIN_DISTANCE);
                }

                return true;
            }
            }
            return false;

    }

     public void onRightToLeftSwipe() {

        viewFlipper.setInAnimation(slideLeftIn);
        viewFlipper.setOutAnimation(slideLeftOut);
        viewFlipper.showNext();
    }

    public void onLeftToRightSwipe() {

        viewFlipper.setInAnimation(slideRightIn);
        viewFlipper.setOutAnimation(slideRightOut); 
        viewFlipper.showPrevious();
    }

    public void onTopToBottomSwipe() {
        Log.i(logTag, "onTopToBottomSwipe!");
        // activity.doSomething();
    }

    public void onBottomToTopSwipe() {
        Log.i(logTag, "onBottomToTopSwipe!");
        // activity.doSomething();
    }

    public void onClickEvent(){
        Toast.makeText(context, "Click",Toast.LENGTH_SHORT);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        return true;
    }



}

Answer 1

删除

onInterceptTouchEvent()

在自定义viewFlipper中，您将返回true，这意味着，儿童不会获得触摸事件。

翻转视图翻板时不会出现点击事件

1 个答案: