安卓射击onTouch事件多ImageViews [英] Android firing onTouch event for multiple ImageViews

问题描述

我有几个ImageViews，我想onTouch触发事件，为他们每个人，当我拖我的手指在多个图像。在present的onTouch事件只发射第一个ImageView的（或实际上在多个ImageViews但只有multitouching屏幕时）。伪code：

I have several ImageViews, and I want the onTouch event to fire for each of them when I drag my finger across multiple images. At present the onTouch event is only firing on the first ImageView (or actually on multiple ImageViews but only when multitouching the screen). Pseudo code:

            for(int i=0;i<5;i++){
              ImageView img=new ImageView(this);
              LinearLayout.LayoutParams layoutParams=new LinearLayout.LayoutParams(width,height);
              img.setImageResource(R.drawable.cell);
              img.setOnTouchListener(this);
              mainLayout.addView(img,layoutParams);
            }
            ...

            public boolean onTouch (View v, MotionEvent event){
              Log.d("MY_APP","View: " + v.getId());
              return false;
            }

难道我狂叫起来完全错了？

Am I barking up completely the wrong tree?

感谢您的帮助。

推荐答案

我认为你需要使用移动事件，而不是触摸事件，比较的getX和使用的getY您的视图的位置。

I think you need to use move event rather than touch event and compare getX and getY with the location of your views.

     @Override
    public boolean onTouchEvent(MotionEvent ev) {

        final int action = ev.getAction();

        switch (action) {

            // MotionEvent class constant signifying a finger-down event

            case MotionEvent.ACTION_DOWN: {
                break;
            }

            // MotionEvent class constant signifying a finger-drag event  

            case MotionEvent.ACTION_MOVE: {

                    X = ev.getX();
                    Y = ev.getY();
                    //compare here using a loop of your views
                    break;

            }

            // MotionEvent class constant signifying a finger-up event

            case MotionEvent.ACTION_UP:

                break;

        }
        return true;
    }

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