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Android 一个view如何同时响应onTouch和onClick事件_android 点击事件和touch事件一起注册

android 点击事件和touch事件一起注册

一个view如何同时响应onTouch和onClick事件,这种情况很多,但是在网上搜了很长时间,大多数都是讲解如何区分onTouchEvent和onClick,onLongClick的调用顺序和流程.但是都没有讲到如何让onTouch事件和onClick事件共存.也就是说一个控件既能响应点击事件又能响应触摸事件.

首先声明,此博文参考的文章链接https://technicalsearch.iteye.com/blog/1972470   感谢前辈的智慧结晶.

值得说明的是解决的思路:在touch事件的onMove中判断手指的移动距离,当移动通过勾股定理算出<15px时,就把此事件当做是点击事件,当算出移动距离大于等于15px时就当做触摸事件处理

直接贴出代码,需要的朋友复制粘贴就可使用.

flSmall.setOnTouchListener(new View.OnTouchListener() {
        private int lastY;
        private int lastX;
        private float x1, x2;
        private float y1, y2;

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            int action = event.getAction();
            int screenWidth = getResources().getDisplayMetrics().widthPixels;
            switch (action) {
                case MotionEvent.ACTION_DOWN:
                    lastX = (int) event.getRawX();
                    lastY = (int) event.getRawY();
                    x1 = event.getRawX();//得到相对应屏幕左上角的坐标
                    y1 = event.getRawY();
                    break;
                case MotionEvent.ACTION_MOVE:
                    int dx = (int) event.getRawX() - lastX;
                    int dy = (int) event.getRawY() - lastY;

                    int left = v.getLeft() + dx;
                    int top = v.getTop() + dy;
                    int right = v.getRight() + dx;
                    int bottom = v.getBottom() + dy;
                    if (left < 0) {
                        left = 0;
                        right = left + v.getWidth();
                    }
                    if (right > screenWidth) {
                        right = screenWidth;
                        left = right - v.getWidth();
                    }
                    if (top < 0) {
                        top = 0;
                        bottom = top + v.getHeight();
                    }
                    if (bottom > getScreenHeight(MainActivity.this)) {
                        bottom = getScreenHeight(MainActivity.this);
                        top = bottom - v.getHeight();
                    }
                    v.layout(left, top, right, bottom);
                    lastX = (int) event.getRawX();
                    lastY = (int) event.getRawY();
                    break;
                case MotionEvent.ACTION_UP:
                    x2 = event.getRawX();
                    y2 = event.getRawY();
                    Log.i("i", x1 + ",,," + y1 + ",,," + x2 + ",,," + y2);
                    double distance = Math.sqrt(Math.abs(x1 - x2) * Math.abs(x1 - x2) + Math.abs(y1 - y2) * Math.abs(y1 - y2));//两点之间的距离
                    Log.d("i", "x1 - x2>>>>>>" + distance);
                    if (distance < 15) { // 距离较小,当作click事件来处理
                        Log.d(TAG, "onTouch: 点击事件");
                        return false;
                    } else {
                        Log.d(TAG, "onTouch: 滑动事件");
                        return true;
                    }
            }
            return false;
        }
    });
}

public int getScreenHeight(Activity activity) {
    if (activity.getRequestedOrientation() == ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) {
        return DisplayUtil.getScreenWidth(activity);
    } else {
        return DisplayUtil.getRealScreenHeight(activity);
    }
}
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