如何检测导航抽屉外的触摸事件

Question

我在我的应用程序中实现了Android Navigation抽屉.当用户触摸导航抽屉的外侧时,我可以打开/关闭抽屉.当用户触摸/单击导航抽屉侧时,您是否可以帮助我检测触摸/点击事件.我需要在那个事件中执行一些功能.请查看附带的屏幕截图. 任何帮助都会得到满足.

Answer 1

您必须在dispatchTouchEvent()方法中处理触摸位置.查看更多关于触摸层次这里

@Override    
public boolean dispatchTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_UP) {
        if (mDrawerLayout.isDrawerOpen(mRightDrawerListView)) {

            View content = findViewById(R.id.right_drawer);
            int[] contentLocation = new int[2];
            content.getLocationOnScreen(contentLocation);
            Rect rect = new Rect(contentLocation[0],
                contentLocation[1],
                contentLocation[0] + content.getWidth(),
                contentLocation[1] + content.getHeight());

            View toolbarView = findViewById(R.id.toolbar);
            int[] toolbarLocation = new int[2];
            toolbarView.getLocationOnScreen(toolbarLocation);
            Rect toolbarViewRect = new Rect(toolbarLocation[0],
                toolbarLocation[1],
                toolbarLocation[0] + toolbarView.getWidth(),
                toolbarLocation[1] + toolbarView.getHeight());


            if (!(rect.contains((int) event.getX(), (int) event.getY())) && !toolbarViewRect.contains((int) event.getX(), (int) event.getY())) {
                isOutSideClicked = true;
            } else {
                isOutSideClicked = false;
            }

        } else {
            return super.dispatchTouchEvent(event);
        }
    } else if (event.getAction() == MotionEvent.ACTION_DOWN && isOutSideClicked) {
        isOutSideClicked = false;
        return super.dispatchTouchEvent(event);
    } else if (event.getAction() == MotionEvent.ACTION_MOVE && isOutSideClicked) {
        return super.dispatchTouchEvent(event);
    }

    if (isOutSideClicked) {
        //make http call/db request
        Toast.makeText(this, "Hello..", Toast.LENGTH_SHORT).show();
    }
    return super.dispatchTouchEvent(event);
}

Answer 2

您可以使用onDrawerClosed

当您触摸外部屏幕时，onDrawerClosed将在导航抽屉关闭后呼叫

public void onDrawerClosed(View view) {
            super.onDrawerClosed(view);
            //do  here
}