如何通过触摸外部抽屉来防止关闭导航抽屉 [英] How to prevent closing Navigation drawer by touch outside the drawer

问题描述

我有一个带有导航抽屉的活动.如果用户设备是桌子，方向是横向-我不需要通过单击抽屉中的项目来关闭抽屉:

I have an Activity with Navigation Drawer. if user device is table and orientation is landscape - I not need to close drawer by click on item in drawer:

if (!isTablet || context.getResources().getConfiguration().orientation==1) {
    mDrawerLayout.closeDrawer(Gravity.START);
}

有效.但是，如果用户在打开的抽屉外面触摸屏幕-抽屉关闭. 不适合使用DrawerLayout.LOCK_MODE_LOCKED_OPEN，因为我需要保存抽屉滑动功能. 如何在用户触摸抽屉外部时防止其关闭导航抽屉?

It work. But if user touch the screen outside opened drawer - drawer closing. Using DrawerLayout.LOCK_MODE_LOCKED_OPEN is unsuitable bacause I need to save drawer sliding functions. How to prevent closing Navigation drawer when user touch outside the drawer?

请帮助.

推荐答案

基于我在在此处写的另一个答案.我已经修改了代码以适合您的问题.请检查.

Based on the other answer which I wrote here. I have modified the code to suit your question. Please check.

在此处

dispatchTouchEvent()方法应在Activity类中覆盖

@Override    
public boolean dispatchTouchEvent(MotionEvent event) {
    if (event.getAction() == MotionEvent.ACTION_UP) {
        if (isDrawerOpen()) { //Your code here to check whether drawer is open or not. 

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

            if (!(rect.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) {
        return true; //restrict the touch event here
    }else{
        return super.dispatchTouchEvent(event);
    }
}

注意:如问题注释中所述，这与

Note: As mentioned in the question comments, this is against of Android guidelines. So try to avoid it until unless it is mandatory.

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