Android 如何隐藏导航栏并且禁止其滑出

最近做项目，要求隐藏底部导航栏的同时禁止其上滑出现，平常导航栏的状态是隐藏并且是上滑出现的，而我们的项目就是要求其完全不出现，但是退出我们的app的它的上滑出现功能恢复正常

//为使底部栏能滑动隐藏,直接监听NestedScrollView的滑动事件向下滑则隐藏上滑则显示
mNestedScrollView.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
@Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int
oldScrollX, int oldScrollY) {

            //上滑 并且 正在显示底部栏
            if (scrollY - oldScrollY > 0 && isBottomShow) {
                isBottomShow = false;
                //将Y属性变为底部栏高度  (相当于隐藏了)
                mBottomView.animate().translationY(mBottomView.getHeight());
            } else if (scrollY - oldScrollY < 0 && !isBottomShow) {
                isBottomShow = true;
                mBottomView.animate().translationY(0);
            }
        }
    });

//上滑并且正在显示底部栏
if (scrollY - oldScrollY > 0 && isBottomShow) {
isBottomShow = false;
//将Y属性变为底部栏高度 (相当于隐藏了)
mBottomView.animate().translationY(mBottomView.getHeight());
} else if (scrollY - oldScrollY < 0 && !isBottomShow) {
isBottomShow = true
}
}
});

楼主你好，问下华为的虚拟键最左边的那个隐藏导航栏的键，怎么监听的，我用测试机测试，点击隐藏导航栏键，在上滑出这个导航栏，在点击返回按钮，闪退，我猜测的是点击那个隐藏键时，执行的是finsh();把页面销毁了，

 /** 
     * 隐藏虚拟按键，并且全屏 
     */  
    protected void hideBottomUIMenu() {  
        //隐藏虚拟按键，并且全屏  
        if (Build.VERSION.SDK_INT > 11 && Build.VERSION.SDK_INT < 19) { // lower api  
            View v = this.getWindow().getDecorView();  
            v.setSystemUiVisibility(View.GONE);  
        } else if (Build.VERSION.SDK_INT >= 19) {  
            //for new api versions.  
            View decorView = getWindow().getDecorView();  
            int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION  
                            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;  
            decorView.setSystemUiVisibility(uiOptions);  
        }  
    }

} else if (Build.VERSION.SDK_INT >= 19) {

//for new api versions.

View decorView = getWindow().getDecorView();

int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION

| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;

decorView.setSystemUiVisibility(uiOptions);

}

1.在manifest 文件中添加权限：

2.在java文件中添加StatusBarManager 实例
mStatusBarManager = (StatusBarManager) mContext.getSystemService(Context.STATUS_BAR_SERVICE);
3. 禁止下拉状态栏
mStatusBarManager.disable(StatusBarManager.DISABLE_EXPAND);
4. 解除禁止
mStatusBarManager.disable(StatusBarManager.DISABLE_NONE);

Android 隐藏or 显示底部导航栏
private void setNavigationBarVisibility(boolean visible) {
int flag = 0;
if (!visible) {
flag = View.SYSTEM_UI_FLAG_LAYOUT_STABLE
| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
| View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
}

    getWindow().getDecorView().setSystemUiVisibility(flag);
}

Note：
SYSTEM_UI_FLAG_HIDE_NAVIGATION： View has requested that the system navigation be temporarily hidden.

Android 如何 隐藏导航栏并且禁止其滑出

Android 如何隐藏导航栏并且禁止其滑出