如何在我的Android应用程序的导航栏中添加按钮？

Question

In my application (only for my application), I want to add a button to the navigation system bar

How I can do that in my code?

Answer 1

You cannot do anything there. Not to mention some devices will not show this bar at all if they got hardware buttons.

Answer 2

You can't.

Maybe try to add a fragment that will be exactly above it.

Some phones don't even have that buttons on screen.

Answer 3

首先检查手机或选项卡上是否有软按钮，然后通过编程使全屏显示，然后在底部创建像标签栏一样的自定义按钮栏，然后按自己喜欢的方式放置按钮，如果您没有其他想法的话

getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);