如何在暗模式下隐藏 Android 标题栏？

Question

I'm using Theme.MaterialComponents.DayNight.NoActionBar for my activity. My goal is to create an activity with no title bar and make the notification bar background as same as app background colour. Everything works fine under normal condition. But when I enable dark theme from the device settings, the title bar suddenly appears. How can I get rid of title bar for both dark light theme?

Answer 1

By default in the themes folder, there will be a normal one and night version change the parent theme in both to parent="Theme.MaterialComponents.DayNight.NoActionBar" like below

and the theme in manifest to style name in these two themes(same name) for me here android:theme="@style/Theme.Advice"> in manifest

Answer 2

Simply go to the Android Manifest file and change NoActionBar to NoTitleBar https://www.xspdf.com/resolution/20749671.html

Answer 3

you can do it programmatically as well:

this.requestWindowFeature(Window.FEATURE_NO_TITLE)
this.window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);

add this in you oncreate call and before setcontent view.

as:

 override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        this.requestWindowFeature(Window.FEATURE_NO_TITLE)
        this.window.addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.activity_main)
    }