System UI Introduction

What's System UI?

Systyem UI refers to any element displayed on the screen that is not part of an app.

• Status Bar the status bar at the top.
• Navigator Bar the navigation bar at bottom
• Keyguard lock screen interface.
• Power UI power interface.
• Recents Screen recent tasks interface.
• VolumeUI volume adjustment dialog.
• Stack Divider split-screen function adjuster.
• PipUI picture-in-picture interface.
• Screenshot screenshot interface.
• RingtonePlayer ringtone player interface.

System UI Startup Process