The Android system comes with the style of android:theme

android:theme=" @android :style/ Theme.Dialog ": Activity is displayed in dialog mode

android: theme = "@ android: style/Theme NoTitleBar" : does not display the application title bar

android: theme = "@ android: style/Theme. NoTitleBar. Fullscreen" : does not display the application title bar, and full screen

android:theme="Theme.Light ": background is white

android:theme=" Theme.Light.NoTitleBar ": white background has no title bar

android: theme = "Theme. Light. NoTitleBar. Fullscreen" : a white background, with no title bar, full screen

android:theme="Theme.Black" : black background

android:theme=" Theme.Black.NoTitleBar ": black background has no title bar

android: theme = "Theme. Black. NoTitleBar. Fullscreen" : black background, no title bar, full screen

android:theme=" Theme.Wallpaper ": use the system desktop as the application background

android:theme=" Theme.Wallpaper.NoTitleBar ": use the system desktop as the application background and no title bar

android: theme = "Theme. Wallpaper. NoTitleBar. Fullscreen" : use the desktop background for the application, no title bar, full screen

android:theme="Theme.Translucent: transparent background

android:theme=" Theme.Translucent.NoTitleBar ": transparent background with no title

android: theme = "Theme. Translucent. NoTitleBar. Fullscreen" : transparent background and no title, full screen

android:theme=" Theme. Panel ": panel style display

android:theme=" Theme.Light.Panel ": flat-style display