The status bar setting: in IOS7, the status bar is managed by default by the controller, such as the status bar style, the status bar is visible, the controller by overriding the following methods to control the status bar 1, set the status bar style-(Uistatusbarstyle) Preferredstatusbarstyle;
Where Uistatusbarstylelightcontent is a white style
2. Set the visibility of the status bar
-(BOOL) Prefersstatusbarhidden;
Second, the screen size:
An app will display full-screen images called default.png in the boot process 1> default.png: Non-retina-iphone screen,320x4802> [email protected] : Retina-iphone screen,640x9603> [email protected]:4inch retina-iphone screen,640x11364> default-portrait~ Ipad.png: Non-Retain-ipad vertical screen,768x10245> [email protected]:retain-ipad vertical screen,1536x20486> default-landscape~ Ipad.png: Non-retain-ipad horizontal screen,1024x7687> [email protected]:retain-ipad horizontal screen, 2048x1536
1-ios-Basic Knowledge