设置电池栏为白色
在Appdelegate里
[[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleLightContent animated:YES];
同时info.plist添加
View controller-based status bar appearance = NO
启动时隐藏电池栏
设置info.plist
Status bar is initially hidden = YES
但是隐藏了电池栏会导致电池栏不显示,所以需要在Appdelegate里添加
[[UIApplication sharedApplication]setStatusBarHidden:NO withAnimation:UIStatusBarAnimationNone];