关于ios7和ios6的电池栏适配

1，在plist文件里设置

2代码里设置

[applicationsetStatusBarStyle:UIStatusBarStyleLightContent];

self.window.clipsToBounds=YES;

plist里View controller-based status bar appearance设置为NO；

在didFinishLaunchingWithOptions方法里面设置

[application setStatusBarStyle:UIStatusBarStyleLightContent];

self.window.clipsToBounds =YES;

self.window.frame =  CGRectMake(0,20,_window.frame.size.width,_window.frame.size.height - 20);//空出20px，将状态栏给单独显示出来