plist里UIViewControllerBasedStatusBarAppearance设置为NO；

KEY : View controller-based status bar appearance Type : Boolean Value : NO

在appdelegate.m中添加


if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {
[application setStatusBarStyle:UIStatusBarStyleLightContent];
self.window.clipsToBounds =YES;
self.window.frame = CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height-20);
self.window.bounds = CGRectMake(0, 20, self.window.frame.size.width, self.window.frame.size.height);
}