升级xcode5 ios7 后状态栏被导航栏遮挡的解决方案

第一步Info.plist中加入View controller-based status bar appearance  值设置为NO

第二步在AppDelegate 中加入以下代码

    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {

        self.window.frame =  CGRectMake(0,20,self.window.frame.size.width,self.window.frame.size.height-20);

        UIApplication *myApp = [UIApplication sharedApplication];

        [myApp setStatusBarStyle: UIStatusBarStyleLightContent];

    }