Statusbar出现透明及界面下方出现空白

步骤1、在ViewController中 loadView  

#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000

if ( IOS7_OR_LATER )

{

self.edgesForExtendedLayout = UIRectEdgeNone;

self.extendedLayoutIncludesOpaqueBars = NO;

self.modalPresentationCapturesStatusBarAppearance = NO;

}

#endif  #if __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000

步骤2 在AppBoard_iPhone.m中加入  

- (UIStatusBarStyle)preferredStatusBarStyle {

return UIStatusBarStyleLightContent;

}

- (BOOL)prefersStatusBarHidden {

return YES;

}