Cannot show modal ViewController in iOS7

Question

I tried to show system defined viewcontrollers (MFMailComposeViewController, TWTweetComposeViewController,etc..) as a modal view.

But these viewcontrollers dosn\'t a

Answer 1

This Problem occurs in iPad air (64 bit) when app is not complied for 64 architecture. The problem I encountered was every UIAppearance selector which try to use UIOffsetMake/UIOffsetZero doesn't work properly! example

    [[UIBarButtonItem appearance] setBackButtonTitlePositionAdjustment:UIOffsetMake(1.0, 1.0) forBarMetrics:UIBarMetricsDefault];

or

    [[UITableViewCell appearance] setSeparatorInset:UIEdgeInsetsMake(0, 5, 0, 5)];

I think its a bug in Apple code and I tried few things but nothing works. Better if you can comment out places where you setInsets in UIAppearance selectors