setPreferredContentSize error in ios app

Question

Creating "IOS Project" in xcode 5 causes the following when launching for iPad simulator. The application works for iPhones configuration. I have set the target to be 5 and later and removed autolayout as its not compatible with ios/xcode 5.

I get the following error at launch of iPad app.

2013-08-29 08:53:57.688 IOS Project[350:c07] -[MasterViewController    setPreferredContentSize:]: unrecognized selector sent to instance 0x9e2cc20
2013-08-29 08:53:57.692 IOS Project[350:c07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MasterViewController setPreferredContentSize:]: unrecognized selector sent to instance 0x9e2cc20'
*** First throw call stack:
(0x1cd012 0x14c4e7e 0x2584bd 0x1bcbbc 0x1bc94e 0xbe7b 0x624d36 0x85054a 0x8506c3 0x40871e 0x4089a2 0x407876 0x418cb5 0x419beb 0x40b698 0x1f5fdf9 0x1f5fad0 0x142bf5 0x142962 0x173bb6 0x172f44 0x172e1b 0x40717a 0x408ffc 0x6d3d 0x6ca5)

Answer 1

In iOS7, UIViewController has a new property preferredContentSize. A project made for iOS7 has the following method:

- (void)awakeFromNib
{
    self.preferredContentSize = CGSizeMake(320.0, 480.0);
    [super awakeFromNib];
}

It therefore sends a setPreferredContentSize: message to your own controller, no matter if the property is implemented or not. To resolve the issue, you might want to avoid setting a property that does not exist:

- (void)awakeFromNib
{
    if ([[[UIDevice currentDevice] systemVersion] compare:@"7" options:NSNumericSearch] != NSOrderedAscending) {
        self.preferredContentSize = CGSizeMake(320.0, 480.0);
    }
    [super awakeFromNib];
}