Question

I have been using CPLockController Class happily for quite a while. But since upgraded to Xcode 4.2, I have been getting the following warning:

'CPLockController' may not respond to 'initWithStyle:'

wherever this line is in the code:

CPLockController *lockController = [[CPLockController alloc]initWithStyle:(UITableViewStyle)CPLockControllerTypeAuth];

The implementation in CPLockController.m file is:

- (id)initWithStyle:(CPLockControllerStyle)theStyle {
    if(self == [super init]){
        self.style = theStyle;
        self.retry = NO;
        self.tempString = [NSMutableString string];
        self.hideCode = YES;
    }

    return self;
}

and type definition of CPLockControllerStyle:

typedef enum {
CPLockControllerTypeAuth,
CPLockControllerTypeSet
} CPLockControllerStyle;

I even created an issue in github, but no reply up till now!

Please guide… thanks!

Answer 1

That’s because the developer hasn’t declared -initWithStyle: in the class declaration. If you inspect CPLockController.h, -initWithStyle: is not there.

I’m not sure why the developer hasn’t done this (maybe he’s forgotten it, in which case you should file a bug), but you can easily add the declaration to CPLockController.h as follows:

@interface CPLockController : UIViewController <UITextFieldDelegate> {
    // Bunch of ivars
}

// Bunch of properties

- (void)setTitle:(NSString *)title;
- (id)initWithStyle:(CPLockControllerStyle)theStyle; // <-- add this line
@end