multiple delegates give warning

Question

This is not a serious bug I'm just wondering because XCode is throwing me a warning when I'm trying to do 2 delegates from one view. my view interface declaration looks like this

@interface C4WorkSpace : C4CanvasController<UITextViewDelegate, UIImagePickerControllerDelegate>

and then I have a UIImagePicker that goes like this

UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;

and a UITextViewDelegate like this

userNameField = [[UITextView alloc] initWithFrame:textViewFrame];
userNameField.delegate = self;

I'm rather new to delegates and basically all that code is made up by using code from somebody else so I'm not sure I completely understand the concepts of delegates.

The warning I get is: "Assigning to 'id' from incompatible type 'C4Workspace *const__strong'"

Is it that I need to delegate to something else then self? If so to what? Or is it a C4issue?

So which line exactly is giving you the warning? Your code seems fine, by the way. — TotoroTotoro, Jan 14 '14 at 17:37
Try this solution: http://stackoverflow.com/questions/4727895/iphone-uiimagepickercontrollerdelegate-inheritance — TotoroTotoro, Jan 14 '14 at 17:40
If you search for "UIImagePickerController delegate warning", you'll see a ton of results, and the answer seems to be the same: make your class implement `UINavigationControllerDelegate`. Have you tried it? — TotoroTotoro, Jan 14 '14 at 17:42
The code you show looks fine, there must be a problem in the code you are not showing. — progrmr, Jan 14 '14 at 17:50
@BlackRider's answer is good, seems like you need to adopt both protocols. — C4 - Travis, Jan 15 '14 at 06:25

score 1 · Answer 1 · answered Jan 15 '14 at 09:17

so the magic is just adding UINavigationControllerDelegate to the interface declaration. It looks like this then

@interface C4WorkSpace : C4CanvasController<UITextViewDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>

thanks everyone for the help in the comments!

multiple delegates give warning

1 Answers1