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iOS

Posted by Arsene Lavaux
Arsene Lavaux
4,342 Points

Warning on self.imagePicker.delegate = self;

Hi: I am new to iOS dev, beginner developer overall.

Working on the Ribbit app. Got to the CameraViewController class to capture image and video.

I get the following warning: "Assigning to 'id<UINavigationController Delegate,UIImagePickerControllerDelegate>' from incompatible type 'CameraViewController 'const_strong'

on this line of code: self.imagePicker.delegate = self;

How do I make this warning go away?

Thanks! Arsene

5 Answers

Stone Preston
Stone Preston
42,016 Points

you need to conform to the UIImagePickerDelegate AND UINavigationControllerDelegate protocol by putting

<UIImagePickerControllerDelegate, UINavigationControllerDelegate>

after the name of your class in your .h file. Your class probably already conforms to several delegate protocols so you just need to add a comma and then add them to the list.

should be something like this

@interface TheNameOfYourClass : UIViewController <SomeDelegate, SomeOtherDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>
Arsene Lavaux
Arsene Lavaux
4,342 Points
Arsene Lavaux
Arsene Lavaux
4,342 Points

Hi Stone,

Thanks again for your help on this. Nonetheless, it looks like I already have this line in the header file:

import <UIKit/UIKit.h>

import <Parse/Parse.h>

@interface CameraViewController : UITableViewController <UIImagePickerControllerDelegate, UINavigationBarDelegate>

If you have any other ideas, feel free to share.

Thanks! Arsene

Stone Preston
Stone Preston
42,016 Points

looks like the code isnt showing up well. see the markdown cheatsheet as to how to format it for the forum.

Arsene Lavaux
Arsene Lavaux
4,342 Points
Arsene Lavaux
Arsene Lavaux
4,342 Points

May I ask where to find this cheatsheet?

Stone Preston
Stone Preston
42,016 Points

Whenever you go to type a new answer/comment, there is a link below the text box that says markdown cheatsheet

Arsene Lavaux
Arsene Lavaux
4,342 Points
Arsene Lavaux
Arsene Lavaux
4,342 Points

I see it now...

Let's give it a shot:

Objective C

#import <UIKit/UIKit.h>

#import <Parse/Parse.h>

@interface CameraViewController : UITableViewController <UIImagePickerControllerDelegate, UINavigationBarDelegate>

Stone Preston
Stone Preston
42,016 Points

you conformed to the UINavigationBar delegate protocol, not UINavigationController it needs to be

<UIImagePickerControllerDelegate, UINavigationControllerDelegate>

Arsene Lavaux
Arsene Lavaux
4,342 Points
Arsene Lavaux
Arsene Lavaux
4,342 Points

Hi Stone: Thank you very much on your great help.

:) Arsene