iOS Xcode-一组h / m文件中有多个自委托？

Question

I'm a huge noob, let's get that straight.

Currently I have in my header file...

@interface ViewController : UIViewController <UIWebViewDelegate>

...but can I have multiple delegates in the h/m files?

Can I add somehow?

The reason I ask this, is because of a warning I'm getting...

"Assigning to 'id' from incompatible type 'ViewController *const __strong'"

The app works fine, but I want to make sure the code is 100% proper.

(LONG STORY SHORT, I'm trying to add location tracking to my app, and I did, and it works fine, but it's giving me a warning because I'm 100% positive I didn't implement it properly, as I am trying to have multiple "XXX.delegate = self;" going on.

I want to somehow have...

self.locationManager.delegate = self;

AND

tapView.delegate = self;

in the same "-(void)viewDidLoad"...

Again, I expect people to literally say "Wtf are you smoking, you are doing this all wrong", because I am.. I need help. Please help. I've been googling all day.

Answer 1

That was a very long winded way of asking how to do this:

UIViewController <UIWebViewDelegate, UITextFieldDelegate, UITableViewDelegate>

There is no issue in doing this at all. You must specify the protocol to remove the warning

Answer 2

您可以确认多重播放代表，即

@interface ViewController : UIViewController <UIWebViewDelegate,SomeOtherDelegate>

Answer 3

Well, you can conform to multiple protocols in your .h file like that:

@interface ViewController : UIViewController <UIWebViewDelegate, UITableViewDelegate, UITableViewDataSource>

Ad you can also conform to more protocols in your .m file with a private class extension like that:

@interface ViewController () <UICollectionViewDataSource, UICollectionViewDelegate>

Don't mix them up

Answer 4

in .h file

@interface YourControllerClass : UIViewController <UIAlertViewDelegate, UIWebViewDelegate UITextFieldDelegate>

You can add Delegates when ever you need them. These Delegates have their methods defined. You can use their methods as you wish