iOS Dev via Xcode：UIView＆UITextView / UIPickerView - 无法分配代理？

Question

Up until updating Xcode last night, this was working great (though probably through sheer dumb luck!).

I'm getting an error now for my UITextViews, Fields and UIPickerViews when assigning the delegate:

[m_textField setDelegate:GAMESTATE->glView.self];

m_textField is defined as UITextField*. glView is defined as a UIView*. To keep things simple, I'm using just one UIView for the entire app (could also be a problem). I only need access to a couple of basic operations in the app to get simple text info from the user. Now I get the error:

Cannot initialize a parameter of type 'id<UITextFieldDelegate>' with an rvalue of type 'UIView*'

Like I said, I probably was doing something wrong in the first place, and it only worked through sheer, dumb luck! If it helps, I'm already subclassing my UIView as an Accelerometer Delegate, as such:

@interface GLView : UIView <UIAccelerometerDelegate>

Any help, suggestions or tips would be greatly appreciated. I've stumbled through some books this morning and brushed up on several Apple docs, but a quick work-around doesn't seem possible. I'm not adverse to refactoring the way I take input from the user, I could just use a hand getting there.

Answer 1

You should create, for example, NSObject that will delegate

1. for UITextView : UITextViewDelegate .
2. for UIPickerView : UIPickerViewDelegate

Your class declaration should look like this:

@interface MyViewDelegator:NSObject<UITextViewDelegate, UIPickerViewDelegate>

Then you should alloc+init it and set it as delegator of your text/picker views:

MyViewDelegator *delegator = [[MyViewDelegator alloc] init];
[m_textField setDelegate:delegator];

Don't forget to implement appropriate methods in MyViewDelegator that are not optional for protocols.