Can't change custom class of UIButton to GIDSignInButton

问题

I'm trying to add Google sign in functionality to a custom button, and I'm following this tutorial. It's telling me to select the button, and set its class as GIDSignInButton, then add this code: @IBOutlet weak var signInButton: GIDSignInButton!.

However, it doesn't let me set the class to GIDSignInButton. When I type it in and press enter, the field just clears.

回答1:

The workaround is open the storyboard in text mode and put it directly. When you return to the interface builder it will show normally.

回答2:

You can create UIButton and then on its action method you can write this code for signing via google:

    GIDSignIn.sharedInstance().signIn()

It works for me, in this way you can customize UIButton according to your requirement and also perform signin by using google

回答3:

You should try assign GIDSignInButton not to the Button Object from the Object library but to the the View Object instead

It's work for me.

回答4:

That's because GIDSignInButton is a subclass of UIView, not UIButton. Add to the storyboard / nib a regular UIView and change it's class to GIDSignInButton instead.

From google doc:

Add a GIDSignInButton to your storyboard, XIB file, or instantiate it programmatically. To add the button to your storyboard or XIB file, add a View and set its custom class to GIDSignInButton.

回答5:

1. Open storyboard as source code.
2. Locate the button in the xml.
3. Set customClass="GIDSignInButton" as an attribute for the button tag.
4. Open storyboard as interface builder.

You can now link the button to the IBOutlet

回答6:

I had the same problem a few months ago,

Your code seems to be right

@IBOutlet weak var signInButton: GIDSignInButton!

But, the problem might be

• You haven’t added the Framework properly (Go to your project setting in the left side navigator, and click Build phases, add your framework and SHIFT + CMD + K)

• Or alternatively, go ahead and write the @IBOutlet in your swift file, then drag the button to assign it

• your last option is to close xcode, or maybe delete the derived data

Xcode itself has plenty of bugs, I am not sure if it’s your problem, it’s xcode’s

Hope this helps!

回答7:

If you use a UIView instead of a UIButton, you can assign the view a custom class of GIDSignInButton. From there you can connect the view to a button outlet and action as seen below.

@IBOutlet weak var googleLoginButton: GIDSignInButton!

  @IBAction func googleLoginButtonPressed(_ sender: Any) {
    GIDSignIn.sharedInstance()?.signIn()
}

回答8:

GIDSignInButton can be set by using a UIView or a UIButton.

If you are using GIDSignInButton as a UIButton

1. open the storyboard as source code
2. Find the button in resulting XML

3. Add the below code as an attribute for the button tag

   customClass="GIDSignInButton"

4.open storyboard again as Interface Builder, button class will be changed

If you are using GIDSignInButton as a UIView

1.copy paste the custom class as GIDSignInButton in Identity Inspector

The second one is the correct approach in my opinion

回答9:

Swift- 5

Open storyboard as source code.
Locate the button in the xml.
Set customClass="GIDSignInButton" as an attribute for the button tag.
Open storyboard as interface builder.

//MARK:- You will not find this with button XML Forcly Add this (customClass="GIDSignInButton")[![enter image description here][1]][1]

回答10:

The simple way to do is just make a button action and paste the following lines in it.

   @IBAction func gSignInAction(_ sender: Any) {
         GIDSignIn.sharedInstance()?.signIn()
    }

来源：https://stackoverflow.com/questions/47960149/cant-change-custom-class-of-uibutton-to-gidsigninbutton