Google登录 - Flutter

1 回答

• 1

  是的你是对的，它需要一些if else声明 . 我认为你正在寻找 auth.currentUser() 函数来检查用户登录和点唱的状态 .

  以下代码检查用户登录状态，如果用户已登录，则放置用户 Profiles 照片 .

  FirebaseAuth auth; //firebase auth
    FirebaseUser user; // firebase user
  
    var imageUrl = "assets/image.png";  //you can use a image 
    //as a default image that would be replaced later with the profile photo
  
  
    Widget userProfilePhoto()
    {
      return Center(
          child: Container(
            height: 100.0,
            width: 100.0,
            decoration: BoxDecoration(
              shape: BoxShape.circle,
              image: DecorationImage(
                fit : BoxFit.fill,
                image: NetworkImage(userurl)
              )
            ), 
          )
        ),
    }
  
  
    void checkUser()
    {
      //Check if the user is signned in or not with the currentUser() function
      if(auth.currentUser() != null)
      {
        setState((){
          userImageUrl = user.photoUrl;
          //if the user is signned in then set the url to be the image url
        });
      }
      else
      {
        //call signin method to make the user signin
        signIn();
      }
    }
  

  回复于 2024-04-20T16:53:09+08:00