React Native - Firebase 身份验证持久性不起作用 [英] React Native - Firebase auth persistence not working

问题描述

Firebase 身份验证不会持续登录用户，每次刷新或重新打开应用时，我都必须再次登录.

Firebase auth does not persist logged in user and everytime I refresh or reopen app I have to sign in again.

我尝试将持久性设置为本地，回调确实验证了它的设置，但持久性仍然无效

I have tried setting persistence to local and the callback does verify its set but the persistence is still no working

为了设置持久性，我正在使用...

For setting persistence I am using...

  //set auth persistence
  firebase.auth().setPersistence(firebase.auth.Auth.Persistence.LOCAL)
    .then(function() {
      console.log("successfully set the persistence");

    })
    .catch(function(error){
    console.log("failed to ser persistence: " + error.message)
  });

...为了登录，我正在使用此代码

. . . For signing in I am using this code

firebase.auth().signInWithEmailAndPassword(email, password)
      .then((user) =>{
        this.checkAccountStatus(user.uid, user.email);
      })
      .catch(function(error) {
      // Handle Errors here.

      var errorCode = error.code;
      var errorMessage = error.message;

      console.log(errorMessage)
      // ...
    });

这是我用来检查登录状态的代码...

And here is the code I am using to check login status...

if (firebase.auth().currentUser) {
        const currentUser = firebase.auth().currentUser;
        console.log("Signed in username" + currentUser.displayName);

        this.props.navigation.navigate('AppTab');
      }else{
        console.log("no user signed in");
        this.props.navigation.navigate('AuthTab');
      }

如果我做错了什么

推荐答案

您不需要设置持久性.默认情况下，Firebase 会为您处理.你只需要调用这个函数来检查用户是否登录:

You don't need to set persistence. Firebase handles it for you by default. You just need to call this function to check whether user is logged or not:

firebase.auth().onAuthStateChanged((user) => {
      if (user) {
        console.log('user is logged');
      }
});

只有在用户退出或清理应用数据时才会触发此操作.

This will not be triggered only if user has sign out or cleaned app data.

您可以在官方文档中找到更多详细信息:https://firebase.google.com/docs/auth/web/manage-users

You can find more details in the official docs: https://firebase.google.com/docs/auth/web/manage-users

希望有帮助.

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