java - Firebase 身份验证要求更新 Google Play 服务

Question

我想创建一个 EmailPassword 身份验证页面，因为它可以从下面的代码中推断出来:

package parsa.lop.sibeh;

import android.content.Intent;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;

public class MainActivity extends AppCompatActivity {
    private FirebaseAuth mAuth;
    private Button mLogin;
    private EditText mEmail;
    private EditText mPassword;
    private GoogleApiClient mGoogleApiClient;

    private FirebaseAuth.AuthStateListener mAuthListener;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mAuth = FirebaseAuth.getInstance();
        mLogin = findViewById(R.id.login);
        mEmail = findViewById(R.id.email);
        mPassword = findViewById(R.id.password);
        mAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                if(firebaseAuth.getCurrentUser() != null){
                    startActivity(new Intent(MainActivity.this, StartActivity.class));
                }
            }
        };
    }

    @Override
    protected void onStart() {
        super.onStart();
        mAuth.addAuthStateListener(mAuthListener);
    }

    public void loginButton(View view){

        String email = mEmail.getText().toString();
        String pass = mPassword.getText().toString();
        mAuth.signInWithEmailAndPassword(email, pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                if(task.isSuccessful()){
                    Toast.makeText(MainActivity.this, "Signed In", Toast.LENGTH_LONG).show();
                }
            }
        });


    }
}

我的应用程序build.gradle包含

implementation 'com.google.firebase:firebase-core:16.0.6'
implementation 'com.google.firebase:firebase-auth:16.1.0'

我的项目build.gradle包含

classpath 'com.google.gms:google-services:4.2.0' 

我已在 firebase 中创建了一个帐户，并在我的应用文件夹中下载了 google-services.json。 所以我没有收到任何错误，除了当我通过 loginButton() 函数单击按钮时，我得到 从模拟器更新 Google Play 服务

Answer 1

Firebase、Google map 等所有 Google 服务均适用于 Google Play 服务，如果您尚未更新这些服务，则这些服务中的任何一项都将在您的设备中运行，您需要更新它们并确保它们是最新的。

为了避免用户卡在该窗口，您可以添加一个检查来验证 Google Play 服务版本是否是最新的，如果不是，您可以重定向用户进行更新

final String appPackageName = "con.google.android.gms"; // package name of the app

    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext());
    if(status == ConnectionResult.SUCCESS) {
        //alarm to go and install Google Play Services
    }else if(status == ConnectionResult.SERVICE_VERSION_UPDATE_REQUIRED){
       Toast.makeText(context,"please udpate your google play service",Toast.LENGTH_SHORT).show
   try {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + appPackageName)));
     } catch (android.content.ActivityNotFoundException anfe) {
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + appPackageName)));
}
    }

在您的 else 语句中，我们将重定向用户以将其安装在此位置

https://play.google.com/store/apps/details?id=com.google.android.gms

要从模拟器更新您的 Google Play 服务，请参阅此答案 updating Google play services in Emulator