我在我的应用程序上添加了带有 firebase 身份验证的 facebook 登录，但登录身份验证仅适用于 Android API 24。

当我尝试使用较低级别的 API 时，屏幕卡住并且应用程序停止工作。

它太高了，大多数用户都较低API level .

事实上，我打算发布适用于较低 API 级别的应用程序。

我使用的代码如下。

public class ConfigurationActivity extends Activity {

    Button b_v_mm,b_som;
    LoginButton loginButton;
    CallbackManager callbackManager;

    // [START declare_auth]
    private FirebaseAuth mAuth;
    // [END declare_auth]


    private void handleFacebookAccessToken(AccessToken token) {
        Log.d("FireBase", "handleFacebookAccessToken:" + token);

        AuthCredential credential = FacebookAuthProvider.getCredential(token.getToken());
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d("FireBase", "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            //updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w("FireBase", "signInWithCredential:failure", task.getException());
                            //Toast.makeText(FacebookLoginActivity.this, "Authentication failed.",
                             //       Toast.LENGTH_SHORT).show();
                            //updateUI(null);
                        }

                        // ...
                    }
                });
    }

    // [START on_start_check_user]
    @Override
    public void onStart() {
        super.onStart();
        Log.d("FireBase", "onStart");
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        //updateUI(currentUser);
    }
    // [END on_start_check_user]

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.d("LoginFace", "LoginFace - onActivityResult");
        super.onActivityResult(requestCode, resultCode, data);
        Log.d("LoginFace", "LoginFace - onActivityResult");
        callbackManager.onActivityResult(requestCode, resultCode, data);
        Log.d("LoginFace", "LoginFace - After callbackManager");
/*
        if (AccessToken.getCurrentAccessToken() != null) {
            Log.d("AjudaFace", "AjudaFace - logout");
            LoginManager.getInstance().logOut();
        }*/
    }

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_configuration);

        //Botãp da barra de ferramentas que faz retornar para o Menu principal.
        b_v_mm = (Button) findViewById(com.cerveja.qof.pedro.qof_cerveja.R.id.b_v_mm);
        b_v_mm.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(ConfigurationActivity.this, MainMenu.class);
                startActivity(intent);
                finish();
            }
        });

        b_som = (Button) findViewById(com.cerveja.qof.pedro.qof_cerveja.R.id.b_som);
        //Altera opções de som.
        b_som.setOnClickListener(new View.OnClickListener() {
                                      @Override
                                      public void onClick(View v) {

                                          //Carrega opções de texto do botão, armazenadas no repositório de strings
                                          String s_som_on = getString(R.string.b_som_on);
                                          String s_som_off = getString(R.string.b_som_off);

                                          //Caso o som esteja desligado, o desliga.
                                          if(b_som.getText().equals(s_som_on)) {
                                              b_som.setText(s_som_off);
                                          }
                                          else //Caso o som esteja desligado, o liga.
                                              if (b_som.getText().equals(s_som_off)){
                                                  b_som.setText(s_som_on);
                                              }
                                      }
                                  }
        );

        callbackManager = CallbackManager.Factory.create();


// ...
// Initialize Firebase Auth
        mAuth = FirebaseAuth.getInstance();

        loginButton = (LoginButton) findViewById(R.id.login_button);
        loginButton.setReadPermissions("email","public_profile");
        Log.d("LoginFace", "LoginFace - Button Created");


        // Callback registration
        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                handleFacebookAccessToken(loginResult.getAccessToken());
                Log.d("LoginFace", "LoginFace - Sucesso");
                Toast.makeText(getApplicationContext(),
                        "LOGIN REALIZADO", Toast.LENGTH_LONG).show();
            }

            @Override
            public void onCancel() {
                Log.d("LoginFace", "LoginFace - Cancelado");
                Toast.makeText(getApplicationContext(),
                        "LOGIN CANCELADO", Toast.LENGTH_LONG).show();
            }


            @Override
            public void onError(FacebookException exception) {
                Log.d("LoginFace", "LoginFace - Erro");
                Toast.makeText(getApplicationContext(),
                        "LOGIN Erro", Toast.LENGTH_LONG).show();
                Log.d("LoginFace", exception.toString());
            }
        });


    }
}

MyApplication Activity 中使用的对象

import android.app.Application;
import android.content.Context;

**项目中使用的所有对象都在上面列出

API 23 日志:

12-02 17:22:26.900 2668-2745/? D/EGL_emulation: eglMakeCurrent: 0xaa9ba4e0: ver 2 0 (tinfo 0xac3853a0)

                                            [ 12-02 17:22:26.949  2668: 3361 D/         ]
                                            HostConnection::get() New Host Connection established 0xa19c5800, tid 3361


                                            [ 12-02 17:22:26.950  2668: 3361 W/         ]
                                            Unrecognized GLES max version string in extensions: ANDROID_EMU_CHECKSUM_HELPER_v1

ANDROID_EMU_dma_v1 12-02 17:22:26.977 2668-3361/? D/EGL_emulation: eglCreateContext: 0xaa9ba900: maj 2 min 0 rcv 2 12-02 17:22:26.978 2668-3361/? D/EGL_emulation: eglMakeCurrent: 0xaa9ba900: ver 2 0 (tinfo 0xa23bf7e0) 12-02 17:22:26.980 2668-3361/? E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008cdf 12-02 17:22:26.980 2668-3361/? E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008824 12-02 17:22:26.980 2668-3361/? E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008cdf 12-02 17:22:26.980 2668-3361/? E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008824 12-02 17:22:27.135 2668-3361/? D/EGL_emulation: eglCreateContext: 0xaa9ba9c0: maj 2 min 0 rcv 2 12-02 17:22:27.136 2668-3361/? D/EGL_emulation: eglMakeCurrent: 0xaa9ba9c0: ver 2 0 (tinfo 0xa23bf7e0) 12-02 17:22:29.740 2668-2668/com.cerveja.qof.pedro.qof_cerveja W/BindingManager: Cannot call determinedVisibility() - never saw a connection for the pid: 2668 12-02 17:22:32.649 2668-2745/com.cerveja.qof.pedro.qof_cerveja D/EGL_emulation: eglMakeCurrent: 0xaa9ba4e0: ver 2 0 (tinfo 0xac3853a0) 12-02 17:22:32.650 2668-2745/com.cerveja.qof.pedro.qof_cerveja E/Surface: getSlotFromBufferLocked: unknown buffer: 0xb40bdc00 12-02 17:22:32.676 2668-3361/com.cerveja.qof.pedro.qof_cerveja D/EGL_emulation: eglMakeCurrent: 0xaa9ba900: ver 2 0 (tinfo 0xa23bf7e0) 12-02 17:22:32.687 2668-3361/com.cerveja.qof.pedro.qof_cerveja D/EGL_emulation: eglMakeCurrent: 0xaa9ba9c0: ver 2 0 (tinfo 0xa23bf7e0) 12-02 17:22:32.704 2668-2745/com.cerveja.qof.pedro.qof_cerveja D/EGL_emulation: eglMakeCurrent: 0xaa9ba4e0: ver 2 0 (tinfo 0xac3853a0) 12-02 17:22:32.716 2668-2745/com.cerveja.qof.pedro.qof_cerveja E/eglCodecCommon: glUtilsParamSize: unknow param 0x00008cdf 12-02 17:22:32.767 2668-3361/com.cerveja.qof.pedro.qof_cerveja D/EGL_emulation: eglMakeCurrent: 0xaa9ba900: ver 2 0 (tinfo 0xa23bf7e0) 12-02 17:27:05.115 2668-2711/com.cerveja.qof.pedro.qof_cerveja W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.

这最后一个可能是错误原因:

12-02 17:27:05.115 2668-2711/com.cerveja.qof.pedro.qof_cerveja W/DynamiteModule:找不到 com.google.firebase.auth 的本地模块描述符类。

如何降低所需的 API 级别？

最佳答案

尝试将您的客户端与您的 Firebase 应用程序重新同步，然后再次添加 .json 文件。

在 android studio 2.3 中，只需单击工具>firebase，然后在助手中检查您的应用是否已连接。

还要确保 facebook 开发者帐户和 firebase 控制台中的包名称都是正确的。

Use the latest Firebase library

你能检查一下你的 Google Play 服务版本吗？

Android 设备应具有 Google Play 服务 9.0.0 或更高版本

此问题的原因之一可能是您在 Firebase 中的登录方法 > 身份验证仪表板可能已被禁用

关于android - Facebook 登录仅适用于 API 24 - 找不到 com.google.firebase.auth 的本地模块描述符类。错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47579107/