Firebase signInWithEmailAndPassword会提供“com.google.firebase.auth not found” [英] Firebase signInWithEmailAndPassword gives "com.google.firebase.auth not found"

问题描述

我正在使用firebase作为我的android studio的回报。而且还有休闲的eatch和Firebase控制台提供的每一个步骤。我创建了3个Activity

1. MainActivity


2. LoginActivity RigisterActivity

我能够成功注册用户，但是当我尝试使用电子邮件和密码登录用户时，任务没有成功。下面是我的代码

Android监视器给出以下错误：

lockquote

W / DynamiteModule：找不到com.google.firebase.auth的本地模块描述符类。

$ b 登录活动

  private EditText mLoginEmailField; 
 private EditText mloginPassField; 
 
私人按钮mLoginbtn; 
私人按钮mNewAccountbtn; 
 
 private DatabaseReference mDatabaseRefrence; 
 
 
 
 
 
 private FirebaseAuth mAuth; 
 @Override 
 protected void onCreate（Bundled savedInstanceState）{
 super.onCreate（savedInstanceState）; 
 setContentView（R.layout.activity_login）; 
 
 
 
 mAuth = FirebaseAuth.getInstance（）; 
 mLoginEmailField =（EditText）findViewById（R.id.loginEmailField）; 
 mloginPassField =（EditText）findViewById（R.id.loginPasswordField）; 
 
 mLoginbtn =（Button）findViewById（R.id.loginBtn）; 
 mNewAccountbtn =（Button）findViewById（R.id.newAccountbtn）; 
 mDatabaseRefrence = FirebaseDatabase.getInstance（）。getReference（）。child（Users）; 
 
 
 mNewAccountbtn.setOnClickListener（new View.OnClickListener（）{
 @Override 
 public void onClick（View v）{
 Intent rigisterIntent = new Intent （LoginActivity.this，RegisterActivity.class）; 
 rigisterIntent.addFlags（Intent.FLAG_ACTIVITY_CLEAR_TOP）; 
 startActivity（rigisterIntent）; 
} 
}）; 
 
 
 mLoginbtn.setOnClickListener（new View.OnClickListener（）{
 @Override 
 public void onClick（View v）{
 
 CheckLogin （）; 
} 
}）; 
 
 
 private void CheckLogin（）{
 
 String email = mloginPassField.getText（）。toString（）。trim（）; 
 String pass = mloginPassField.getText（）。toString（）。trim（）; $！
 
 $ b if（！TextUtils.isEmpty（email）&！TextUtils.isEmpty（pass））{
 
 
 mAuth.signInWithEmailAndPassword email，pass）.addOnCompleteListener（this，new OnCompleteListener< AuthResult>（）{
 @Override $ b $ public void onComplete（@NonNull Task< AuthResult> task）{
 
 
 if（task.isSuccessful（））{
 
 CheackUserExsists（）; 
 
} else {
 
 Toast.makeText（LoginActivity.this， Erorr Login，Toast.LENGTH_LONG）.show（）; 
 
} 
} 
}）; 
 
 
 
 $ b $ private void CheackUserExsists（）{
 
 final String user_id = mAuth.getCurrentUser（）。的getuid（）; 
 mDatabaseRefrence.addValueEventListener（new ValueEventListener（）{
 @Override $ b $ public void onDataChange（DataSnapshot dataSnapshot）{$ b $ if（dataSnapshot.hasChild（user_id））{
 
 Intent MainIntent = new Intent（LoginActivity.this，MainActivity.class）; 
 MainIntent.addFlags（Intent.FLAG_ACTIVITY_CLEAR_TOP）; 
 startActivity（MainIntent）; 
} else 
 {
 
 Toast.makeText（LoginActivity.this，您需要设置您的账户..，Toast.LENGTH_LONG）.show（）; 
} 
} 
 
 @Override 
 public void onCancelled（DatabaseError databaseError）{
 
 $ b}）; 
 
 
 
 
  

解决方案修改您的 onComplete（）方法来记录登录失败的原因：

<$ （@NonNull Task< AuthResult>）{
@Override
public void onComplete（@NonNull Task< AuthResult> ;任务）{
if（task.isSuccessful（））{
CheackUserExsists（）;
} else {
Log.e（TAG，Sign-in Failed：+ （）.getMessage（））;
//或者如果你不使用Log：
// System.out.println（Sign-in Failed：+ task.getException ）.getMessage（））;
Toast.makeText（LoginActivity.this，Erorr Login，Toast.LENGTH_LONG）.show（）;
}
}
}）;

失败的可能原因是：

• 电子邮件地址格式不正确


• 通过电子邮件/密码登录被禁用


• 电子邮件不存在或已被删除


• 与电子邮件对应的用户帐户已被禁用


• 密码错误


$ b

有关

的警告讯息




未找到com.google.firebase.auth的本地模块描述符类。


不是重要的，不是登录失败的原因。




I am using firebase as baackend for my android studio. And also fallowed eatch and every step provided by firebase console. I created 3 Activity's

1. MainActivity
2. LoginActivity
3. RigisterActivity

I am able to register the user successfully but when i try to login user with email and password task is not getting successful. below is my code

Android monitor is giving the following error

W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.

Login Activity

  private EditText mLoginEmailField;
    private EditText mloginPassField;

    private Button mLoginbtn;
    private Button mNewAccountbtn;

    private DatabaseReference mDatabaseRefrence;





    private FirebaseAuth mAuth;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);



        mAuth = FirebaseAuth.getInstance();
        mLoginEmailField = (EditText) findViewById(R.id.loginEmailField);
        mloginPassField = (EditText) findViewById(R.id.loginPasswordField);

        mLoginbtn = (Button) findViewById(R.id.loginBtn);
        mNewAccountbtn = (Button) findViewById(R.id.newAccountbtn);
        mDatabaseRefrence = FirebaseDatabase.getInstance().getReference().child("Users");


        mNewAccountbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent rigisterIntent = new Intent(LoginActivity.this,RegisterActivity.class);
                rigisterIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(rigisterIntent);
            }
        });


        mLoginbtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                CheckLogin();
            }
        });
    }

    private void CheckLogin() {

        String email = mloginPassField.getText().toString().trim();
        String pass = mloginPassField.getText().toString().trim();


        if(!TextUtils.isEmpty(email) && !TextUtils.isEmpty(pass)){


            mAuth.signInWithEmailAndPassword(email,pass).addOnCompleteListener(this,new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {


                    if(task.isSuccessful()){

                        CheackUserExsists();

                    }else{

                        Toast.makeText(LoginActivity.this,"Erorr Login",Toast.LENGTH_LONG).show();

                    }
                }
            });

        }

    }

    private void CheackUserExsists() {

        final String user_id = mAuth.getCurrentUser().getUid();
        mDatabaseRefrence.addValueEventListener(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot dataSnapshot) {
                if(dataSnapshot.hasChild(user_id)){

                    Intent MainIntent = new Intent(LoginActivity.this,MainActivity.class);
                    MainIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                    startActivity(MainIntent);
                }else
                {

                    Toast.makeText(LoginActivity.this,"You need to setup your Account.. ",Toast.LENGTH_LONG).show();
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {

            }
        });
    }


                @

解决方案

Modify your onComplete() method to log the reason for sign-in failure:

    mAuth.signInWithEmailAndPassword(email,pass).addOnCompleteListener(this,new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if(task.isSuccessful()){
                CheackUserExsists();
            }else{
                Log.e(TAG, "Sign-in Failed: " + task.getException().getMessage());
                // Or if you don't use Log:
                // System.out.println("Sign-in Failed: " + task.getException().getMessage());
                Toast.makeText(LoginActivity.this,"Erorr Login",Toast.LENGTH_LONG).show();
            }
        }
    });

The possible reasons for failure are:

• The email address is malformed
• Sign-in by email/password is disabled
• The user account corresponding to the email does not exist or has been deleted
• The user account corresponding to the email has been disabled
• The password is wrong
• The user's token is not valid

The warning message about

Local module descriptor class for com.google.firebase.auth not found.

is not significant and is not the reason for the sign-in failure.

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