Firebase signInWithEmailAndPassword 显示“未找到 com.google.firebase.auth" [英] Firebase signInWithEmailAndPassword gives "com.google.firebase.auth not found"
问题描述
我使用 firebase 作为我的 android 工作室的后端.并且还休耕了 eatch 和 firebase 控制台提供的每一步.我创建了 3 个活动
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
- 主要活动
- 登录活动
- 注册活动
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
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 显示器出现以下错误
Android monitor is giving the following error
W/DynamiteModule:未找到 com.google.firebase.auth 的本地模块描述符类.
W/DynamiteModule: Local module descriptor class for com.google.firebase.auth not found.
登录活动
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) {
}
});
}
@
推荐答案
修改您的 onComplete() 方法以记录登录失败的原因:
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();
}
}
});
失败的可能原因是:
- 电子邮件地址格式错误
- 已禁用通过电子邮件/密码登录
- 邮件对应的用户账号不存在或已被删除
- 与电子邮件对应的用户帐户已被禁用
- 密码错误
- 用户的令牌无效
关于
未找到 com.google.firebase.auth 的本地模块描述符类.
Local module descriptor class for com.google.firebase.auth not found.
不重要，也不是登录失败的原因.
is not significant and is not the reason for the sign-in failure.
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