我正在使用Firebase Authentification进行应用程序，但我遇到了问题。
Firebase FirebaseAuth.getInstance().createUserWithEmailAndPassword(email, password)方法会自动在用户中签名。但我不想要这个，因为我需要在登录前进行电子邮件验证。
所以当我完成注册流程时，我实施了注销。你可以在下面找到我的代码。
我的问题是，当我从SignUpActivity返回LoginActivity时，来自LoginActivity的FirebaseAuthStateListener会检测到用户并转到MainActivity，这是我不想要的。
有没有人遇到同样的问题？
我目前正在用一面旗帜来解决这个问题，但我根本不喜欢它。在我退出之后，我不明白为什么FirebaseAuth会返回非空用户。
提前致谢，
阿德里安。
LoginActivity.java
public class LoginActivity extends AppCompatActivity {
// Firebase stuff
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
// Facebook stuff
private CallbackManager mCallbackManager;
private Button mLoginButton;
// Views stuff
private LoginButton mLoginFbButton;
private EditText mEmailTextField;
private EditText mPasswordTextField;
private ProgressDialog mProgressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
viewsSetup();
firebaseSetUp();
}
@Override
public void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
}
@Override
public void onPause() {
super.onPause();
if(mAuthListener != null)mAuth.removeAuthStateListener(mAuthListener);
}
@Override
public void onResume() {
super.onResume();
mAuth.addAuthStateListener(mAuthListener);
}
@Override
public void onStop() {
super.onStop();
if (mAuthListener != null) {
mAuth.removeAuthStateListener(mAuthListener);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_SIGNUP) {
if (resultCode == RESULT_OK) {
Toast.makeText(getBaseContext(), getString(R.string.you_can_login), Toast.LENGTH_LONG).show();
}
}
onResume();
super.onActivityResult(requestCode, resultCode, data);
mCallbackManager.onActivityResult(requestCode, resultCode, data);
}
private void firebaseSetUp() {
mAuth = FirebaseAuth.getInstance();
// Will be notified on login success
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
FirebaseUser user = firebaseAuth.getCurrentUser();
if (user != null && !mFromSignup) {
// Login success is handled here and should not be handled anywhere else.
mLoginButton.setEnabled(true);
// Stop the progress dialog
mProgressDialog.dismiss();
toMainActivity();
}
}
};
}
private void signIn(AuthCredential credential) {
// pops up the progress dialog
mProgressDialog = ProgressDialog.show(this, getString(R.string.signing_in), null, true);
// Will be notified when sign in request finish
mAuth.signInWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
// Do not handle authentification success here, on complete
// this will notify the Authentification Listener
if (!task.isSuccessful()) {
Log.w(TAG, "signInWithCredential", task.getException());
Toast.makeText(LoginActivity.this, getString(R.string.login_failed_message),
Toast.LENGTH_SHORT).show();
mProgressDialog.dismiss();
mLoginButton.setEnabled(true);
}
}
});
}
private void viewsSetup() {
mEmailTextField = (EditText) findViewById(R.id.email);
mPasswordTextField = (EditText) findViewById(R.id.password);
mLoginButton = (Button) findViewById(R.id.login_button);
mLoginButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
loginButtonPressed();
}
});
TextView mSignUp = (TextView) findViewById(R.id.create_an_account);
mSignUp.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), SignUpActivity.class);
onPause();
startActivityForResult(intent, REQUEST_SIGNUP);
}
});
mProgressDialog = new ProgressDialog(this);
}
private void loginButtonPressed() {
Log.d(TAG, "Login");
if (!textFieldsFormatValid()) {
Toast.makeText(LoginActivity.this, getString(R.string.check_text_fields),
Toast.LENGTH_SHORT).show();
return;
}
View view = getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
mLoginButton.setEnabled(false);
String email = mEmailTextField.getText().toString();
String password = mPasswordTextField.getText().toString();
signIn();
}
private boolean textFieldsFormatValid() {
boolean valid = true;
String email = mEmailTextField.getText().toString();
String password = mPasswordTextField.getText().toString();
if (email.isEmpty() || !Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
mEmailTextField.setError(getString(R.string.ask_valid_email));
valid = false;
} else {
mEmailTextField.setError(null);
}
if (password.isEmpty()) {
mPasswordTextField.setError(getString(R.string.required_field_msg));
valid = false;
} else {
mPasswordTextField.setError(null);
}
return valid;
}
private void toMainActivity() {
// Go to main activity
startActivity(new Intent(LoginActivity.this, MainActivity.class));
// Destroy activity to free memory we won't need it anymore until logout
finish();
}
}
SignUpActivity.java
public class SignUpActivity extends AppCompatActivity {
// Used to determine when user finished signing up
private boolean mFinished = false;
// Firebase stuff
private FirebaseAuth mAuth;
private FirebaseAuth.AuthStateListener mAuthListener;
// Views stuff
private EditText mEmail;
private EditText mPassword;
private EditText mPasswordConfirm;
private EditText mFullname;
private Button mSignUpButton;
private ProgressDialog mProgressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sign_up);
firebaseSetup();
viewsSetup();
}
@Override
public void onDestroy() {
super.onStop();
if(mAuthListener != null) mAuth.removeAuthStateListener(mAuthListener);
}
private void signUp() {
mProgressDialog = ProgressDialog.show(this, getString(R.string.signing_up), null, true);
if (!textFieldsFormatValid()) {
Toast.makeText(getBaseContext(), getString(R.string.check_text_fields), Toast.LENGTH_LONG).show();
return;
}
mSignUpButton.setEnabled(false);
final String email = mEmail.getText().toString();
final String password = mPassword.getText().toString();
mAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(SignUpActivity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
// Do not handle authentification success here, on complete
// this will notify the Authentification Listener
if(!task.isSuccessful()) {
Toast.makeText(getBaseContext(), getString(R.string.signup_fail), Toast.LENGTH_LONG).show();
mSignUpButton.setEnabled(true);
mProgressDialog.dismiss();
} else {
mFinished = true;
}
}
});
}
private void firebaseSetup() {
mAuth = FirebaseAuth.getInstance();
mAuthListener = new FirebaseAuth.AuthStateListener() {
@Override
public void onAuthStateChanged(@NonNull final FirebaseAuth firebaseAuth) {
final FirebaseUser user = firebaseAuth.getCurrentUser();
if(user != null && !mFinished) {
UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
.setDisplayName(mFullname.getText().toString())
.build();
user.updateProfile(profileUpdates).addOnCompleteListener(new OnCompleteListener<Void>() {
@Override
public void onComplete(@NonNull Task<Void> task) {
firebaseAuth.signOut();
}
});
} else if (mFinished){
// Wait for logout here
firebaseAuth.removeAuthStateListener(this);
mSignUpButton.setEnabled(true);
mProgressDialog.dismiss();
setResult(RESULT_OK, null);
finish();
}
}
};
mAuth.addAuthStateListener(mAuthListener);
}
private void viewsSetup() {
mEmail = (EditText) findViewById(R.id.email);
mPassword = (EditText) findViewById(R.id.password);
mPasswordConfirm = (EditText) findViewById(R.id.password_confirm);
mFullname = (EditText) findViewById(R.id.full_name);
mSignUpButton = (Button) findViewById(R.id.signup_button);
TextView mLoginLink = (TextView) findViewById(R.id.to_login);
mSignUpButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
signUpButtonPressed();
}
});
mLoginLink.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
finish();
}
});
mProgressDialog = new ProgressDialog(this);
}
private void signUpButtonPressed() {
View view = getCurrentFocus();
if (view != null) {
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
if(!textFieldsFormatValid()) {
Toast.makeText(this, R.string.toast_signup_failed, Toast.LENGTH_SHORT);
return;
}
signUp();
}
private boolean textFieldsFormatValid() {
boolean valid = true;
String email = mEmail.getText().toString();
String password = mPassword.getText().toString();
String password2 = mPasswordConfirm.getText().toString();
if (email.isEmpty() || !Patterns.EMAIL_ADDRESS.matcher(email).matches()) {
mEmail.setError(getString(R.string.ask_valid_email));
valid = false;
} else {
mEmail.setError(null);
}
if (password.isEmpty() || password.length() < 6 || password.length() > 10) {
mPassword.setError(getString(R.string.password_err_msg));
valid = false;
} else {
mPassword.setError(null);
}
if (password2.isEmpty() || password2.length() < 6 || password2.length() > 10) {
mPasswordConfirm.setError(getString(R.string.password_err_msg));
valid = false;
} else if (!password2.equals(password)) {
mPasswordConfirm.setError(getString(R.string.match_passwords));
valid = false;
} else {
mPasswordConfirm.setError(null);
}
return valid;
}
}
答案 0 :(得分：0)
如果有人面临同样的问题一次，我就是这样解决的：
问题来自我从异步任务调用firebaseAuth.signOut()的事实（在user.updateProfile(profile)完成时）。我写错else if(mFinished)而不检查user == null是否出错。
导致某些情况导致我在没有退出的情况下回到LoginActivity。