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AnonymousAuthActivity.java
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AnonymousAuthActivity.java
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/**
* Copyright 2021 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.google.firebase.quickstart.auth;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;
import androidx.annotation.NonNull;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.EmailAuthProvider;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
/**
* Activity to demonstrate anonymous login and account linking (with an email/password account).
*/
public class AnonymousAuthActivity extends Activity {
private static final String TAG = "AnonymousAuth";
// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// [START initialize_auth]
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
// [END initialize_auth]
}
// [START on_start_check_user]
@Override
public void onStart() {
super.onStart();
// Check if user is signed in (non-null) and update UI accordingly.
FirebaseUser currentUser = mAuth.getCurrentUser();
updateUI(currentUser);
}
// [END on_start_check_user]
private void signInAnonymously() {
// [START signin_anonymously]
mAuth.signInAnonymously()
.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(TAG, "signInAnonymously:success");
FirebaseUser user = mAuth.getCurrentUser();
updateUI(user);
} else {
// If sign in fails, display a message to the user.
Log.w(TAG, "signInAnonymously:failure", task.getException());
Toast.makeText(AnonymousAuthActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
updateUI(null);
}
}
});
// [END signin_anonymously]
}
private void linkAccount() {
AuthCredential credential = EmailAuthProvider.getCredential("", "");
// [START link_credential]
mAuth.getCurrentUser().linkWithCredential(credential)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (task.isSuccessful()) {
Log.d(TAG, "linkWithCredential:success");
FirebaseUser user = task.getResult().getUser();
updateUI(user);
} else {
Log.w(TAG, "linkWithCredential:failure", task.getException());
Toast.makeText(AnonymousAuthActivity.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
updateUI(null);
}
}
});
// [END link_credential]
}
private void updateUI(FirebaseUser user) {
}
}