/
AnonymousAuthActivity.java
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/
AnonymousAuthActivity.java
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/**
* Copyright 2016 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.java;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
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;
import com.google.firebase.quickstart.auth.R;
/**
* Activity to demonstrate anonymous login and account linking (with an email/password account).
*/
public class AnonymousAuthActivity extends BaseActivity implements
View.OnClickListener {
private static final String TAG = "AnonymousAuth";
// [START declare_auth]
private FirebaseAuth mAuth;
// [END declare_auth]
private EditText mEmailField;
private EditText mPasswordField;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_anonymous_auth);
// [START initialize_auth]
// Initialize Firebase Auth
mAuth = FirebaseAuth.getInstance();
// [END initialize_auth]
// Fields
mEmailField = findViewById(R.id.fieldEmail);
mPasswordField = findViewById(R.id.fieldPassword);
// Click listeners
findViewById(R.id.buttonAnonymousSignIn).setOnClickListener(this);
findViewById(R.id.buttonAnonymousSignOut).setOnClickListener(this);
findViewById(R.id.buttonLinkAccount).setOnClickListener(this);
}
// [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() {
showProgressDialog();
// [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);
}
// [START_EXCLUDE]
hideProgressDialog();
// [END_EXCLUDE]
}
});
// [END signin_anonymously]
}
private void signOut() {
mAuth.signOut();
updateUI(null);
}
private void linkAccount() {
// Make sure form is valid
if (!validateLinkForm()) {
return;
}
// Get email and password from form
String email = mEmailField.getText().toString();
String password = mPasswordField.getText().toString();
// Create EmailAuthCredential with email and password
AuthCredential credential = EmailAuthProvider.getCredential(email, password);
// Link the anonymous user to the email credential
showProgressDialog();
// [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);
}
// [START_EXCLUDE]
hideProgressDialog();
// [END_EXCLUDE]
}
});
// [END link_credential]
}
private boolean validateLinkForm() {
boolean valid = true;
String email = mEmailField.getText().toString();
if (TextUtils.isEmpty(email)) {
mEmailField.setError("Required.");
valid = false;
} else {
mEmailField.setError(null);
}
String password = mPasswordField.getText().toString();
if (TextUtils.isEmpty(password)) {
mPasswordField.setError("Required.");
valid = false;
} else {
mPasswordField.setError(null);
}
return valid;
}
private void updateUI(FirebaseUser user) {
hideProgressDialog();
TextView idView = findViewById(R.id.anonymousStatusId);
TextView emailView = findViewById(R.id.anonymousStatusEmail);
boolean isSignedIn = (user != null);
// Status text
if (isSignedIn) {
idView.setText(getString(R.string.id_fmt, user.getUid()));
emailView.setText(getString(R.string.email_fmt, user.getEmail()));
} else {
idView.setText(R.string.signed_out);
emailView.setText(null);
}
// Button visibility
findViewById(R.id.buttonAnonymousSignIn).setEnabled(!isSignedIn);
findViewById(R.id.buttonAnonymousSignOut).setEnabled(isSignedIn);
findViewById(R.id.buttonLinkAccount).setEnabled(isSignedIn);
}
@Override
public void onClick(View v) {
int i = v.getId();
if (i == R.id.buttonAnonymousSignIn) {
signInAnonymously();
} else if (i == R.id.buttonAnonymousSignOut) {
signOut();
} else if (i == R.id.buttonLinkAccount) {
linkAccount();
}
}
}