Firebase使用电话号码登录身份验证 Firebase电话号码登录验证|Fire

电话号码身份验证是最后一种登录方法, 我们将在身份验证部分进行讨论。许多组织广泛使用了这些身份验证方法。
通过向用户的手机发送短信, 我们可以对登录用户使用Firebase身份验证。
用户将使用在消息框中收到的一次性代码登录。
我们将在整个流程中进行验证, 并为此编写所有代码。对于使用电话号码的登录身份验证, 我们还可以使用前面已经讨论过的Firebase UI。
开始步骤是相同的??, 例如创建Firebase项目, 创建Android Studio项目, 将firebase添加到我们的Android应用, 添加firebase-auth和firebase-core依赖项, 添加SHA-1和SHA-256密钥, 添加JSON文件, 并应用插件。下一步是在Firebase控制台中启用电话号码身份验证。在完成这些初步步骤之后, 我们必须执行以下步骤：
步骤1：
现在, 我们将在清单文件中添加使用Internet的权限。
第2步：
现在, 我们将修改“ activity_main.xml”文件以进行电话号码身份验证。布局设计如下：

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第三步：
现在, 我们将对电话号码验证进行编码。我们将修改“ MainActivity.java”文件。以下是电话号码验证的代码。

//Implementing onClickListenerpublic class MainActivity extends AppCompatActivity implements View.OnClickListener {private static final String TAG = "PhoneAuthActivity"; //Adding a member variable for the key verification in progressprivate static final String KEY_VERIFY_IN_PROGRESS = "key_verify_in_progress"; //Creating FirebaseAuth member variableprivate FirebaseAuth mAuth; //Adding a bunch of member variables for view groups, edit text, and buttons.private ViewGroup mPhoneNumberViews; private ViewGroup mSignedInViews; private EditText mPhoneNumberField; private EditText mVerificationField; private Button mStartButton; private Button mVerifyButton; private Button mResendButton; private Button mSignOutButton; //Setting Boolean to say whether or not we are in progress. private boolean mVerificationInProgress = false; //Adding verification id as a member variable. private String mVerificationId; //Adding a member variable for PhoneAuthProvider.ForceResendingToken callback. private PhoneAuthProvider.ForceResendingToken mResendToken; //Adding a member variable for a callback which is our PhoneAuthProvider.OnVerificationStateChangeCallbacks.private PhoneAuthProvider.OnVerificationStateChangedCallbacks mCallbacks; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Restoring the instance stateif (savedInstanceState != null) {onRestoreInstanceState(savedInstanceState); }// Assigning all the viewsmPhoneNumberViews = findViewById(R.id.phoneAuthFields); mSignedInViews = findViewById(R.id.signedInButtons); mPhoneNumberField = findViewById(R.id.fieldPhoneNumber); mVerificationField = findViewById(R.id.fieldVerificationCode); mStartButton = findViewById(R.id.buttonStartVerification); mVerifyButton = findViewById(R.id.buttonVerifyPhone); mResendButton = findViewById(R.id.buttonResend); mSignOutButton = findViewById(R.id.signOutButton); // Setting all the click listenersmStartButton.setOnClickListener(this); mVerifyButton.setOnClickListener(this); mResendButton.setOnClickListener(this); mSignOutButton.setOnClickListener(this); // Initialize Firebase AuthmAuth = FirebaseAuth.getInstance(); // Initializing phone auth callbacks(For verification, Not entering code yet, To get text send to device)mCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {@Overridepublic void onVerificationCompleted(PhoneAuthCredential credential) {// It will be invoked in two situations, i.e., instant verification and auto-retrieval:// 1 - In few of the cases, the phone number can be instantly verified without needing toenter or send a verification code.// 2 - On some devices, Google Play services can automatically detect the incoming verification SMS and perform verification without//user action.Log.d(TAG, "onVerificationCompleted:" + credential); mVerificationInProgress = false; //Calling signInWithPhoneAuthCredential.signInWithPhoneAuthCredential(credential); }//Creating onVerificationFailed() method.@Overridepublic void onVerificationFailed(FirebaseException e) {// It is invoked when an invalid request is made for verification.//For instance, if the phone number format is not valid.Log.w(TAG, "onVerificationFailed", e); mVerificationInProgress = false; if (e instanceof FirebaseAuthInvalidCredentialsException) {// Invalid request// Setting error to text fieldmPhoneNumberField.setError("Invalid phone number."); } else if (e instanceof FirebaseTooManyRequestsException) {// The SMS quota has been exceeded for the projectToast.makeText(getApplicationContext(), "Quota exceeded", Toast.LENGTH_SHORT).show(); }}// Creating onCodeSent() method called after the verification code has been sent by SMS to the provided phone number.@Overridepublic void onCodeSent(String verificationId, PhoneAuthProvider.ForceResendingToken token) {// The SMS verification code will be sent to the provided phone number// Now need to ask the user for entering the code and then construct a credential// through integrating the code with a verification ID.Log.d(TAG, "onCodeSent:" + verificationId); // Save the verification ID and resend token to use them latermVerificationId = verificationId; mResendToken = token; }}; }// Creating onStart method.@Overridepublic void onStart() {super.onStart(); // Checking if the user is signed in or not. If signed in, then update UI accordingly.FirebaseUser currentUser = mAuth.getCurrentUser(); if (currentUser != null) {Log.d(TAG, "Currently Signed in: " + currentUser.getEmail()); Toast.makeText(MainActivity.this, "Currently Logged in: " + currentUser.getEmail(), Toast.LENGTH_LONG).show(); mPhoneNumberViews.setVisibility(View.GONE); mSignedInViews.setVisibility(View.VISIBLE); }else {mPhoneNumberViews.setVisibility(View.VISIBLE); mSignedInViews.setVisibility(View.GONE); }//check if a verification is in progress. If it is then we have to re verify.if (mVerificationInProgress & & validatePhoneNumber()) {startPhoneNumberVerification(mPhoneNumberField.getText().toString()); }}//Implementing SaveInstanceState to save the flag.@Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState); outState.putBoolean(KEY_VERIFY_IN_PROGRESS, mVerificationInProgress); }//Implementing RestoreInstanceState to restore the flag.@Overrideprotected void onRestoreInstanceState(Bundle savedInstanceState) {super.onRestoreInstanceState(savedInstanceState); mVerificationInProgress = savedInstanceState.getBoolean(KEY_VERIFY_IN_PROGRESS); }// Creating startPhoneNumberVerification() method//Getting text code sent. So we can use it to sign-in.private void startPhoneNumberVerification(String phoneNumber) {PhoneAuthProvider.getInstance().verifyPhoneNumber(phoneNumber, // Phone number to verify60, // Timeout durationTimeUnit.SECONDS, // Unit of timeoutthis, // Activity (for callback binding)mCallbacks); // OnVerificationStateChangedCallbacks//Setting flag to say that the verification is in process.mVerificationInProgress = true; }//Creating a helper method for verification of phone number with code.// Entering code and manually signing in with that codeprivate void verifyPhoneNumberWithCode(String verificationId, String code) {PhoneAuthCredential credential = PhoneAuthProvider.getCredential(verificationId, code); signInWithPhoneAuthCredential(credential); }// Creating helper method signInWithPhoneAuthCredential(). //Use text to sign-in. private void signInWithPhoneAuthCredential(PhoneAuthCredential credential) {//Adding onCompleteListener to signInWithCredential.mAuth.signInWithCredential(credential).addOnCompleteListener(this, new OnCompleteListener< AuthResult> () {@Overridepublic void onComplete(@NonNull Task< AuthResult> task) {if (task.isSuccessful()) {//Sign-In is successful, update the UI with the signed-in user's informationLog.d(TAG, "signInWithCredential:success"); FirebaseUser user = task.getResult().getUser(); mPhoneNumberViews.setVisibility(View.GONE); mSignedInViews.setVisibility(View.VISIBLE); } else {// If the Sign-In fails, it will display a message and also update the UILog.w(TAG, "signInWithCredential:failure", task.getException()); if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {// The verification code entered was invalidmVerificationField.setError("Invalid code."); }}}}); }// Creating helper method for validating phone number. private boolean validatePhoneNumber() {String phoneNumber = mPhoneNumberField.getText().toString(); if (TextUtils.isEmpty(phoneNumber)) {mPhoneNumberField.setError("Invalid phone number."); return false; }return true; }//Creating helper method for resending verification code. private void resendVerificationCode(String phoneNumber, PhoneAuthProvider.ForceResendingToken token) {PhoneAuthProvider.getInstance().verifyPhoneNumber(phoneNumber, // Phone number to verify60, // Timeout durationTimeUnit.SECONDS, // Unit of timeoutthis, // Activity (for callback binding)mCallbacks, // OnVerificationStateChangedCallbackstoken); // ForceResendingToken from callbacks}//Adding onClick method which handles the button clicks.@Overridepublic void onClick(View view) {switch (view.getId()) {case R.id.buttonStartVerification:if (!validatePhoneNumber()) {return; }//Calling startPhoneNumberVerification helper method for verifying phone number.startPhoneNumberVerification(mPhoneNumberField.getText().toString()); break; case R.id.buttonVerifyPhone:String code = mVerificationField.getText().toString(); if (TextUtils.isEmpty(code)) {mVerificationField.setError("Cannot be empty."); return; }//Call the verifyPhoneNumberWithCode () method.verifyPhoneNumberWithCode(mVerificationId, code); break; case R.id.buttonResend://Call the resendVerificationCode () method.resendVerificationCode(mPhoneNumberField.getText().toString(), mResendToken); break; case R.id.signOutButton://Call the signOut() method.signOut(); break; }}//Create the signOut() method. private void signOut() {mAuth.signOut(); mPhoneNumberViews.setVisibility(View.VISIBLE); mSignedInViews.setVisibility(View.GONE); }}

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