我有一个非常基本的问题要问。我是android应用程序开发的新手。我严格遵循源代码中的教程说明。但是当涉及到存储用户数据时，我的导师正在使用parse.com。但parse.com将于明年关闭，因此该选项已关闭。所以我决定改用Firebase，现在我安装了所需的所有软件包。 我想在Firebase上为我的应用程序中的注册页面添加电子邮件/密码身份验证。请向我提供我应添加的代码，还请指定应将其放置在何处（例如，在oncreate下）还有我应该初始化的东西
谢谢！
这是我的LoginActivity类的代码，其中包括使用Google帐户登录，请参见https://firebase.google.com/docs/auth/web/password-auth中的更多内容>
public class LoginActivity extends AppCompatActivity implements View.OnClickListener{ private EditText txtEmail; private EditText txtPass; private Button btnLogin; private Button btnRegister; private ProgressDialog mProgress; //firebase private FirebaseAuth firAuth; private DatabaseReference firDatabaseUsers; //gogle sign in private SignInButton mGoogleBtn; private static final int RC_SIGN_IN = 1; private static final String TAG = "LoginActivity"; private GoogleApiClient mGoogleApiClient; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_login); firAuth = FirebaseAuth.getInstance(); firDatabaseUsers = FirebaseDatabase.getInstance().getReference().child("Users"); firDatabaseUsers.keepSynced(true); txtEmail =(EditText) findViewById(R.id.logintxtEmail); txtPass = (EditText) findViewById(R.id.logintxtPass); btnLogin = (Button) findViewById(R.id.loginbtnEnter); btnLogin.setOnClickListener(this); mGoogleBtn = (SignInButton) findViewById(R.id.googlebtn); mGoogleBtn.setOnClickListener(this); mProgress = new ProgressDialog(this); // ---------- GOOGLE SIGN IN ------------ // Configure Google Sign In GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) .requestIdToken(getString(R.string.default_web_client_id)) .requestEmail() .build(); mGoogleApiClient = new GoogleApiClient.Builder(this) .enableAutoManage(this, new GoogleApiClient.OnConnectionFailedListener() { @Override public void onConnectionFailed(@NonNull ConnectionResult connectionResult) { } }) .addApi(Auth.GOOGLE_SIGN_IN_API, gso) .build(); } @Override public void onClick(View view) { if(view.getId() == R.id.loginbtnEnter) { checkLogin(); } else if(view.getId() == R.id.googlebtn) { signInGoogle(); } } private void signInGoogle() { Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient); startActivityForResult(signInIntent, RC_SIGN_IN); } @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...); if (requestCode == RC_SIGN_IN) { GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data); mProgress.setMessage("Iniciando sesión..."); mProgress.show(); if (result.isSuccess()) { // Google Sign In was successful, authenticate with Firebase GoogleSignInAccount account = result.getSignInAccount(); firebaseAuthWithGoogle(account); } else { // Google Sign In failed, update UI appropriately // ... mProgress.dismiss(); } } } private void firebaseAuthWithGoogle(GoogleSignInAccount acct) { Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId()); AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null); firAuth.signInWithCredential(credential) .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { Log.d(TAG, "signInWithCredential:onComplete:" + task.isSuccessful()); // If sign in fails, display a message to the user. If sign in succeeds // the auth state listener will be notified and logic to handle the // signed in user can be handled in the listener. if (!task.isSuccessful()) { Log.w(TAG, "signInWithCredential", task.getException()); Toast.makeText(LoginActivity.this, "Autenticación Fallida.", Toast.LENGTH_SHORT).show(); } else { mProgress.dismiss(); checkUserExist(); } // ... } }); } private void checkLogin () { String _email = txtEmail.getText().toString().trim(); String _pass = txtPass.getText().toString().trim(); if(!TextUtils.isEmpty(_email) && !TextUtils.isEmpty(_pass)) { mProgress.setMessage("Comprobando"); mProgress.show(); firAuth.signInWithEmailAndPassword(_email, _pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if(task.isSuccessful() ) { mProgress.dismiss(); checkUserExist(); } else { mProgress.dismiss(); Toast.makeText(LoginActivity.this, "Error al ingresar", Toast.LENGTH_LONG).show(); } } }); } } private void checkUserExist () { if(firAuth.getCurrentUser() != null) { final String _user_id = firAuth.getCurrentUser().getUid(); firDatabaseUsers.addValueEventListener(new ValueEventListener() { @Override public void onDataChange(DataSnapshot dataSnapshot) { if (dataSnapshot.hasChild(_user_id)) { Intent iSetup = new Intent(LoginActivity.this, MainActivity.class); iSetup.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(iSetup); } else { Intent iSetup = new Intent(LoginActivity.this, MainActivity.class); iSetup.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); startActivity(iSetup); } } @Override public void onCancelled(DatabaseError databaseError) { } }); } }}
要注册用户，您需要运行此代码
final String _name = txtName.getText().toString().trim(); String _email = txtEmail.getText().toString().trim(); String _pass = txtPass.getText().toString().trim(); if(!TextUtils.isEmpty(_name) && !TextUtils.isEmpty(_email) && !TextUtils.isEmpty(_pass) ) { mProgress.setMessage("Registrando ..."); mProgress.show(); firAuth.createUserWithEmailAndPassword(_email, _pass).addOnCompleteListener(new OnCompleteListener<AuthResult>() { @Override public void onComplete(@NonNull Task<AuthResult> task) { if(task.isSuccessful()) { //the user has been registered } } });希望有帮助
观看此视频以获取用于Android https://youtu.be/AX0_dAJ62j4的电子邮件密码使用Firebase