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我遵循API文檔設置用戶身份驗證。我的registerActivity正確地將數據發送到Firebase數據庫，但是當我嘗試爲我的loginActivity設置登錄身份驗證時，登錄按鈕不會像我期望的那樣轉到mainActivity。我的用戶登錄設置有問題嗎？或者有另一種方法我應該使用登錄按鈕的意圖？Android Studio Firebase身份驗證（修正Google服務版本）
public class LoginActivity extends AppCompatActivity {
private EditText emailField;
private EditText passwordField;
private Button loginButton;
private FirebaseAuth loginAuth;
private FirebaseAuth.AuthStateListener loginAuthListener;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login3);
loginAuth = FirebaseAuth.getInstance();
emailField = (EditText) findViewById(R.id.emailField);
passwordField = (EditText) findViewById(R.id.passwordField);
loginButton = (Button) findViewById(R.id.loginButton);
final TextView RegisterLink = (TextView) findViewById(R.id.registerLink);
loginAuthListener = new FirebaseAuth.AuthStateListener(){
@Override
public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth){
if(firebaseAuth.getCurrentUser() != null){
startActivity(new Intent(LoginActivity.this, MainActivity.class));
}
}
};
RegisterLink.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent registerIntent = new Intent(LoginActivity.this, RegisterActivity.class);
LoginActivity.this.startActivity(registerIntent);
}
});
loginButton.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view){
startSignIn();
}
});
}
@Override
protected void onStart(){
super.onStart();
loginAuth.addAuthStateListener(loginAuthListener);
}
private void startSignIn(){
String email = emailField.getText().toString();
String password = passwordField.getText().toString();
if(TextUtils.isEmpty(email) || TextUtils.isEmpty(password)){
if(TextUtils.isEmpty(email)){
Toast.makeText(LoginActivity.this, "Email Field is Empty", Toast.LENGTH_LONG).show();
}else if(TextUtils.isEmpty(password)){
Toast.makeText(LoginActivity.this, "Password Field is Empty", Toast.LENGTH_LONG).show();
} else{
Toast.makeText(LoginActivity.this, "Email Field and Password Field are Empty", Toast.LENGTH_LONG).show();
}
} else {
loginAuth.signInWithEmailAndPassword(email, password).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if(!task.isSuccessful()){
Toast.makeText(LoginActivity.this,"Either the Password or Email Field is Incorrect. Please Try Again.", Toast.LENGTH_LONG).show();
}
}
});
}
}
}