如何保持用戶狀態登錄火力的Oauth安卓

Question

我是初學者水平編碼器和麪臨的一個問題：/ 我實現與火力地堡的OAuth用戶登錄註冊....

我登錄活動代碼是... 。

public class UserLogin extends AppCompatActivity { 
    Button SignInBtn; 
    EditText EmailField, PasswordField; 
    TextView notReg; 
    FirebaseAuth mAuth; 
    FirebaseAuth.AuthStateListener mAuthListner; 
    String UserEmail, UserPass; 


    @Override 
    protected void onResume() { 
     super.onResume(); 
    } 

    @Override 
    protected void onStart() { 
     super.onStart(); 
     mAuth.addAuthStateListener(mAuthListner); 
    } 

    @Override 
    protected void onStop() { 
     super.onStop(); 
     if (mAuthListner != null) { 
      mAuth.removeAuthStateListener(mAuthListner); 
     } 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 
    } 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_user_login); 
     Initialization(); // views initialized 
     mAuth = FirebaseAuth.getInstance(); 
     mAuthListnerSetup(); 


     SignInBtn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       UserEmail = EmailField.getText().toString(); 
       if (TextUtils.isEmpty(UserEmail)) { 
        EmailField.setError("Enter Email."); 
       } 
       UserPass = PasswordField.getText().toString(); 
       if (TextUtils.isEmpty(UserPass)) { 
        PasswordField.setError("Enter Password"); 
       } 
       SignIn(UserEmail, UserPass); 
      } 
     }); 

     notReg.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View view) { 
       startActivity(new Intent(UserLogin.this, MainActivity.class)); 
      } 
     }); 

    } //onCreate Method 

    private void mAuthListnerSetup() { 
     mAuthListner = new FirebaseAuth.AuthStateListener() { 
      @Override 
      public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { 
       FirebaseUser user = firebaseAuth.getCurrentUser(); 
      } 
     }; 
    } 

    private void Initialization() { 
     EmailField = (EditText) findViewById(R.id.userSigninEmail); 
     PasswordField = (EditText) findViewById(R.id.userSigninPass); 
     SignInBtn = (Button) findViewById(R.id.SigninBtn); 
     notReg = (TextView) findViewById(R.id.notRegUser); 
    } 

    private void SignIn(String email, String pass) { 
     mAuth.signInWithEmailAndPassword(email, pass).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { 
      @Override 
      public void onComplete(@NonNull Task<AuthResult> task) { 
       if (!task.isSuccessful()) { 
        Toast.makeText(UserLogin.this, "Failed...", Toast.LENGTH_SHORT).show(); 
       } else { 
        startActivity(new Intent(UserLogin.this, all.class)); 
       } 
      } 
     }); 
    } 

} 

當用戶成功登錄後，新的活動開始，我想從下一個活動訪問用戶資料....：/ 在此先感謝希望我能幫助:)

Answer 1

你可以使用此代碼：

FirebaseUser firebaseUser = firebaseAuth.getCurrentUser(); 
String uid = firebaseUser.getUid(); 
String userName = firebaseUser.getDisplayName(); 
String emailAddress = firebaseUser.getEmail(); 
//and so on for the others details 

要使用活動之間的數據可以使用一個Intent這樣的：

//FirstActivity 
Intent intent = new Intent(FirstActivity.this, SecondActivity.class); 
intent.putExtra("uid", uid); 
intent.putExtra("userName", userName); 
intent.putExtra("emailAddress", emailAddress); 
startActivity(intent); 

而要取回數據使用此代碼：

//SecondActivity 
String uid = (String) getIntent().getExtras().get("uid"); 
String userName = (String) getIntent().getExtras().get("userName"); 
String emailAddress = (String) getIntent().getExtras().get("emailAddress"); 

希望它能幫助。