我遇到翻新登录的问题。当我在手机中运行该应用程序时，我以注册用户身份登录...登录成功...但是当我注销并要使用另一个帐户重新登录时，“该应用程序使用先前的帐户登录了我” ...我不明白这是什么问题，请帮忙。 我不明白为什么我的应用程序会出现此问题。
注意：我在应用程序中使用翻新（带有Firebase）进行注册和登录。 谢谢
这是我的登录课程的代码
private Button forgot ;
private TextView CreactAccount_text;
private EditText login_email , login_password;
private ProgressDialog mLoginProgress;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login_);
overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
Toolbar toolbar = (Toolbar) findViewById(R.id.login_page_toolbar);
setSupportActionBar(toolbar);
if (getSupportActionBar()!= null){
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
FirebaseApp.initializeApp(this);
// Realm.init(this);
// User Session Manager
Window window = getWindow();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
window.setStatusBarColor(getColor(R.color.login_statusbar_color));
}
else {
window.setStatusBarColor(getResources().getColor(R.color.login_statusbar_color));
}
mLoginProgress = new ProgressDialog(this);
CreactAccount_text = (TextView) findViewById(R.id.ui_crateaccount_text);
forgot = (Button) findViewById(R.id.ui_btn_forgot);
forgot.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent forgot_password = new Intent(Login_Activity.this , Forgot_Password_Activity.class);
startActivity(forgot_password);
}
});
CreactAccount_text.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent move_signup = new Intent(Login_Activity.this , Signup_Activity.class);
startActivity(move_signup);
}
});
login_email = (EditText) findViewById(R.id.ui_login_email);
login_password = (EditText) findViewById(R.id.ui_login_password);
findViewById(R.id.ui_signin).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
usersignin();
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == android.R.id.home)
finish();
return super.onOptionsItemSelected(item);
}
@Override
public void onBackPressed() {
super.onBackPressed();
overridePendingTransition(
R.anim.no_anim, R.anim.slide_right_out);
AppUtils.hideSoftKeyboard(this);
}
public void usersignin(){
final String email = login_email.getText().toString().trim();
final String password = login_password.getText().toString().trim();
if (!Patterns.EMAIL_ADDRESS.matcher(email).matches()){
login_email.setError("Email is not correctly formated");
login_email.requestFocus();
return;
}
if (password.isEmpty()){
login_password.setError("password is required");
login_password.requestFocus();
return;
}
if (password.length() < 6){
login_password.setError("Password should be atleast 6 characters");
login_password.requestFocus();
return;
}
if(!TextUtils.isEmpty(email) || !TextUtils.isEmpty(password)){
mLoginProgress.setTitle("Logging In");
mLoginProgress.setMessage("Please wait while we check your credentials.");
mLoginProgress.setCanceledOnTouchOutside(false);
mLoginProgress.show();
SharedPreferenceUtil.storeStringValue(Login_Activity.this, Constants.USERNAME,email);
SharedPreferenceUtil.storeStringValue(Login_Activity.this,Constants.PASSWORD,password);
RetrofitUtil.createProviderAPI().userLogin(email , password).enqueue(loginUser(this));
}
}
@Override
public void onLoginUser(RetrofitClientLogin data) {
if(data.getType().equals(Constants.SUCCESS)){
FirebaseInstanceId.getInstance().getToken();
UtilFirebaseAnalytics.logEvent(Constants.EVENT_LOGIN,Constants.KEY_EMAIL,login_email.getText().toString());
SharedPreferenceUtil.storeBooleanValue(this,Constants.ISUSERLOGGEDIN,true);
if(getIntent() != null && getIntent().getBooleanExtra(Constants.IS_RESULT_ACTIVITY,false)){
setResult(RESULT_OK);
}else{
hideProgressDialog();
openAcitivty(Home_Activity.class);
}
loginOnFirebase();
}
}
private void loginOnFirebase(){
final FirebaseAuth mAuth = FirebaseAuth.getInstance();
FirebaseUser currentUser = mAuth.getCurrentUser();
if(currentUser == null){
final String email = login_email.getText().toString();
final String password = login_password.getText().toString();
mAuth.signInWithEmailAndPassword(email, password)
.addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
if (!task.isSuccessful()) {
mAuth.createUserWithEmailAndPassword(email, password)
.addOnCompleteListener(Login_Activity.this, new OnCompleteListener<AuthResult>() {
@Override
public void onComplete(@NonNull Task<AuthResult> task) {
hideProgressDialog();
finish();
}
});
}else{
hideProgressDialog();
finish();
}
}
});
}
}
protected void openAcitivty(Class<?> cls) {
Intent intent = new Intent(this, cls);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
protected void showProgressDialog(String msg) {
try {
if (mLoginProgress != null && !mLoginProgress.isShowing()) {
mLoginProgress.setMessage(msg);
mLoginProgress.show();
}
} catch (Exception e) {
e.printStackTrace();
}
}
protected void hideProgressDialog() {
try {
if (mLoginProgress != null && mLoginProgress.isShowing()) {
mLoginProgress.dismiss();
}
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void onSignup(RetrofitClientLogin data) {
}
@Override
public void OnError(String error) {
hideProgressDialog();
Toast.makeText(this,error,Toast.LENGTH_LONG).show();
}
答案 0 :(得分：0)
您正在使用SharedPreferences来存储登录凭据。用户输入有效的登录凭据（登录ID和密码）后，您可以通过usersignin()方法将其存储在SharedPreferences中。
SharedPreferenceUtil.storeStringValue(Login_Activity.this, Constants.USERNAME, email);
SharedPreferenceUtil.storeStringValue(Login_Activity.this, Constants.PASSWORD, password);
现在，我假设（您只发布了LoginActivity，没有提及其他部分），您的应用具有启动页面。出现在登录页面之前。您可以在其中确定用户是否已经登录（使用SharedPreference值）。如果是，请重定向到“主页”或“登录”页面。
此问题的解决方法非常简单。当用户从应用程序注销时，您还需要清除SharedPreferences。
喜欢这个
SharedPreferenceUtil.storeStringValue(Login_Activity.this, Constants.USERNAME, null);
SharedPreferenceUtil.storeStringValue(Login_Activity.this, Constants.PASSWORD, null);