我将用户登录详细信息保存到我的SharedPreferences文件中 . 问题是当我尝试清除ShredPreferences时，细节不清楚 . 当下一个用户登录时，他的详细信息未显示 .

这是我的代码： -

Save.java

sessionManager.createLoginSession(username, deviceId, name );

SessionManagement.java

SharedPreferences pref;

// Editor for Shared preferences

Editor editor;

// Context

Context _context;

// Shared pref mode

int PRIVATE_MODE = 0;

// Sharedpref file name

private static final String PREF_NAME = "UserDetails";

public SessionManagement(Context context)

{

this._context = context;

pref = _context.getSharedPreferences(PREF_NAME, PRIVATE_MODE);

editor = pref.edit();

}

public void createLoginSession(String emailId, String deviceid,String usersname)

{

// Storing login value as TRUE

editor.putBoolean(IS_LOGIN, true);

editor.putBoolean(KEY_DEVICEREGISTERED, true);

editor.putString(KEY_EMAILID, emailId);

editor.putString(KEY_DEVICEiD, deviceid);

editor.putString(KEY_USERSNAME, usersname);

// commit changes

editor.commit();

}

/**

* Get stored session data

* */

public HashMap getUserDetails()

{

HashMap user = new HashMap();

user.put(KEY_EMAILID, pref.getString(KEY_EMAILID, null));

user.put(KEY_DEVICEiD, pref.getString(KEY_DEVICEiD, null));

user.put(KEY_USERSNAME, pref.getString(KEY_USERSNAME, null));

// return user

return user;

}

/**

* Check login method wil check user login status

* If false it will redirect user to login page

* Else won't do anything

* */

public void checkLogin()

{

// Check login status

if(!this.isLoggedIn())

{

// user is not logged in redirect him to Login Activity

Intent i = new Intent(_context, Login.class);

// Closing all the Activities

i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

// Add new Flag to start new Activity

i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

// Staring Login Activity

_context.startActivity(i);

}

}

// This function clears all session data and redirect the user to LoginActivity

/**

* Clear session details

* */

public void logoutUser()

{

// Clearing all data from Shared Preferences

//editor.clear();

editor.remove(KEY_DEVICEiD);

editor.remove(KEY_EMAILID);

editor.remove(KEY_USERSNAME);

editor.commit();

// After logout redirect user to Loing Activity

Intent i = new Intent(_context, Login.class);

// Closing all the Activities

i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

// Add new Flag to start new Activity

i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

// Staring Login Activity

_context.startActivity(i);

}

public boolean isLoggedIn()

{

return pref.getBoolean(IS_LOGIN, false);

}

Logout.java

SessionManagement session = new SessionManagement(getApplicationContext());

session.logoutUser();

完();