public void updateLoginUserInfo(User user) {
SQLiteDatabase db = helper.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(LoginUserTable.AVATAR, user.getAvatar());
values.put(LoginUserTable.UNAME, user.getUname());
db.update(LoginUserTable.TABLE_NAME, values, "uid=?", new String[] {user.getUid()});
db.close();
}
public void delete(User user) {
SQLiteDatabase db = helper.getWritableDatabase();
db.execSQL("delete from loginuser where uid=?", new String[] {user.getUid()});
}