1.自动登录前检测保存帐号
/**
* Auto login when sp user exists
*
* @return
*/
public static boolean checkExistUser(Context mContext) {
SharedPreferences sp = mContext.getSharedPreferences(SP_ACCOUNT_INFO, Context.MODE_PRIVATE);
String account = sp.getString(CUR_ACCOUNT,
null);
String nickname = sp.getString(CUR_NICKNAME,
null);
String img = sp.getString(CUR_AVATAR,
null);
if (account ==
null || nickname ==
null) {
return false;
}
else {
currentUser =
new Owner();
currentUser.setName(account);
currentUser.setNick(nickname);
currentUser.setImg(img ==
null ?
"default" : img);
return true;
}
}
2.登录成功后保存或更新现有的帐号信息
/**
* Remember current user when new account login
*
* @param user
*/
public static void setCurrentUser(Context mContext, Owner user) {
currentUser = user;
SharedPreferences sp = mContext.getSharedPreferences(SP_ACCOUNT_INFO, Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();
editor.putString(CUR_ACCOUNT, currentUser.getName());
editor.putString(CUR_NICKNAME, currentUser.getNick());
editor.putString(CUR_AVATAR, currentUser.getImg());
editor.commit();
}
1.可在应用首页的onCreate方法中调用checkExistUser方法检测，如果返回为false则跳转至登录页面。 2.也可在登录页面的onCreate方法中调用checkExistUser方法检测，如果返回为true则直接跳转至应用首页。 3.退出帐号方法中写清空SharedPreference操作，以免退出后仍自动登录。
