Error while accessing shared preferences of Android App's first run

问题

Whenever I run my Android app for the first time after installation and access the shared preferences, I get this system error -

remove failed: ENOENT (No such file or directory) : /data/user/0/com.example.ap/shared_prefs/com.google.android.gms.appid.xml.bak

I am not able to figure out what this error means. Any help will be appreciated. Thanks

Code to access shared preferences -

String setOrNot;
    SharedPreferences sharedPref = getSharedPreferences("LastFetchTimeFile",MODE_PRIVATE);
    if(sharedPref.contains("LastFetchTime"))
    {
        String lastFetchTime = sharedPref.getString("LastFetchTime", null);
        setOrNot = lastFetchTime;
    }
    else
    {
        setOrNot = "notSetYet";
    }

回答1:

Remove the if condition, shared preference handles that for you. What i would do is

String setOrNot;
SharedPreferences sharedPref = getSharedPreferences("LastFetchTimeFile",MODE_PRIVATE);

     setOrNot = sharedPref.getString("LastFetchTime", "notSetYet");

Also can you tell me which device/os ?

来源：https://stackoverflow.com/questions/41843580/error-while-accessing-shared-preferences-of-android-apps-first-run