CODEWITHSUNDEEP
javaandroidjava.util.date
Kamil
Kamil

Reputation: 33

Run a method if Date is the next day

I want do something like this:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity);

 int i = (int) (new Date().getTime()/1000);

   if(      ) // next day
     {
         mymethod();
     }
}

When in system date is a new day, then I want to call mymethod()

Upvotes: 2

Views: 2383

Answers (2)

Phyrum Tea
Phyrum Tea

Reputation: 2653

With new day do you mean after midnight? So you want to detect if the date is different from last time?

  @Override
  protected void onResume() {
     SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(this);
     int lastTimeStarted = settings.getInt("last_time_started", -1);
     Calendar calendar = Calendar.getInstance();
     int today = calendar.get(Calendar.DAY_OF_YEAR);

    if (today != lastTimeStarted) {
      //startSomethingOnce();

      SharedPreferences.Editor editor = settings.edit();
      editor.putInt("last_time_started", today);
      editor.commit();
    }
  }

Upvotes: 3

Kamil
Kamil

Reputation: 33

Great idea!

In my first activity I set something like this inside onCreate :

 Calendar c = Calendar.getInstance();
    int currentTimeSeconds = c.get(Calendar.SECOND);
    SharedPreferences share = PreferenceManager.getDefaultSharedPreferences(this);
    SharedPreferences.Editor edittime = share.edit();
    edittime.putInt("timevalue",currentTimeSeconds);
    edittime.commit();

and use your code in another activity inside onCreate:

    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
    int secondsPreviousDay = prefs.getInt("seconds", 0);
    if (secondsPreviousDay != 0){ //means there was an earlier set value from previously entering the activity
        //compare if more than 3600*24 = 86400 (1 day in seconds) had passed
        if (currentTimeSeconds - secondsPreviousDay > 86400){
           // mymethod();
            mymethod();

        }
    }
    else {
        prefs.edit().putInt("seconds", currentTimeSeconds).apply();
    }
}

I'm sorry for that but I'm still learning

Upvotes: 0

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