Determine if app was launched from home screen?

Question

In my main activity, onCreate I set a textView to the current date. From that activity, I startActivityForResult activity2, where I can change the date. onActivityResult, I

Answer 1

Try to save the value of the date from activity2 into the android SharedPreferences.

You can set the date to the preferences by using something like this:

SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
SharedPreferences.Editor prefsEditor = myPrefs.edit();
prefsEditor.putString(MY_NAME, "Sai");
prefsEditor.putString(MY_WALLPAPER, "f664.PNG");
prefsEditor.commit();

and you can read the preferences by using something like that:

SharedPreferences myPrefs = this.getSharedPreferences("myPrefs", MODE_WORLD_READABLE);
String prefName = myPrefs.getString(MY_NAME, "nothing");
String wallPaper = myPrefs.getString(MY_WALLPAPER, null);

Set a flag like "dateWasAlreadySet" to the SharedPreferences if the date was set from activty2, so you know that the date was already set.

Pseudo Code:

If(SharedPreferences.dateWasAlreadySet){
    activity1.textField.text = SharedPreferences.get("myDate");
} else {
    activity1.textField.text = currentDate;
}

I hope you understand what I mean.