Question

I am new to Android Mono programming, but I have what is probably a simple question. Basically what I am doing is storing a String value whenever my app is exited via home or back button action. I want to restore this String value to the proper TextView field when the app is reopened. This seems simple enough, but I have yet to discover the means to do so. So far I have the string as a global variable to my Activity class, and I set it anytime an action is taken in my app where this value is changed. I have handled OnResume and OnRestart to try and repopulate the TextView but seems the life cycle of the activity causes the value of this String to be lost when the app is exited. Where or how can I store this value upon change or exit of the app, so when its resumed, the value can be restored?

Answer 1

use this to store the string…

        final SharedPreferences pref1 = getSharedPreferences("myapp", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref1.edit();
        editor.putString("Stringval", "xxxxxxx");
        editor.commit();

to get the value from SharedPreference use below code:-

    final SharedPreferences pref1 = getSharedPreferences("myapp", MODE_PRIVATE);
    String str1= pref2.getString("Stringval", null);