Question

I’ve added the SharedPreferences functionality to my App to launch a specific activity once the App starts after it has been quited.

I use the following code to save the string:

final SharedPreferences pref1 = getSharedPreferences("myapp", MODE_PRIVATE);
            SharedPreferences.Editor editor = pref1.edit();
            editor.putString("Stringval", "view1");
            editor.commit();

Then the following to load the last used activity, this code is below OnCreate

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

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

        if(str1 == "view0")
        {
        setContentView(R.layout.activity_view0);
        }

        else if(str1 == "view1")
        {
        setContentView(R.layout.activity_view1);
        }
        else
        {
        setContentView(R.layout.activity_no_setup);
        }

    }

The code works if the user just quits the App, then relaunches it (Only tested it in the Simulator so far) but whenever I use the task manager to force quit the app like this:

The App just relaunches without using the SharedPreferences.
What’s the reason for the App to not load the SharedPreferences or is this just a simulator bug?

Answer 1

You can write

if(str1 != null && str1.equals("view0"))
        {
        setContentView(R.layout.activity_view0);
        }

        else if(str1 != null && str1.equals("view1"))
        {
        setContentView(R.layout.activity_view1);
        }
        else
        {
        setContentView(R.layout.activity_no_setup);
        }

try this, May be helpful for you……