Update a TextView on resuming main activity

Question

Friends in this code provided below, i want to refresh my text view upon resume from play intent. But whenever i try to define my textview out of OnCreate but inside my main class (after static int score), my app crashes.

public class MainProjectActivity extends Activity {
    /** Called when the activity is first created. */

    static int Score = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        //Display Scores
        final TextView displayScores = (TextView)findViewById(R.id.scoreDisplay);
        displayScores.setText("Your Score : "+ Score);

        //Play Game button activity
        Button gameButton = (Button)findViewById(R.id.PlayButton);
        gameButton.setOnClickListener(new OnClickListener() {

            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent play = new Intent(getApplicationContext(), com.sample.game.PlayScreen.class);
                startActivity(play);
            }
        });

Answer 1

try this:

public class MainProjectActivity extends Activity {
    /** Called when the activity is first created. */
TextView displayScores;
    static int Score = 0;
@Override
protected void onResume(){
    super.onResume();
    // code to update the date here
    displayScores.setText("Your Score : "+ Score);

}
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        //Display Scores
        displayScores = (TextView)findViewById(R.id.scoreDisplay);
        displayScores.setText("Your Score : "+ Score);

        //Play Game button activity
        Button gameButton = (Button)findViewById(R.id.PlayButton);
        gameButton.setOnClickListener(new OnClickListener() {

            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                Intent play = new Intent(getApplicationContext(), com.sample.game.PlayScreen.class);
                startActivity(play);
            }
        });