Android 在恢复主要活动时更新TextView

在下面提供的代码中，我想在从play intent恢复时刷新我的文本视图。但每当我试图在OnCreate之外，但在静态int分数之后在主类内部定义textview时，我的应用程序就会崩溃

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);
            }
        });

试试这个：

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);
            }
        });

试试这个：

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);
            }
        });

---

我首先要添加super.onResume；：

@Override
protected void onResume(){
    super.onResume();
    // The rest
}

我还要删除以下内容：

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

从onCreate，并将其添加到onResume，因为每次调用onCreate时，也会调用onResume

---

另外，从public改为protected onResume

我首先要添加super.onResume；：

@Override
protected void onResume(){
    super.onResume();
    // The rest
}

我还要删除以下内容：

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

从onCreate，并将其添加到onResume，因为每次调用onCreate时，也会调用onResume

---

还可以从public更改为protected onResume

为刷新添加崩溃日志和onResume代码为刷新添加崩溃日志和onResume代码欢迎朋友！！！，如果它起作用，那么接受作为其他人的答案帮助寻找相同的问题。谢谢你的朋友！！！，如果它是工作，然后接受作为其他人的答案帮助寻找相同的问题。谢谢