从Surfaceview类

Question

我已经声明了一个像这样的全局int计数器变量：

public class GamePanel extends SurfaceView implements SurfaceHolder.Callback{
public int counter = 0;

我正在更新其值onclick：

public boolean onTouchEvent(MotionEvent event) {
    int x = (int) event.getX();
    int y = (int) event.getY();
    for (Balloon aMBalloonArray : mBalloonArray) {
        if (aMBalloonArray.isCollition(x, y)) {
            aMBalloonArray.reposition();
            popSound.start();
            counter = counter + 1;
            Log.d("GamePanel", "Score:" + counter);
        }
    }
    return super.onTouchEvent(event);
}

我使用此方法获取值：

public int getCounter() {
    return counter;
}

但它显示0而不是更新的值。你能告诉我该怎么做以及如何显示更新的变量。提前谢谢。

调用getcounter（）：

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    //set to full screen
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.final_score);


    String score = getIntent().getStringExtra("SCORE");
    finalScoreTextView = (TextView)findViewById(R.id.final_score);
    gamePanel = new GamePanel(this);
    finalScoreTextView.setText(gamePanel.getCounter());
    finalScoreTextView.invalidate();
}