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Question

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我有一个麻烦和棘手的活动，其中： -IF这是第一次打开应用程序，它将setContentView设置为名为flipper的布局，并且 -ELSE如果启动转到活动MainPage.Class

的意图

现在，应用程序启动正常，但是鳍状肢布局在无限循环中每两秒左右一次又一次地加载

我的活动如下：

public class Tutorial extends MainActivity{

private ViewFlipper viewFlipper;
private float lastX;
private Tutorial mContext;
private static final int SWIPE_MIN_DISTANCE = 120;
private static final int SWIPE_THRESHOLD_VELOCITY = 200;
SharedPreferences prefs = null;

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

    prefs = getSharedPreferences("yo.laststage", MODE_PRIVATE);
}

@Override
protected void onResume() {
    super.onResume();

    if (prefs.getBoolean("firstrun", true)) {

        class SwipeGestureDetector extends GestureDetector.SimpleOnGestureListener {
            @Override
            public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
                try {
                    // right to left swipe
                    if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                        viewFlipper.setInAnimation(AnimationUtils.loadAnimation(mContext, R.anim.in_from_left));
                        viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(mContext, R.anim.out_to_left));
                        viewFlipper.showNext();
                        return true;
                    } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {
                        viewFlipper.setInAnimation(AnimationUtils.loadAnimation(mContext, R.anim.in_from_right));
                        viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(mContext,R.anim.out_to_right));
                        viewFlipper.showPrevious();
                        return true;
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }

                return false;
            }
        }


        prefs.edit().putBoolean("firstrun", false).commit();

        Intent i = new Intent(Tutorial.this, MainPage.class);
        this.startActivity(i);

    }
}

}

可能出现什么问题？