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我想每 1 秒更改一次 DialogFragment 内的 ImageView 图像；代码在 android 5 或 4 中运行正常。但在 android 2.3.7 (api 10) 中，它更改了一次 ui，然后不再更改 ui。同时线程到目前为止运行正常，我尝试了带有 Timer 的处理程序消息方法，处理程序正常方法，runOnUIThread。View.Post 方法但没有运气

Bitmap[] onItems = new Bitmap[3];
Bitmap[] offItems= new Bitmap[3];
ImageView[] cheatHoldrs = new ImageView[3];
public Dialog onCreateDialog(Bundle savedInstanceState) {


//all Bitmaps and ImageView has been inited
myMethod();


}

View.Post 方法：

for (int i = 0; i < 3; i++) {
        final int j = i;
        cheatHoldrs[j].post(new Runnable() {

            @Override
            public void run() {
                random Random = new Random();
                cheatHoldrs[j].setImageBitmap((random.nextInt(3) % 3 == 1) ? onItems[j]
                        : offItems[j]);
                cheatHoldrs[j].postDelayed(this, 1000);

            }
        });
    }

RunOnUIThread

getActivity().runOnUiThread(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub


            Random random = new Random();
            for (int j = 0; j < 3; j++)
                cheatHoldrs[j]
                        .setImageBitmap((random.nextInt(3) % 3 == 1) ? onItems[j]
                                : offItems[j]);
            new Handler().postDelayed(this, 1000);
        }
    });

Noraml 处理程序方法：

    final Handler handler = new Handler();
    handler.post(new Runnable() {

        @Override
        public void run() {
        Random random = new Random();
            for (int j = 0; j < 3; j++)
                cheatHoldrs[j]
                        .setImageBitmap((random.nextInt(3) % 3 == 1) ? onItems[j]
                                : offItems[j]);
            handler.postDelayed(this, 1000);    
        }
    });

处理程序消息方法：{在全局范围内：

public Handler mHandler = new Handler() {
    public void handleMessage(Message msg) {
        Random random = new Random();
        for (int j = 0; j < 3; j++)
            cheatHoldrs[j]
                    .setImageBitmap((random.nextInt(3) % 3 == 1) ? onItems[j]
                            : offItems[j]);
    }
};

在 OnCreateDialog 中：

Timer timer = new Timer();
    timer.scheduleAtFixedRate(new TimerTask() {
        public void run() {
            mHandler.obtainMessage(1).sendToTarget();

        }
    }, 0, 1000);

}

编辑：我终于知道问题是什么了。线程工作正常，如果我不使用动画，ui 更新。当对话框开始显示时。我开始动画并移动 ImageViews (cheatHoldrs) 。ImageViews 动画后图像没有变化。我像这样尝试了 9oldroid 动画和 TranslateAnimation，但在动画之后仍然改变 ui：对于 api > 11，我使用 ObjectAnimator，它工作正常，但对于 api < 11，我使用这种方法

        TranslateAnimation animation = new TranslateAnimation(0, forLeft, 0, 0);
    animation.setFillAfter(true);
    animation.setDuration(1000);

    cheatHoldrs[1].startAnimation(animation);
    TranslateAnimation animation2 = new TranslateAnimation(0, forLeft, 0, 0);
    animation2.setFillAfter(true);
    animation2.setDuration(1000);

    cheatHoldrs[2].startAnimation(animation2);

    TranslateAnimation animation3 = new TranslateAnimation(0, forRight, 0, 0);
    animation3.setFillAfter(true);
    animation3.setDuration(1000);

    cheatHoldrs[0].startAnimation(animation3);

和 Nineoldandroids 方法：

    com.nineoldandroids.animation.ObjectAnimator transitionForFirst = com.nineoldandroids.animation.ObjectAnimator
            .ofFloat(cheatHoldrs[0], "translationX", forRight);
    transitionForFirst.setDuration(1000);

    com.nineoldandroids.animation.ObjectAnimator transitionForSecound = com.nineoldandroids.animation.ObjectAnimator
            .ofFloat(cheatHoldrs[1], "translationX", forLeft);
    transitionForSecound.setDuration(1000);

    com.nineoldandroids.animation.ObjectAnimator transitionForThird = com.nineoldandroids.animation.ObjectAnimator
            .ofFloat(che

atHoldrs[2], "translationX", forLeft);
        transitionForThird.setDuration(1000);

        transitionForFirst.start();
        transitionForSecound.start();
        transitionForThird.start();
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