java - 如何解决Android中图像 slider 移动过快的问题？

Question

在我的 Android 项目中，我创建了一个图像 slider 。图像 slider 包含两个图像，滑动时长为 5000 毫秒，图像停留时间为 5000 毫秒。

下面是我介绍的设置图片滑动的方法-

     private void init() {
        final float density = 
        mContext.getResources().getDisplayMetrics().density;

        mPager.setAdapter(new SlidingImage_Adapter(mContext,coverImageList));

        indicator.setRadius(5 * density);
        NUM_PAGES =coverImageList.size();

        final Handler handler = new Handler();
        final Runnable Update = new Runnable() {
            public void run() {
                if (currentPage == NUM_PAGES) {
                    currentPage = 0;
                }
                mPager.setCurrentItem(currentPage++, true);
            }
        };
        Timer swipeTimer = new Timer();
        swipeTimer.schedule(new TimerTask() {
            @Override
            public void run() {
                handler.post(Update);
            }
        }, 5000, 5000);

        indicator.setOnPageChangeListener(new 
        ViewPager.OnPageChangeListener() {

            @Override
            public void onPageSelected(int position) {
                currentPage = position;

            }

            @Override
            public void onPageScrolled(int pos, float arg1, int arg2) {
            }

            @Override
            public void onPageScrollStateChanged(int pos) {
            }
        });

    }

这是我用来设置图像 slider 适配器的适配器类 -

SlidingImage_Adapter.java

public class SlidingImage_Adapter extends PagerAdapter {


    private List<ModelBanner> imageModelArrayList;
    private LayoutInflater inflater;
    private Context context;


    public SlidingImage_Adapter(Context context, List<ModelBanner> imageModelArrayList) {
        this.context = context;
        this.imageModelArrayList = imageModelArrayList;
        inflater = LayoutInflater.from(context);
    }

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        container.removeView((View) object);
    }

    @Override
    public int getCount() {
        return imageModelArrayList.size();
    }

    @Override
    public Object instantiateItem(ViewGroup view, int position) {
        View imageLayout = inflater.inflate(R.layout.slidingimages_layout, view, false);

        assert imageLayout != null;
        final ImageView imageView = (ImageView) imageLayout
                .findViewById(R.id.image);


        Picasso.with(context).load(imageModelArrayList.get(position).getImagePath()).into(imageView);

        view.addView(imageLayout, 0);

        return imageLayout;
    }

    @Override
    public boolean isViewFromObject(View view, Object object) {
        return view.equals(object);
    }

    @Override
    public void restoreState(Parcelable state, ClassLoader loader) {
    }

    @Override
    public Parcelable saveState() {
        return null;
    }
}

现在，问题是，我的 Activity 中有一个滑动刷新。因此，当我滑动屏幕刷新时，图像 slider 的行为方式有所不同。图像移动速度非常快，不遵循设置的延迟和周期时间。

我不知道为什么会出现这个问题以及如何解决这个问题。因此，如果有人发现问题并提出解决方案，那就太好了。

Answer 1

引入设置图像滑动:

 private void init() {
    final float density = 
    mContext.getResources().getDisplayMetrics().density;

    mPager.setAdapter(new SlidingImage_Adapter(mContext,coverImageList));

    indicator.setRadius(5 * density);
    NUM_PAGES =coverImageList.size();

    final Handler handler = new Handler();
    final Runnable Update = new Runnable() {
        public void run() {
            if (currentPage == NUM_PAGES) {
                currentPage = 0;
            }
            mPager.setCurrentItem(currentPage++, true);
        }
    };
    Timer swipeTimer = new Timer();
    swipeTimer.schedule(new TimerTask() {
        @Override
        public void run() {
            handler.post(Update);
        }
    }, 5000, 5000);

    indicator.setOnPageChangeListener(new 
    ViewPager.OnPageChangeListener() {

        @Override
        public void onPageSelected(int position) {
            currentPage = position;

        }

        @Override
        public void onPageScrolled(int pos, float arg1, int arg2) {
        }

        @Override
        public void onPageScrollStateChanged(int pos) {
        }
    });

}