Android ViewPager更新数据

ViewPager也是一个常用的组件 与ListView类似 当绑定数据后 想刷新数据 需要在适配器中添加如下方法

protected PagerAdapter galleryAdapter = new PagerAdapter() {

        @Override
        public boolean isViewFromObject(View arg0, Object arg1) {
             return arg0 == ((View)arg1);
        }

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

        @Override
        public Object instantiateItem(View container, int position) {
            return bindGalleryAdapterItemView(container, position);
        }

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

        @Override
        public void finishUpdate(View arg0) {}  

        @Override
        public void restoreState(android.os.Parcelable state, ClassLoader loader) {

        };

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

        @Override
        public void startUpdate(View arg0) {}  

        @Override
        public int getItemPosition(Object object) {
　　　　　　　//POSITION_NONE 是一个PagerAdapter的内部常量，值是-2，
            return POSITION_NONE;
        }

    };

以后有空写个专栏总结一下 http://stackoverflow.com/questions/7263291/viewpager-pageradapter-not-updating-the-view