Java 使用ViewPager/PagerAdapter更改字符串

我有一个JSON请求，它从YouTube获得响应：

@Override
   protected Void doInBackground(Void... arg0) {
       try {

         HttpClient client = new DefaultHttpClient();

         HttpUriRequest request = new HttpGet("https://gdata.youtube.com/feeds/api/videos?author="+PLAYLIST+"&v=2&alt=jsonc");

我想使用可滑动的页脚图像来更改字符串播放列表的值。我主要关心的是如何使用如下所示的设置：

String PLAYLIST = "vevo";
String PLAYLIST = "TheMozARTGROUP‎";
String PLAYLIST = "TimMcGrawVEVO‎";
String PLAYLIST = "TiestoVEVO‎";
String PLAYLIST = "EminemVEVO‎";

然后，在设置播放列表的值后，立即使用播放列表的新值创建播放列表：

new GetYouTubeUserVideosTask(responseHandler, PLAYLIST).execute();

我已经创建了一个新的字符串数组，其中包含我想要使用的值。现在我的问题是：我如何修改下面的源代码，使用其中一个数组值设置播放列表的值，并执行新的播放列表？目前，我的源代码已编译，但当我滑动时，什么也没有发生

new GetYouTubeUserVideosTask(responseHandler, PLAYLIST).execute();

当前不起作用的寻呼机适配器：

截图：

其他信息：

尝试研究并更改代码，以遵循在调用“notifyDataSetChanged”之前更新“UpdateBanas”listArray的示例。调用notify是更新正在使用的适配器中的视图的信号

在您的代码中，getYouTube。。。需要更新适配器引用的数组对象

---

您应该能够通过在代码中实现来自示例的相同连接来获得它

谢谢！我研究了它并尝试实现它。。。但是我有点麻烦-介意看一眼吗？

private class ImagePagerAdapter extends PagerAdapter {
        public ImagePagerAdapter(Activity act, int[] mImages,
                String[] stringArra) {
            imageArray = mImages;
            activity = act;
            stringArray = stringArra;
        }

        // this is your constructor
        public ImagePagerAdapter() {
            super();
            // setOnPageChangeListener(mPageChangeListener);
        }

        private int[] mImages = new int[] { R.drawable.selstation_up_btn,
                R.drawable.classical_up_btn, R.drawable.country_up_btn,
                R.drawable.dance_up_btn, R.drawable.hiphop_up_btn };

        private String[] stringArray = new String[] { "vevo",
                "TheMozARTGROUP‎", "TimMcGrawVEVO‎", "TiestoVEVO‎",
                "EminemVEVO‎" };

        @Override
        public int getCount() {
            return mImages.length;
        }

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

        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            Context context = Home.this;
            ImageView imageView = new ImageView(context);

            imageView.setImageResource(mImages[position]);
            ((ViewPager) container).addView(imageView, 0);
            return imageView;
        }

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

        private final ViewPager.SimpleOnPageChangeListener mPageChangeListener = new ViewPager.SimpleOnPageChangeListener() {

            @Override
            public void onPageSelected(final int position) {
                onTabChanged(mPager.getAdapter(), mCurrentTabPosition, position);
                mCurrentTabPosition = position;

            }
        };

        protected void onTabChanged(final PagerAdapter adapter,
                final int oldPosition, final int newPosition) {
            // Calc if swipe was left to right, or right to left
            if (oldPosition > newPosition) {
                // left to right
            } else {
                // right to left

                View vg = findViewById(R.layout.home);
                vg.invalidate();
            }
            final ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);

            viewPager.setOnPageChangeListener(new OnPageChangeListener() {

                int oldPos = viewPager.getCurrentItem();

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

                    if (position > oldPos) {
                        // Moving to the right

                    } else if (position < oldPos) {
                        // Moving to the Left

                        View vg = findViewById(R.layout.home);
                        vg.invalidate();
                    }
                }

                @Override
                public void onPageScrollStateChanged(int arg0) {
                    // TODO Auto-generated method stub

                }

                @Override
                public void onPageSelected(int arg0) {
                    // TODO Auto-generated method stub

                }

            });

        }
    }
}