所有这些解决办法对我都没有帮助。于是我找到了一个可行的解决方案: 您可以每次都设置适配器，但这是不够的。 在更换适配器之前，你应该做这些事情:

FragmentManager fragmentManager = slideShowPagerAdapter.getFragmentManager();
FragmentTransaction transaction = fragmentManager.beginTransaction();
List<Fragment> fragments = fragmentManager.getFragments();
for (Fragment f : fragments) {
    transaction.remove(f);
}
transaction.commit();

在这之后:

viewPager.setAdapter(adapter);

感谢瑞。阿劳霍和阿尔瓦罗路易斯布斯塔曼特。首先，我尝试使用rui。阿劳霍的方法，因为很简单。它可以工作，但当数据发生变化时，页面会明显重绘。这很糟糕，所以我试着用布斯塔曼特的方法。它是完美的。代码如下:

@Override
protected void onStart() {
    super.onStart();
}

private class TabPagerAdapter extends PagerAdapter {
    @Override
    public int getCount() {
        return 4;
    }

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

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

    @Override
    public Object instantiateItem(final ViewGroup container, final int position) {
        final View view = LayoutInflater.from(
                getBaseContext()).inflate(R.layout.activity_approval, null, false);
        container.addView(view);
        ListView listView = (ListView) view.findViewById(R.id.list_view);
        view.setTag(position);
        new ShowContentListTask(listView, position).execute();
        return view;
    }
}

当数据发生变化时:

for (int i = 0; i < 4; i++) {
    View view = contentViewPager.findViewWithTag(i);
    if (view != null) {
        ListView listView = (ListView) view.findViewById(R.id.list_view);
        new ShowContentListTask(listView, i).execute();
    }
}

1.首先，您必须在Pageradapter类中设置getItemposition方法 2.您必须阅读您的视图寻呼机的确切位置 3.然后将该位置作为新位置的数据位置发送 4.在setonPageChange监听器中写入更新按钮的点击监听器

我修改了程序代码，只设置了特定的位置元素

public class MyActivity extends Activity {

private ViewPager myViewPager;
private List<String> data;
public int location=0;
public Button updateButton;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    data = new ArrayList<String>();
    data.add("A");
    data.add("B");
    data.add("C");
    data.add("D");
    data.add("E");
    data.add("F");

    myViewPager = (ViewPager) findViewById(R.id.pager);
    myViewPager.setAdapter(new MyViewPagerAdapter(this, data));

      updateButton = (Button) findViewById(R.id.update);

    myViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
        @Override
        public void onPageScrolled(int i, float v, int i2) {
             //Toast.makeText(MyActivity.this, i+"  Is Selected  "+data.size(), Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onPageSelected( int i) {
          // here you will get the position of selected page
            final int k = i;
             updateViewPager(k);

        }

        @Override
        public void onPageScrollStateChanged(int i) {

        }
    });
}

private void updateViewPager(final int i) {  
    updateButton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {

            Toast.makeText(MyActivity.this, i+"  Is Selected  "+data.size(), Toast.LENGTH_SHORT).show();
            data.set(i, "Replaced "+i);         
            myViewPager.getAdapter().notifyDataSetChanged();
        }
    });

}

private class MyViewPagerAdapter extends PagerAdapter {

    private List<String> data;
    private Context ctx;

    public MyViewPagerAdapter(Context ctx, List<String> data) {
        this.ctx = ctx;
        this.data = data;
    }

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

    @Override
    public int getItemPosition(Object object) {
        return POSITION_NONE;
    }

    @Override
    public Object instantiateItem(View collection, int position) {          

        TextView view = new TextView(ctx);
        view.setText(data.get(position));
        ((ViewPager)collection).addView(view);            
        return view;
    }

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

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

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

    @Override
    public void restoreState(Parcelable arg0, ClassLoader arg1) {
    }

    @Override
    public void startUpdate(View arg0) {
    }

    @Override
    public void finishUpdate(View arg0) {
    }
}
}

alvarolb给出的答案绝对是最好的方法。基于他的回答，实现这一点的一个简单方法是简单地按位置存储活动视图:

SparseArray<View> views = new SparseArray<View>();

@Override
public Object instantiateItem(View container, int position) {
    View root = <build your view here>;
    ((ViewPager) container).addView(root);
    views.put(position, root);
    return root;
}

@Override
public void destroyItem(View collection, int position, Object o) {
    View view = (View)o;
    ((ViewPager) collection).removeView(view);
    views.remove(position);
    view = null;
}

然后，一旦覆盖notifyDataSetChanged方法，您就可以刷新视图…

@Override
public void notifyDataSetChanged() {
    int key = 0;
    for(int i = 0; i < views.size(); i++) {
       key = views.keyAt(i);
       View view = views.get(key);
       <refresh view with new data>
    }
    super.notifyDataSetChanged();
}

实际上，您可以在instantiateItem和notifyDataSetChanged中使用类似的代码来刷新视图。在我的代码中，我使用了完全相同的方法。

我知道我迟到了，但还是能帮到别人。我只是扩展了接受的答案，我也添加了评论。

答案本身说明它是低效的

为了让它只在需要时刷新，你可以这样做

private boolean refresh;

public void refreshAdapter() {
    refresh = true;
    notifyDataSetChanged();
}

@Override
public int getItemPosition(@NonNull Object object) {
    if (refresh) {
        refresh = false;
        return POSITION_NONE;
    } else {
        return super.getItemPosition(object);
    }
}

一个更简单的方法:使用FragmentPagerAdapter，并将页面视图包装到片段上。它们确实会更新