Question

我有一个包含json新闻的列表视图。
目前OnItemClickListener打开一项新活动，其中包含有关新闻的更多详细信息。 我想要的现在是使用viewpager 打开一项活动，该活动允许用户点击一个项目而不是点击新闻返回列表视图以选择新项目。

然而，点击列表项应该打开相应的viewpager项目，例如，如果我点击列表视图中的项目3，我会看到一个带有项目3的新闻文章的寻呼机，然后我可以向前滑动到项目4,5,6等或返回项目2,1,0 以下是我目前的代码

有新闻列表的片段

public class Feed extends Fragment{
private List<DataModel> mDataList;
private class DataModel {
    private String sFeedTitle;
    private String sFeedDate;
    private String sFeedAuthor;
    private String sFeedTag;
    private String sFeedImage;
    private String sFeedImageAuthor;
    private String sFeed;

    // All getters and setters are here
    }
    @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
       Bundle savedInstanceState) { 
       View rootView = inflater.inflate(R.layout.news_list, container, false);
       return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);        
    super.onCreate(savedInstanceState);

    mListView = (ListView) getView().findViewById(R.id.ListView01);
    mProgress = (ProgressBar) getView().findViewById(R.id.progressBar);
    makeSampleHttpRequest();
    }

    private void makeSampleHttpRequest() {
    // Get data from the internet and set the model
    }

    private  class MyAdapter extends BaseAdapter {
     private LayoutInflater mInflater;

   public EfficientAdapter(Context context) {
       mInflater = LayoutInflater.from(context);
   }

   public int getCount() {
       return mDataList.size();
   }

   public Object getItem(int position) {
       return position;
   }

   public long getItemId(int position) {
       return position;
   }

   public View getView(final int position, View convertView, ViewGroup parent) {
       ViewHolder holder;
        //All view holder code
         mListView.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1,
                    int pos, long arg3) {
                    Intent i = new Intent(getActivity(), ActivityFeed.class);
                    i.putExtra("FeedTitle", (mDataList.get(pos).getsFeedTitle()));
                    i.putExtra("FeedArticle", (mDataList.get(pos).getsFeed()));
                    i.putExtra("FeedImage", (mDataList.get(pos).getsFeedImage()));
                    i.putExtra("FeedAuthor", (mDataList.get(pos).getsFeedAuthor()));
                    i.putExtra("FeedDate", (mDataList.get(pos).getsFeedDate()));
                    startActivity(i);
                    // This is what is currently doing but instead of this i need to open an activity with a viewpager which allows swiping through all the news in the list. I am familiar with with implimenting a viewpager with static views an content like the one below
                }
       }
    }
}

包含静态视图的Viewpager 我如何修改它以使其符合我的需要

public class ViewPagerExample extends FragmentActivity {
private MyAdapter mAdapter;
private ViewPager mPager;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    mAdapter = new MyAdapter(getSupportFragmentManager());

    mPager = (ViewPager) findViewById(R.id.pager);
    mPager.setAdapter(mAdapter);
}

public static class MyAdapter extends FragmentPagerAdapter {
    public MyAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public int getCount() {
        return 3;
    }

    @Override
    public Fragment getItem(int position) {
        switch (position) {
        case 0:
            return new Fragment1();
        case 1:
            return new Fragment2();
        case 2:
            return new Fragment3();

        default:
            return null;
        }
    }
}
}

Answer 1

首先，您需要设置ViewPager页面的大小。例如，将其置于意图：

Intent i = new Intent(getActivity(), ActivityFeed.class);
i.putExtra("FeedTitle", (mDataList.get(pos).getsFeedTitle()));
i.putExtra("FeedArticle", (mDataList.get(pos).getsFeed()));
i.putExtra("FeedImage", (mDataList.get(pos).getsFeedImage()));
i.putExtra("FeedAuthor", (mDataList.get(pos).getsFeedAuthor()));
i.putExtra("FeedDate", (mDataList.get(pos).getsFeedDate()));
i.putExtra("PagesCount",mDataList.size());
startActivity(i);

在活动方面阅读它们：

int pagesCount = getIntent().getIntExtra("PagesCount");

初始化适配器。

mAdapter = new MyAdapter(getSupportFragmentManager(), pagesCount);

这是正确的初始化。但我认为你也需要一个数据。因此，请阅读Parcelable以将数据从一个Activity发送到另一个Activity。当你得到它 - 这里没有问题实现显示机制。

从listview项目单击打开视图寻呼机

1 个答案: