RecyclerView適配器錯誤

MainFragment：RecyclerView適配器錯誤

public class MainFragment extends Fragment { 
RecyclerView listview; 
ListViewAdapter adapter; 
ProgressDialog mProgressDialog; 
ArrayList<HashMap<String, String>> arraylist; 
static String RANK = "rank"; 
static String COUNTRY = "country"; 
static String POPULATION = "population"; 
static String FLAG = "flag"; 
// URL Address 
String url = "http:"; 
public MainFragment() { 
    // Required empty public constructor 
} 
@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
         Bundle savedInstanceState) { 
    String x = "/aaa/bbb/omer/000"; 
    String []tokens = x.split("/aaa/bbb/"); 
    for (String t: tokens) 
    Toast.makeText(getActivity(), t, Toast.LENGTH_SHORT).show(); 

    View view =inflater.inflate(R.layout.fragment_main, container, false); 
    listview = (RecyclerView) view.findViewById(R.id.listview); 
    listview.setHasFixedSize(true); 
    LinearLayoutManager llm = new LinearLayoutManager(getContext()); 
    listview.setLayoutManager(llm); 
    new JsoupListView().execute(); 
    return view; 
} 

// Title AsyncTask 
private class JsoupListView extends AsyncTask<Void, Void, Void> { 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     // Create a progressdialog 
     mProgressDialog = new ProgressDialog(getActivity()); 
     // Set progressdialog title 
     mProgressDialog.setTitle("Diziler Yükleniyor"); 
     // Set progressdialog message 
     mProgressDialog.setMessage("Yükleniyor..."); 
     mProgressDialog.setIndeterminate(false); 
     // Show progressdialog 
     mProgressDialog.show(); 
    } 

    @Override 
    protected Void doInBackground(Void... params) { 
     // Create an array 
     arraylist = new ArrayList<HashMap<String, String>>(); 

     try { 
      // Connect to the Website URL 
      Document doc = Jsoup.connect(url).get(); 
      // Identify Table Class "worldpopulation" 
      for (Element table : doc.select("div[class=col-sm-12 col-xs-12 pad0 middle]")) { 

       // Identify all the table row's(tr) 
       for (Element row : table.select("div[class=col-sm-12 col-xs-12 pad0 streamingBoxWrap mNewsItem]:gt(0)")) { 
        HashMap<String, String> map = new HashMap<String, String>(); 

        // Identify all the table cell's(td) 
        Elements tds = row.select("a"); 

        // Identify all img src's 
        Elements imgSrc = row.select("img[src]"); 
        // Get only src from img src 
        String imgSrcStr = imgSrc.attr("src"); 

        Elements aSrc = row.select("a[href]:gt(1)"); 
        String aSrcStr = aSrc.attr("href"); 

        // Retrive Jsoup Elements 
        // Get the first td 
        map.put("rank", aSrcStr); 
        // Get the second td 
        map.put("country", tds.get(1).text()); 
        // Get the third td 
        map.put("population", tds.get(2).text()); 
        // Get the image src links 
        map.put("flag", imgSrcStr); 
        // Set all extracted Jsoup Elements into the array 
        arraylist.add(map); 
       } 
      } 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 

     return null; 
    } 

    @Override 
    protected void onPostExecute(Void result) { 
     // Locate the listview in listview_main.xml 
     // Pass the results into ListViewAdapter.java 

     adapter = new ListViewAdapter(getActivity(), arraylist); 

     listview.setAdapter(adapter); 
     listview.setItemAnimator(new DefaultItemAnimator()); 

     // Close the progressdialog 
     mProgressDialog.dismiss(); 
    } 
}

}

ListViewAdapter：

public class ListViewAdapter extends BaseAdapter { 

    // Declare Variables 
    Context context; 
    LayoutInflater inflater; 
    ArrayList<HashMap<String, String>> data; 
    ImageLoader imageLoader; 
    HashMap<String, String> resultp = new HashMap<String, String>(); 

    public ListViewAdapter(Context context,ArrayList<HashMap<String, String>> arraylist) { 
     this.context = context; 
     data = arraylist; 
     imageLoader = new ImageLoader(context); 
    } 



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

    @Override 
    public Object getItem(int position) { 
     return null; 
    } 

    @Override 
    public long getItemId(int position) { 
     return 0; 
    } 

    public View getView(final int position, View convertView, ViewGroup parent) { 
     // Declare Variables 
     final TextView rank; 
     TextView country; 
     TextView population; 
     ImageView flag; 

     inflater = (LayoutInflater) context 
       .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

     View itemView = inflater.inflate(R.layout.singleitemview, parent, false); 
     // Get the position 
     resultp = data.get(position); 

     // Locate the TextViews in listview_item.xml 
     // rank = (TextView) itemView.findViewById(R.id.rank); 
     country = (TextView) itemView.findViewById(R.id.country); 
     population = (TextView) itemView.findViewById(R.id.population); 

     // Locate the ImageView in listview_item.xml 
     flag = (ImageView) itemView.findViewById(R.id.flag); 

     // Capture position and set results to the TextViews 
     //rank.setText(resultp.get(MainFragment.RANK)); 
     country.setText(resultp.get(MainFragment.COUNTRY)); 
     population.setText(resultp.get(MainFragment.POPULATION)); 
     // Capture position and set results to the ImageView 
     // Passes flag images URL into ImageLoader.class 
     imageLoader.DisplayImage(resultp.get(MainFragment.FLAG), flag); 
     // Capture ListView item click 
     itemView.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View arg0) { 
       // Get the position 

       resultp = data.get(position); 
       DiziFragment myFragment3 = new DiziFragment(); 
       Bundle bundle = new Bundle(); 
       bundle.putString("gun",resultp.get(MainFragment.POPULATION)); 
       bundle.putString("flag",resultp.get(MainFragment.FLAG)); 
       myFragment3.setArguments(bundle); 
       android.support.v4.app.FragmentTransaction fragmentTransaction = ((FragmentActivity)context).getSupportFragmentManager().beginTransaction(); 
       fragmentTransaction.replace(R.id.fragment_container,myFragment3); 
       fragmentTransaction.commit(); 

      } 
     }); 
     return itemView; 
    } 
}

搖籃建立

我想列出具有recyclerview的項目。請幫幫我。

土耳其語：kodda listview ile liteliyordu ben ise recyclerview ile listelemek istiyorum。

編輯我的代碼適配器：

public class SimpleRecyclerAdapter extends RecyclerView.Adapter { 
Context context; 
LayoutInflater inflater; 
ArrayList<HashMap<String, String>> data; 
ImageLoader imageLoader; 
HashMap<String, String> resultp = new HashMap<String, String>(); 

public SimpleRecyclerAdapter(Context context,ArrayList<HashMap<String, String>> arraylist) { 
    this.context = context; 
    data = arraylist; 
    imageLoader = new ImageLoader(context); 
} 




@Override 
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, final int position) { 

    final TextView rank; 
    TextView country; 
    TextView population; 
    ImageView flag; 

    inflater = (LayoutInflater) context 
      .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 

    View itemView = inflater.inflate(R.layout.singleitemview, parent, false); 
    // Get the position 
    resultp = data.get(position); 

    // Locate the TextViews in listview_item.xml 
    // rank = (TextView) itemView.findViewById(R.id.rank); 
    country = (TextView) itemView.findViewById(R.id.country); 
    population = (TextView) itemView.findViewById(R.id.population); 

    // Locate the ImageView in listview_item.xml 
    flag = (ImageView) itemView.findViewById(R.id.flag); 

    // Capture position and set results to the TextViews 
    //rank.setText(resultp.get(MainFragment.RANK)); 
    country.setText(resultp.get(MainFragment.COUNTRY)); 
    population.setText(resultp.get(MainFragment.POPULATION)); 
    // Capture position and set results to the ImageView 
    // Passes flag images URL into ImageLoader.class 
    imageLoader.DisplayImage(resultp.get(MainFragment.FLAG), flag); 
    // Capture ListView item click 
    itemView.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // Get the position 

      resultp = data.get(position); 
      DiziFragment myFragment3 = new DiziFragment(); 
      Bundle bundle = new Bundle(); 
      bundle.putString("gun",resultp.get(MainFragment.POPULATION)); 
      bundle.putString("flag",resultp.get(MainFragment.FLAG)); 
      myFragment3.setArguments(bundle); 
      android.support.v4.app.FragmentTransaction fragmentTransaction = ((FragmentActivity)context).getSupportFragmentManager().beginTransaction(); 
      fragmentTransaction.replace(R.id.fragment_container,myFragment3); 
      fragmentTransaction.commit(); 

     } 
    }); 
    return null; 
} 

@Override 
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 

} 

@Override 
public int getItemCount() { 
    return 0; 
}

}

回報ItemView控件;是eroor

來源

2016-02-03 Ömer Büyükçelik

您正在向您的適配器輸入recyclerview。 –

RecyclerView listview;這是？ –

你把什麼放在fragment_main.xml中？ RecyclerView或ListView？ – Blackbelt

如果您正在使用回收視圖，那麼您的適配器還應擴展回收站視圖，而不是基本適配器。例如。

public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.CustomViewHolder> { 
    private List<FeedItem> feedItemList; 
    private Context mContext; 

    public MyRecyclerAdapter(Context context, List<FeedItem> feedItemList) { 
     this.feedItemList = feedItemList; 
     this.mContext = context; 
    } 

    @Override 
    public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) { 
     View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_row, null); 

     CustomViewHolder viewHolder = new CustomViewHolder(view); 
     return viewHolder; 
    } 

    @Override 
    public void onBindViewHolder(CustomViewHolder customViewHolder, int i) { 
     FeedItem feedItem = feedItemList.get(i); 

     //Download image using picasso library 
     Picasso.with(mContext).load(feedItem.getThumbnail()) 
       .error(R.drawable.placeholder) 
       .placeholder(R.drawable.placeholder) 
       .into(customViewHolder.imageView); 

     //Setting text view title 
     customViewHolder.textView.setText(Html.fromHtml(feedItem.getTitle())); 
    } 

    @Override 
    public int getItemCount() { 
     return (null != feedItemList ? feedItemList.size() : 0); 
    } 
}

來源

2016-02-03 14:00:10

我的代碼編輯請。我失敗 –

http://javatechig.com/android/android-recyclerview-example按照此鏈接完整實施 –

謝謝你看我回答請。 –

RecyclerView適配器錯誤

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