Question

我在android中创建一个列表。那就是我从服务器获取列表并将其添加到ArrayList。之后，我创建了一个适配器来显示列表，但问题是我在列表中有两个值，但ListView只显示了一个项目。我检查了很多。我检查了适配器。它共有2个项目，但只显示1.为什么会出现这个问题。请帮忙。

//从服务器提取列表

  JSONArray askArray = response.getJSONArray("data");

                        if (askArray.length() > 0) {

                            final ArrayList<HashMap<String, String>> cameraList = new ArrayList<HashMap<String, String>>();
                            for (int i = 0; i < askArray.length(); i++) {
                                JSONObject cameraObject = askArray.getJSONObject(i);
                                //Log.e("TAG", "onResponse: "+cameraObject.getString("description"));
                                HashMap<String, String> store = new HashMap<String, String>();
                                store.put(KEY_DESCRIPTION, cameraObject.getString("description"));
                                cameraList.add(store);
                            }

// listview的适配器

    public class AdapterTermsNConditions extends BaseAdapter {


private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater = null;
private Context context;
AskFormFragment askFormFragment;
HashMap<String, String> officeList1;


public AdapterTermsNConditions(Activity a, ArrayList<HashMap<String, String>> d, AskFormFragment askFormFragment) {
    activity = a;
    data = d;
    inflater = (LayoutInflater) activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    this.askFormFragment = askFormFragment;

}

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

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

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

public View getView(int position, View convertView, ViewGroup parent) {

    View itemView = inflater.inflate(R.layout.item_terms_conditions, parent, false);

    Log.e("position", +position+"");

    TextView txtTerms = (TextView) itemView.findViewById(R.id.txtTerms);


    officeList1 = new HashMap<String, String>();
    officeList1 = data.get(position);
    Log.e("termsList", officeList1.toString() +  "" +position);


    txtTerms.setText(officeList1.get(AskFormFragment.KEY_DESCRIPTION));

    Log.e("TAG", "terms_size: "+data.toString() );

    return itemView;
}


}

Answer 1

您可以尝试下面的

从服务器提取列表

   List<CamaraModel> listValue= new ArrayList<>();

    Array askArray = response.getJSONArray("data");
    if (askArray.length() > 0) {


      for (int i = 0; i < askArray.length(); i++) {
        JSONObject cameraObject = askArray.getJSONObject(i);
        //Log.e("TAG", "onResponse: "+cameraObject.getString("description"));
        CamaraModel model = new CamaraModel();
        model.setDescription(cameraObject.getString("description"));
        listValue.add(model);
    }
}

CustomListViewAdapter adapter = new CustomListViewAdapter(AccountBalanceInfo.this, listValue);

listView.setAdapter(adapter);

您应该使用类似

的模型

public class CamaraModel {
 private String description;

 public String getDescription() {
 return description;
 }

  public void setDescription(String description) {
   this.description = description;
   }
}

创建布局xml名称test_row.xml＆amp;粘贴

  <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
 android:layout_height="wrap_content" >  

   <TextView
      android:id="@+id/tv_descripton"
     android:layout_width="match_parent"
     android:layout_height="match_parent"         
     android:textStyle="bold"
     android:paddingLeft="2dp"
     android:textSize="16sp"
     android:paddingBottom="5dp"
     android:text="description"
     android:paddingTop="5dp"/>    

  </LinearLayout>

最后你使用像

这样的适配器

        public class CustomListViewAdapter extends ArrayAdapter<CamaraModel> {

       // View lookup cache

   private  class ViewHolder {

      TextView description;


   }



   public CustomListViewAdapter(Context context, List<CamaraModel> loandAmomount) {

      super(context, R.layout.test_row, loandAmomount);

  }



 @Override

 public View getView(int position, View convertView, ViewGroup parent) {

    // Get the data item for this position

    CamaraModel model = getItem(position);

    CustomListViewAdapter.ViewHolder viewHolder; // view lookup cache stored in tag

    if (convertView == null) {

        viewHolder = new CustomListViewAdapter.ViewHolder();

        LayoutInflater inflater = LayoutInflater.from(getContext());

        convertView = inflater.inflate(R.layout.test_row, parent, false);

        viewHolder.description = (TextView) convertView.findViewById(R.id.description);


        convertView.setTag(viewHolder);

    } else {

        viewHolder = (CustomListViewAdapter.ViewHolder) convertView.getTag();

    }

    // Populate the data into the template view using the data object

    viewHolder.description.setText(model.getDescription());


    // Return the completed view to render on screen

    if (position%2== 0) {
        convertView.setBackgroundColor(Color.parseColor("#F5EEE5"));
    }else{

        convertView.setBackgroundColor(Color.parseColor("#FFFFFF"));
    }

    return convertView;

  }

 }

无法在Android中的ListView中获取所有值

1 个答案: