为什么复选框列表中的项目不出现

我刚刚创建了一个警报通过单击列表视图中的项目显示的对话框，我认为创建了一个Recycler Adapter包含一个checl框项目警报对话框显示不错，但没有复选框项目I不知道为什么它不给我任何错误，因为它显示像enter image description here 为什么复选框列表中的项目不出现

这是调用回收适配器类

private static void setPiking(String modeCode) { 
    RecyclerView modifierItemList; 
    Button OkBtn, CancelBtn; 
    LayoutInflater inflater2 = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE); 
    View view2 = inflater2.inflate(R.layout.modifier_list, null); 
    modifierItemList = (RecyclerView) view2.findViewById(R.id.modifierList); 
    OkBtn = (Button) view2.findViewById(R.id.okBtn90); 
    CancelBtn = (Button) view2.findViewById(R.id.cancelBtn90); 
    final AlertDialog.Builder builder1 = new AlertDialog.Builder(new ContextThemeWrapper(context, R.style.myDialog)); 

    ModGroubeCode = Integer.parseInt(modeCode); 
    String Sql = "SELECT dbo.Items.Code, dbo.Items.Name FROM dbo.Items"; 
    ResultSet RS = ConnectionClass.Ret_RS(Sql); 
    try { 

      ArrayList<ItemsListsModel> modifierArrayList = new ArrayList<ItemsListsModel>(); 
      while (RS.next()) { 

       builder1.setMessage("Modifier Group :- " + RS.getString("ModifierGroup_Name")); 
       String name = RS.getString("Name"); 
       String id = RS.getString("Code"); 
       TreeMap<String, Object> arr = new TreeMap<String, Object>(); 



       ItemsListsModel itemsListsModel = new ItemsListsModel(id, name, arr); 
       modifierArrayList.add(itemsListsModel); 
      } 
      adapter = new RecycleAdapterDialogModifier(context, modifierArrayList); 
      modifierItemList.setAdapter(adapter); 

     builder1.setView(view2); 
     builder1.setCancelable(true); 

     final AlertDialog alert11 = builder1.create(); 

     OkBtn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

      } 
     }); 

     CancelBtn.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       alert11.dismiss(); 
      } 
     }); 


     alert11.show(); 


     if (Mo_multiPick) { 
      //show Ok 
      OkBtn.setVisibility(View.VISIBLE); 

     } else { 
      OkBtn.setVisibility(View.INVISIBLE); 
     } 
     if (Mo_allawNoPick) { 
      //show Cancel 
      CancelBtn.setVisibility(View.VISIBLE); 
     } else { 
      CancelBtn.setVisibility(View.INVISIBLE); 
     } 
    } catch (Exception ex) { 

    } 
}

的一部分，这是我的回收站Adapter.class

package abtech.waiteriano.com.waitrer.adapters; 

import android.content.Context; 
import android.support.v7.widget.RecyclerView; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.CheckBox; 
import android.widget.TextView; 

import java.util.ArrayList; 

import abtech.waiteriano.com.waitrer.R; 
import abtech.waiteriano.com.waitrer.getters_and_setters.ItemsListsModel; 

/** 
* Created by yassin on 5/17/17. 
*/ 

public class RecycleAdapterDialogModifier extends RecyclerView.Adapter<RecycleAdapterDialogModifier.MyViewHolder> { 
    private Context context; 
    ArrayList<ItemsListsModel> modifierArrayList; 

    public RecycleAdapterDialogModifier(Context context, ArrayList<ItemsListsModel> modifierArrayList) { 
     this.context = context; 
     this.modifierArrayList = modifierArrayList; 
    } 

    @Override 
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
     View itemView = LayoutInflater.from(parent.getContext()) 
       .inflate(R.layout.modifierlistitem, parent, false); 


     return new MyViewHolder(itemView); 
    } 

    @Override 
    public void onBindViewHolder(MyViewHolder holder, int position) { 
     ItemsListsModel itemsListsModel = modifierArrayList.get(position); 


     holder.modifierCB.setText(itemsListsModel.getName()); 



    } 

    @Override 
    public int getItemCount() { 
     return modifierArrayList.size(); 
    } 

    public class MyViewHolder extends RecyclerView.ViewHolder { 
     CheckBox modifierCB; 
     TextView usernameContItem; 


     public MyViewHolder(View itemView) { 
      super(itemView); 
      modifierCB = (CheckBox) itemView.findViewById(R.id.itemCb); 

     } 
    } 
}

希望这会是清楚

来源

2017-06-15 Nativony

只需设置回收视图的layoutManager

modifierItemList.setLayoutManager(new LinearLayoutManager(context));

来源

2017-06-18 02:13:24 Nativony

为什么复选框列表中的项目不出现

回答

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