从列表视图中选择的项目创建一个新列表

Question

此问题已被修改为显示工作代码。

当他们点击牛排等物品时，我希望将该物品放入另一个列表中。如果他们然后选择土豆，那么也应该添加到这个新列表中，以便最后我将有一个列表显示用户选择的所有项目。这是我到目前为止。

LunchListMenu.java

package com.mycompany.lunch; 

import java.util.ArrayList; 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ArrayAdapter; 
import android.widget.Button; 
import android.widget.ListView; 
import android.widget.Toast; 

public class LunchListMenu extends Activity { 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(final Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.maincoarse); 
     final ListView lv=(ListView)findViewById(R.id.listView1);    
     ArrayAdapter<CharSequence> adapter=ArrayAdapter.createFromResource(this, R.array.lunch_menu,android.R.layout.simple_list_item_1); 
     lv.setAdapter(adapter); 
     final ArrayList<String> myNewList = new ArrayList<String>(); 
     lv.setOnItemClickListener(new OnItemClickListener() { 



      @Override 
      public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { 
       String item=lv.getItemAtPosition(arg2).toString(); 
       String itemordered; 
       itemordered = item + " added to list"; 
       Toast.makeText(getApplicationContext(), itemordered, Toast.LENGTH_SHORT).show(); 
       myNewList.add(item);     
      } 
     }); 

       // List View Button 
       Button btnLunchList = (Button) findViewById(R.id.lrList); 
       btnLunchList.setOnClickListener(new View.OnClickListener() { 

        @Override 
        public void onClick(View v) {      
         setContentView(R.layout.selecteditems); 
         ListView selecteditems = (ListView) findViewById(android.R.id.list); 
         ArrayAdapter<String> newadapter = new ArrayAdapter<String>(LunchListMenu.this, android.R.layout.simple_list_item_1, myNewList);    
         selecteditems.setAdapter(newadapter); 
        } 
       }); 
    } 
        public void shareMyList(View v){ 
         // Share Selected Items Button 
         Button btnShareItems = (Button) findViewById(R.id.shareMyList); 
         btnShareItems.setOnClickListener(new View.OnClickListener() { 

          @Override 
          public void onClick(View v) { 
           // TODO Auto-generated method stub 

           Intent share = new Intent(Intent.ACTION_SEND); 
           share.setType("text/plain"); 
           share.putExtra(Intent.EXTRA_TEXT, "I'm being sent!!"); 
           startActivity(Intent.createChooser(share, "Share Text")); 
          } 


         }); 
        } 
} 

我还创建了一个新的布局叫做selecteditems.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:background="@drawable/main_background" 
    android:paddingLeft="10.0dip" 
    android:paddingTop="0.0dip" 
    android:paddingRight="10.0dip" 
    android:paddingBottom="10.0dip" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 

     <LinearLayout 
      android:layout_width="fill_parent" 
      android:layout_height="100.0dip" 
      android:background="@drawable/title" /> 

     <LinearLayout 
      android:orientation="horizontal" 
      android:background="@drawable/head" 
      android:layout_width="fill_parent" 
      android:layout_height="10.0dip" />  

      <ListView 
       android:id="@android:id/list" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" 
       android:textSize="25dip" 
       android:textStyle="bold" 
       android:padding="10dip" 
       android:textColor="#ffffff"/> 

</LinearLayout> 

现在添加项目到新selecteditems。

Answer 1

只需创建一个arrayList并将其放入其中，然后找到您的“其他列表”并使用此arrayList提供该列表。

myNewList.add(item); 

，然后每当你想设置列表：

ListView newList = (ListView) findViewById(R.id.your_new_list); 
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, myNewList, android.R.layout.simple_list_item_1); 
newList.setAdapter(adapter); 

Answer 2

以列表：

public class arbysListMenu extends ListActivity { 
    List<String> itemordered = null; // As global 
/** Called when the activity is first created. */ 
. 
. 
. 
. 

然后添加项目

ArrayList<String> myNewList = new ArrayList<String>(); 

你的项目单击

时间顺序列表点击：

@Override 
     public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { 

      //String item=lv.getItemAtPosition(arg2).toString(); 

      itemordered.add(lv.getItemAtPosition(arg2).toString()); 

      //// Now FILL another ListView, adapter using this itemordered list 

     } 
     });