如何用简单的适配器和列表视图创建自己的自定义行布局 [英] How to create own custom row layout using simple adapter and listview

问题描述

我需要创建一个自定义列表视图，可以让我有每行2串/ textviews帮助。我一直在研究了很多，但我似乎无法理解如何做到这一点。任何样品code和帮助将是AP preciated。我知道如何使用simple_list_item_1管理，而不是我自己的布局。 谢谢。 我的（静止无功能）code

 包com.painLogger;
 //全进口

 公共类PainLoggerActivity扩展活动实现OnClickListener，
 OnKeyListener {

     / **第一次创建活动时调用。 * /
     的EditText txtItem;
     的EditText txtItem2;
     按钮btnAdd;
     ListView控件时listItems;
     ArrayAdapter＆LT;字符串＆GT; AA;
     名单＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; painItems =新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; （）;
     INT []键;
     的String []的;
     SimpleAdapter适配器;


     @覆盖
     公共无效的onCreate（包savedInstanceState）{
         super.onCreate（savedInstanceState）;
         的setContentView（R.layout.main）;

         txtItem =（EditText上）findViewById（R.id.txtItem）;
         txtItem2 =（EditText上）findViewById（R.id.txtItem2）;

         btnAdd =（按钮）findViewById（R.id.btnAdd）;
         listItems中的=（的ListView）findViewById（R.id.listItems）;

         btnAdd.setOnClickListener（本）;

         从=新的String [] {
             row_1，row_2
         };
         为=新INT [] {
             R.id.row1，R.id.row2
         };

         SimpleAdapter适配器=新SimpleAdapter（这一点，painItems，R.layout.mylistlayout，
             从到）;
         listItems.setAdapter（适配器）;
     }

     私人无效的addItem（）{
         HashMap的＆LT;字符串，字符串＆GT;图=新的HashMap＆LT;字符串，字符串＆GT; （）;

         map.put（row_1，txtItem.getText（）的toString（））;
         map.put（row_2，txtItem2.getText（）的toString（））;
         painItems.add（图）
         adapter.notifyDataSetChanged（）;
     }

     @覆盖
     公共无效的onClick（视图v）{
         如果（V == this.btnAdd）{
             的addItem（）;
         }
     }

     @覆盖
     公共布尔onKey（视图V，INT关键code，KeyEvent的事件）{

         如果（event.getAction（）== KeyEvent.ACTION_DOWN和放大器;＆放大器;关键code ==
             KeyEvent.KEY code_DPAD_CENTER）{THIS.ADDITEM（）;

         }
         返回false;
     }
 }
 

解决方案

参照这个问题，使用code。
编辑：添加HashMap中定义

 的String []从=新的String [] {row_1，row_2};
INT []到=新INT [] {R.id.row1，R.id.row2};
名单＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT; fillMaps =新的ArrayList＆LT; HashMap的＆LT;字符串，字符串＆GT;＆GT;（）;

对于（INT J = 0; J＆LT; sourceObj.length（）; J ++）{
        HashMap的＆LT;字符串，字符串＆GT;图=新的HashMap＆LT;字符串，字符串＆GT;（）;
        map.put（row_1，sourceObj.data1）;
        map.put（row_2，sourceObj.data2）;
        fillMaps.add（图）
}

SimpleAdapter适配器=新SimpleAdapter（背景下，fillMaps，R.layout.yourlayoutname，从，到）;
mListView.setAdapter（适配器）;
 

• 请您的列表视图，可以是一个的LinearLayout 一对夫妇的 TextViews
• 参考在此行中使用 R.layout.yourlayoutname 此列表布局 SimpleAdapter适配器=新SimpleAdapter（背景下，fillMaps，R.layout.result从，到）;
• 通过你的数据

这个方法的好处是，它避免了你创建任何新的对象，它不涉及太多code。

I need help in creating a custom listview that allows me to have 2 strings/textviews per row. I have been researching a lot, but I cannot seem to understand how to do this. Any sample code and help would be appreciated. I know how to use simple_list_item_1, but not my own layout. Thank YOU. My (Still Non-Functioning) Code

 package com.painLogger;
 //ALL IMPORTS

 public class PainLoggerActivity extends Activity implements OnClickListener,
 OnKeyListener {

     /** Called when the activity is first created. */
     EditText txtItem;
     EditText txtItem2;
     Button btnAdd;
     ListView listItems;
     ArrayAdapter < String > aa;
     List < HashMap < String, String >> painItems = new ArrayList < HashMap < String, String >> ();
     int[] to;
     String[] from;
     SimpleAdapter adapter;


     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);

         txtItem = (EditText) findViewById(R.id.txtItem);
         txtItem2 = (EditText) findViewById(R.id.txtItem2);

         btnAdd = (Button) findViewById(R.id.btnAdd);
         listItems = (ListView) findViewById(R.id.listItems);

         btnAdd.setOnClickListener(this);

         from = new String[] {
             "row_1", "row_2"
         };
         to = new int[] {
             R.id.row1, R.id.row2
         };

         SimpleAdapter adapter = new SimpleAdapter(this, painItems, R.layout.mylistlayout,
             from, to);
         listItems.setAdapter(adapter);
     }

     private void addItem() {
         HashMap < String, String > map = new HashMap < String, String > ();

         map.put("row_1", txtItem.getText().toString());
         map.put("row_2", txtItem2.getText().toString());
         painItems.add(map);
         adapter.notifyDataSetChanged();
     }

     @Override
     public void onClick(View v) {
         if (v == this.btnAdd) {
             addItem();
         }
     }

     @Override
     public boolean onKey(View v, int keyCode, KeyEvent event) {

         if (event.getAction() == KeyEvent.ACTION_DOWN && keyCode ==
             KeyEvent.KEYCODE_DPAD_CENTER) {             this.addItem();

         }
         return false;
     }
 }

解决方案

With reference to this question, use this code.
EDIT: Added hashmap definition

String[] from = new String[] {"row_1", "row_2"};
int[] to = new int[] { R.id.row1, R.id.row2};
List<HashMap<String, String>> fillMaps = new ArrayList<HashMap<String, String>>();

for (int j = 0; j < sourceObj.length(); j++) {
        HashMap<String, String> map = new HashMap<String, String>();
        map.put("row_1", sourceObj.data1);
        map.put("row_2", sourceObj.data2);
        fillMaps.add(map);
}

SimpleAdapter adapter = new SimpleAdapter(context, fillMaps, R.layout.yourlayoutname, from, to);
mListView.setAdapter(adapter);

• Make your list view which could be a LinearLayout with a couple of TextViews
• Reference this list layout using R.layout.yourlayoutname in this line SimpleAdapter adapter = new SimpleAdapter(context, fillMaps, R.layout.result, from, to);
• Pass in your data

The good thing about this approach is that it avoids you having to create any new objects, and it doesn't involve much code.

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