Android listView 梳理

来源：互联网发布：泰牛程序员倒闭编辑：程序博客网时间：2024/05/22 10:41

这几天关于这个ListView一团乱。现在重新梳理下：

①项vlist.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:id="@+id/materialName" android:layout_width="wrap_content"android:layout_height="wrap_content" android:textSize="30px" /><TextView android:id="@+id/materialFormat" android:layout_width="wrap_content"android:layout_height="wrap_content" android:textSize="20px" /><TextView android:id="@+id/id" android:layout_width="wrap_content"android:layout_height="wrap_content" android:textSize="20px" /></LinearLayout>

②页面activity_list.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" ><ListView android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:id="@+id/ListView01"            />  </LinearLayout>

③ListViewActivity.xml:

package cn.com.smartcost.offer.ui;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import cn.com.smartcost.offer.R;import android.app.Activity;import android.os.Bundle;import android.view.MenuItem;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.ListView;import android.widget.SimpleAdapter;public class ListViewActivity extends Activity {      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_list);          //绑定Layout里面的ListView          ListView list = (ListView) findViewById(R.id.ListView01);                    //生成动态数组，加入数据         List<Map<String, Object>> listItem = new ArrayList<Map<String, Object>>();          for(int i=0;i<10;i++)          {              HashMap<String, Object> map = new HashMap<String, Object>();              map.put("materialName", "Level "+i);              map.put("materialFormat", "Finished in 1 Min 54 Secs, 70 Moves! ");              listItem.add(map);          }          //生成适配器的Item和动态数组对应的元素          SimpleAdapter listItemAdapter = new SimpleAdapter(this,listItem,//数据源               R.layout.vlist,//ListItem的XML实现              //动态数组与ImageItem对应的子项                      new String[] {"materialName", "materialFormat"},                            new int[] {R.id.materialName,R.id.materialFormat}          );                   //添加并且显示          list.setAdapter(listItemAdapter);                    //添加点击          list.setOnItemClickListener(new OnItemClickListener() {              @SuppressWarnings("unchecked")@Override              public void onItemClick(AdapterView<?> parent, View view, int position,    long id) {              ListView lView = (ListView)parent;             Map<String, Object> map = (Map<String, Object>) lView.getItemAtPosition(position);                setTitle("点击第"+map.get("materialName").toString()+"个项目");              }        });             }            //长按菜单响应函数      @Override      public boolean onContextItemSelected(MenuItem item) {          setTitle("点击了长按菜单里面的第"+item.getItemId()+"个项目");           return super.onContextItemSelected(item);      }  }

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