用SimpleAdapter来设置ListView的内容
2024-08-26 06:08:16
Mainactivit.java
package com.kale.listview; import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ListView;
import android.widget.SimpleAdapter; public class MainActivity extends Activity { ListView myLv; @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); myLv = (ListView)findViewById(R.id.red_listView_id);
//定义5个人名数组,5个性别数组,5个图片(图省事,我用一个图片代替了)
final String []name = {"Jack","Tony","Tom","Luna","Nacy"};
String []sex = {"male","male","male","female","female"};
int []pic = {R.drawable.kale,R.drawable.kale,R.drawable.kale,R.drawable.kale,R.drawable.kale}; //建立一个list,里面的元素师Map,Map中是String,object
List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();
for (int i = 0; i < name.length; i++) {
//建立list中的子元素,用键值对的形式来存放数据
Map<String, Object> listItem = new HashMap<String, Object>();
listItem.put("picture", pic[i]);
listItem.put("name", name[i]);
listItem.put("sex", sex[i]);
//将子元素添加入list中
list.add(listItem);
} //建立一个simpleAdapter
//1.Context对象,2.list对象,3.item的布局文件,4.各个元素来源的键名,5.各个元素对应控件的id
SimpleAdapter adapter = new SimpleAdapter(this, list, R.layout.item,
new String[] {"picture","name","sex"},
new int[] {R.id.pic_imageView_id,R.id.name_textView_id,R.id.sex_textView_id}); myLv.setAdapter(adapter);
myLv.setOnItemClickListener(new OnItemClickListener() { @Override
public void onItemClick(AdapterView<?> arg0, View parent, int position,long id) {
// TODO 自动生成的方法存根
System.out.println("onItemClick"+name[position]+"被选中了"); }
});
//列表项被选中后的监听器,两个监听器的区别参考这篇文章:http://blog.csdn.net/bcai2/article/details/15028979
//就和电视的菜单一样,上下选择来触发选中(selected)事件,按下确定才是点击(click)事件。
myLv.setOnItemSelectedListener(new OnItemSelectedListener() { @Override
public void onItemSelected(AdapterView<?> parent, View arg1,int position, long id) {
// TODO 自动生成的方法存根
System.out.println("onItemSelected"+name[position]+"被选中了");
} @Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO 自动生成的方法存根 }
});
}
}
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" > <!-- 设置红色分割线的listView -->
<ListView
android:id="@+id/red_listView_id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:divider="#f00"
android:dividerHeight="2dp"
android:layout_gravity="center"
android:headerDividersEnabled="false"/> </LinearLayout>
item.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="wrap_content"
android:orientation="horizontal" > <ImageView
android:id="@+id/pic_imageView_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ic_launcher" /> <TextView
android:id="@+id/name_textView_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:layout_marginLeft="10dp"
android:layout_gravity="center_vertical"
android:textAppearance="?android:attr/textAppearanceLarge" /> <TextView
android:id="@+id/sex_textView_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:textColor="#0000ff"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" /> </LinearLayout>
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