Listview和Adapter

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.mpyypm.listviewzuoye.MainActivity">
<ListView
    android:id="@+id/list"
    android:scrollbars="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>
<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <TextView
        android:id="@+id/title1"
        android:text="@string/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/title2"
        android:text="@string/age"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/title3"
        android:text="@string/mail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
    <TextView
        android:id="@+id/title4"
        android:text="@string/address"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>
 </LinearLayout>
 </LinearLayout>

Java代码的实现

变量定义

封装,给各个属性设置getter/setter方法

public class ListInfo {
private String title1;
private String title2;
private String title3;
private String title4;

public ListInfo(String title1, String title2, String title3,String title4) {
this.title1=title1;
this.title2=title2;
this.title3=title3;
this.title4=title4;
}
创建Adapter,将数据加载到listview

adapter = new SimpleAdapter(
        getActivity(),
        getData(),
        R.layout.activity_main,
        new String[]{"title1", "title2", "title3", "title4"},
        new int[]{R.id.title1, R.id.title2, R.id.title3, R.id.title4});
ListView listView = (ListView)view.findViewById(R.id.list);
listView.setAdapter(adapter);

添加listview的每个item的单击的监听事件

@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
String data = (String) adapterView.getItemAtPosition(position);
通过Map接口增加数据

private List

// 给list增加数据
HashMap<String, Object> data = new HashMap<>();
// Map映射添加数据
data.put("title1", "蔡志坤");
data.put("title2", "25");
data.put("title3", "ffczk86@gmail.com");
data.put("title4", "厦门市");
// 将map放到list中
datas.add(data);

data = new HashMap<>();
data.put("title1", "李杰华");
data.put("title2", "25");
data.put("title3", "aa@bb.com");
data.put("title4", "漳州市");
datas.add(data);

data = new HashMap<>();
data.put("title1", "张亮");
data.put("title2", "25");
data.put("title3", "cc@gmail.com");
data.put("title4", "厦门市");
datas.add(data);

data = new HashMap<>();
data.put("title1", "刘玄德");
data.put("title2", "25");
data.put("title3", "ffczk86@gmail.com");
data.put("title4", "福州市");
datas.add(data);

return datas;

}
}
customerAdapter

public class CustomAdapter extends BaseAdapter {
private List dates;
private Context context;

//通过构造方法获取所需对象:上下文和数据
public CustomAdapter(Context context, List dates) {
this.dates = dates;
this.context = context;
}

@Override
public int getCount() {
return dates.size();
}

@Override
public Object getItem(int i) {
return dates.get(i);
}

@Override
public long getItemId(int i) {
return i;
}

//自定义adapter重写getView()方法
@Override
public View getView(int i, View view, ViewGroup parent) {
//1.获取view
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.activity_main, null);
}//2.获取控件对象
TextView title1 = (TextView) view.findViewById(R.id.title1);
TextView title2 = (TextView) view.findViewById(R.id.title2);
TextView title3 = (TextView) view.findViewById(R.id.title3);
TextView title4 = (TextView) view.findViewById(R.id.title4);

//给每个控件赋值
Classinfo classInfo = datas.get(i);
title1.setText(classinfo.gettitle1());
title2.setText(classinfo.getTitle2());
title3.setText(classinfo.gettitle3());
title4.setText(classinfo.gettitle4());
return null;

}

posted @ 2017-05-02 20:25  曹小小曹  阅读(1064)  评论(0编辑  收藏  举报