Listview和Adapter


<LinearLayout xmlns:android&＃61;"http://schemas.android.com/apk/res/android" xmlns:app&＃61;"http://schemas.android.com/apk/res-auto" xmlns:tools&＃61;"http://schemas.android.com/tools" android:orientation&＃61;"vertical" android:layout_width&＃61;"match_parent" android:layout_height&＃61;"match_parent" tools:context&＃61;"com.example.mpyypm.listviewzuoye.MainActivity"> <ListView android:id&＃61;"&＃64;&＃43;id/list" android:scrollbars&＃61;"vertical" android:layout_width&＃61;"match_parent" android:layout_height&＃61;"match_parent"/> <LinearLayout android:layout_width&＃61;"match_parent" android:layout_height&＃61;"wrap_content" android:orientation&＃61;"vertical"> <TextView android:id&＃61;"&＃64;&＃43;id/title1" android:text&＃61;"&＃64;string/name" android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"/> <TextView android:id&＃61;"&＃64;&＃43;id/title2" android:text&＃61;"&＃64;string/age" android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"/> <TextView android:id&＃61;"&＃64;&＃43;id/title3" android:text&＃61;"&＃64;string/mail" android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"/> <TextView android:id&＃61;"&＃64;&＃43;id/title4" android:text&＃61;"&＃64;string/address" android:layout_width&＃61;"wrap_content" android:layout_height&＃61;"wrap_content"/> LinearLayout> LinearLayout>

Java代码的实现

变量定义

封装&＃xff0c;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&＃61;title1;
this.title2&＃61;title2;
this.title3&＃61;title3;
this.title4&＃61;title4;
}
创建Adapter&＃xff0c;将数据加载到listview

adapter &＃61; 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 &＃61; (ListView)view.findViewById(R.id.list); listView.setAdapter(adapter);

添加listview的每个item的单击的监听事件

&＃64;Override
public void onItemClick(AdapterView adapterView, View view, int position, long id) {
String data &＃61; (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 &＃61; new HashMap<>();
// Map映射添加数据 data.put("title1", "蔡志坤"); data.put("title2", "25"); data.put("title3", "ffczk86&＃64;gmail.com"); data.put("title4", "厦门市"); // 将map放到list中 datas.add(data); data &＃61; new HashMap<>(); data.put("title1", "李杰华"); data.put("title2", "25"); data.put("title3", "aa&＃64;bb.com"); data.put("title4", "漳州市"); datas.add(data); data &＃61; new HashMap<>(); data.put("title1", "张亮"); data.put("title2", "25"); data.put("title3", "cc&＃64;gmail.com"); data.put("title4", "厦门市"); datas.add(data); data &＃61; new HashMap<>(); data.put("title1", "刘玄德"); data.put("title2", "25"); data.put("title3", "ffczk86&＃64;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&＃xff1a;上下文和数据
public CustomAdapter(Context context, List dates) {
this.dates &＃61; dates;
this.context &＃61; context;
}

&＃64;Override
public int getCount() {
return dates.size();
}

&＃64;Override
public Object getItem(int i) {
return dates.get(i);
}

&＃64;Override
public long getItemId(int i) {
return i;
}

//自定义adapter重写getView&＃xff08;&＃xff09;方法
&＃64;Override
public View getView(int i, View view, ViewGroup parent) {
//1.获取view
if (view &＃61;&＃61; null) {
view &＃61; LayoutInflater.from(context).inflate(R.layout.activity_main, null);
}//2.获取控件对象
TextView title1 &＃61; (TextView) view.findViewById(R.id.title1);
TextView title2 &＃61; (TextView) view.findViewById(R.id.title2);
TextView title3 &＃61; (TextView) view.findViewById(R.id.title3);
TextView title4 &＃61; (TextView) view.findViewById(R.id.title4);

//给每个控件赋值
Classinfo classInfo &＃61; datas.get(i);
title1.setText(classinfo.gettitle1());
title2.setText(classinfo.getTitle2());
title3.setText(classinfo.gettitle3());
title4.setText(classinfo.gettitle4());
return null;

}