通过布局文件来显示ListView内容并注册 ListView事件

时间:2021-09-29 04:53:28

1:layout/vlist.xml是我们的布局文件,在这里一定要对首节点加上

android:descendantFocusability="blocksDescendants" 这一属性,如果不加这一属性那么ListView就会获取不到点击事件。
<?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="horizontal"
android:descendantFocusability="blocksDescendants" >
<ImageView
android:id="@+id/imgNf"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/titleNf"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textIsSelectable="true"/> </LinearLayout>

2:activity_main.xml

<RelativeLayout 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"> <ListView
android:id="@+id/lvList"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView> </RelativeLayout>

3:MainActivity.java

public class MainActivity extends Activity {
private List<Map<String,Object>>list=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ListView lv=(ListView)findViewById(R.id.lvList);
lv.setAdapter(initAdapter());
//注册点击事件
lv.setOnItemClickListener(new OnItemClickListener(){
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {
String title=list.get(arg2).get("title").toString();
Toast.makeText(MainActivity.this, title, Toast.LENGTH_SHORT).show();
}
});
} public SimpleAdapter initAdapter(){
SimpleAdapter simpleAdapter=new SimpleAdapter(
MainActivity.this,
getData(),
R.layout.vlist,
new String[]{"title","img"},
new int[]{R.id.titleNf,R.id.imgNf});
return simpleAdapter;
} private List<Map<String,Object>>getData(){
list=new ArrayList<Map<String,Object>>(); Map<String,Object>map=new HashMap<String,Object>();
map.put("title", "This is a test 1");
map.put("img",R.drawable.ic_launcher);
list.add(map); map=new HashMap<String,Object>();
map.put("title", "This is a test 2");
map.put("img",R.drawable.ic_launcher);
list.add(map); return list;
} }

4:效果

通过布局文件来显示ListView内容并注册 ListView事件

点击第二行数据后:

通过布局文件来显示ListView内容并注册 ListView事件