我正在使用以下代码。Adapter.java 类
public class Adapter extends ArrayAdapter<String> {
private java.util.List<String> List;
private Context context;
public Adapter(List<String> list, Context ctx) {
super(ctx, R.layout.row_item, list);
this.List = list;
this.context = ctx;
}
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
NameHolder holder = new NameHolder();
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.row_item, null);
TextView tv = (TextView)v.findViewById(R.id.textView1);
LinearLayout ll = (LinearLayout) v.findViewById(R.id.myLayout);
holder.topic_name = tv;
holder.myLayout = ll;
v.setTag(holder);
}
else
holder = (NameHolder) v.getTag();
String topic = List.get(position);
holder.topic_name.setText(topic);
ImageView imgUsers = new ImageView(context);
imgUsers.setImageResource(R.drawable.ic_launcher);
holder.myLayout.addView(imgUsers);
return v;
}
private static class NameHolder {
public TextView topic_name;
public LinearLayout myLayout;
}
}
MainActivity.java 类：
public class MainActivity extends Activity {
ListView lv;
ArrayList<String> list;
Adapter myAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
lv = (ListView)findViewById(R.id.listView1);
list = new ArrayList<String>();
for(int i=0; i<10;i++){
list.add("Name"+i);
}
myAdapter = new Adapter(list, MainActivity.this);
lv.setAdapter(myAdapter);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
// TODO Auto-generated method stub
Toast.makeText(MainActivity.this,"lets see"+list.get(arg2), Toast.LENGTH_SHORT).show();
}
});
}
}
活动主.xml：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
row_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="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge" />
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:orientation="horizontal"
android:id="@+id/myLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
></LinearLayout>
</HorizontalScrollView>
</LinearLayout>
现在，预期的输出是每个 listItem 中的单个图像，它趋于无限。而且 onItemClickListener 也不能正常工作。此外，onItemClickListener如果我们不添加HorizontalScrollView. onClickListener()用适配器本身编写几乎没有什么帮助，因为它的工作方式不可预测。此外，在 Logcat 中添加打印语句getView()并观察时，我发现很难理解getView()调用的模式。这些都是我面临的问题。我需要一个我想申请的东西的工作代码。提前致谢。