Question

我有一个 main.xml 有一个 listview 。 listview 的一行在 row.xml 中定义如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="80dp"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="60"
        android:contentDescription="@string/app_name"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/text"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="40"
        android:gravity="center"
        android:textColor="#FF0000"
        android:text="sdfasdf" />
</LinearLayout>

<HorizontalScrollView
    android:layout_width="match_parent"
    android:background="#FFDA35"
    android:layout_height="70dp" >

    <LinearLayout
        android:id="@+id/ll"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:orientation="horizontal" >
    </LinearLayout>
</HorizontalScrollView>

如您所见，每个listview行都有一个水平滚动视图，当listview生成行时，我想在其中动态加载scrollview子项。 Scrollview子项在 scrollview_child.xml ：

中定义

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="60dp"
android:layout_height="match_parent"
android:background="@null" >

<RelativeLayout
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center"
    android:layout_marginBottom="5dp"
    android:layout_marginLeft="5dp"
    android:layout_marginRight="5dp"
    android:layout_marginTop="5dp"
    android:background="#FFFFFF" >

    <ImageView
        android:id="@+id/img"
        android:layout_width="40dp"
        android:layout_height="40dp"
        android:contentDescription="@string/app_name"
        android:gravity="center"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/img"
        android:layout_alignRight="@+id/img"
        android:layout_below="@+id/img"
        android:gravity="center" />
</RelativeLayout>

我的java代码：的 MainActivity.java

public class MainActivity extends ActionBarActivity {

ListView list;
private ArrayList<String> people;
private ArrayList<String> school;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    list = (ListView)findViewById(R.id.list);

    createLists();
    ListViewAdapter listAdapter = new ListViewAdapter(this, people, school);
    list.setAdapter(listAdapter);

}

public void createLists() {
    people = new ArrayList<String>();
    people.add("Bob");
    people.add("Peter");
    people.add("Anna");
    people.add("Jane");

    school = new ArrayList<String>();
    school.add("A");
    school.add("B");
    school.add("C");
    school.add("D");
    school.add("E");
}

}

ListViewAdapter.java ：

public class ListViewAdapter extends BaseAdapter{

private ArrayList<String> people;
private ArrayList<String> school;
MainActivity activity;
public ListViewAdapter(MainActivity activity, ArrayList<String> people, ArrayList<String> school) {
    this.people = people;
    this.school = school;
    this.activity = activity;
}

private static class ViewHolder {
    private TextView cateName;
    private ImageView cateImage;
    private LinearLayout ll;
    private ViewHolder (View v) {
        cateImage = (ImageView)v.findViewById(R.id.image);
        cateName = (TextView)v.findViewById(R.id.text);
        ll = (LinearLayout)v.findViewById(R.id.ll);
    }
}

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return people.size();
}

@Override
public Object getItem(int position) {
    return people.get(position);
}

@Override
public long getItemId(int position) {
    return people.indexOf(getItem(position));
}

@SuppressLint("InlinedApi")
@Override
public View getView(int position, View convertView, ViewGroup parent) {

    Log.i("run", "run");
    ViewHolder holder = null;
    LayoutInflater infllater  = (LayoutInflater) activity.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

    if (convertView == null) {
        convertView = infllater.inflate(R.layout.home_page_list_odd_item, parent, false);
        holder = new ViewHolder(convertView);
        convertView.setTag(holder);


    } else {

        holder = (ViewHolder)convertView.getTag();
    }

    // 1 row element
    holder.cateImage.setImageResource(R.drawable.defaultavatar);
    holder.cateName.setText(people.get(position));

    Log.i("size: ", "school: " + school.size() + "people: " + people.size());

    // set data for scroll view
    for (int i = 0; i<school.size(); i++) {
        LayoutInflater inflater = (LayoutInflater) this.activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View v = inflater.inflate(R.layout.home_page_scroll_list_item, parent, false);

        TextView schoolName = (TextView) v.findViewById(R.id.name);
        ImageView schoolImage = (ImageView)v.findViewById(R.id.img);
        RelativeLayout rl = (RelativeLayout)v.findViewById(R.id.rl);

        schoolName.setText(school.get(i));
        schoolImage.setImageResource(R.drawable.ic_launcher);
        rl.setBackgroundResource(R.drawable.bg_deal);
        holder.ll.addView(v);
    }
    return convertView;
}

}

我的问题是水平滚动视图中的子项是重复的，因为方法getView（）正在多次调用。我的结果如下：http://i.imgur.com/70tte3I.png

请帮忙！对不起，我的英语很糟糕！

在水平滚动视图中动态加载它们时的重复元素

0 个答案: