Android Listview只显示一个项目

Question

我有一个ListView,我改变了行的外观,但listview的大小是一行,而不是全屏.

list_item.xml:

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

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"/>

<LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

    <TextView
        android:id="@+id/textView_news_time"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textColor="#0082A8" />

    <TextView
        android:id="@+id/textView_news_header"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" />

</LinearLayout>

tab_news.xml:

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

<ListView
    android:id="@+id/list_news"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

 </ListView>

  </LinearLayout>

制作适配器:

public class RSSAdapter extends ArrayAdapter<RSSitem> {
Context context; 
int layoutResourceId;    
ArrayList<RSSitem> data = null;
SimpleDateFormat sdf = new SimpleDateFormat("kk:mm ");
public RSSAdapter(Context context, int layoutResourceId, ArrayList<RSSitem> data) {
    super(context, layoutResourceId, data);
    this.layoutResourceId = layoutResourceId;
    this.context = context;
    this.data = data;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View row = convertView;
    NewsHolder holder = null;

    if(row == null)
    {
        LayoutInflater inflater = ((Activity)context).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);

        holder = new NewsHolder();
        holder.txtTime = (TextView)row.findViewById(R.id.textView_news_time);
        holder.txtNews = (TextView)row.findViewById(R.id.textView_news_header);

        row.setTag(holder);
    }
    else
    {
        holder = (NewsHolder)row.getTag();
    }

    RSSitem item = data.get(position);
    holder.txtTime.setText(sdf.format(item.getPubDate()));
    holder.txtNews.setText(item.getTitle());

    return row;
}

static class NewsHolder
{
    TextView txtTime;
    TextView txtNews;
}

项目正在滚动.

抱歉英语不好.感谢帮助

@Varun的建议没有帮助

我发现了错误.谢谢.在"答案"中回答)

Answer 1

我发现错了.tab_news位于TabHost的ScrollView中.如此愚蠢的错误(感谢您的帮助.

更新:ListView不得ScrollView在xml中.如果是,则会出现同样的问题.

更新2:您可以使用NestedScrollView

Answer 2

如果您在ScrollView中使用ListView,则会遇到此问题.我的解决方案如下:

1.创建不可滚动的自定义列表视图

public class NonScrollListView extends ListView {

public NonScrollListView(Context context) {
    super(context);
}
public NonScrollListView(Context context, AttributeSet attrs) {
    super(context, attrs);
}
public NonScrollListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
}
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int heightMeasureSpec_custom = MeasureSpec.makeMeasureSpec(
                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, heightMeasureSpec_custom);
        ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();    
}

}

2.将以上自定义类用于xml文件

  <xx.xx.NonScrollListView
        android:id="@+id/lv_nonscroll_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </xx.xx.NonScrollListView>

它适用于所有操作系统版本.希望最适合你.