我尝试用两个片段创建 viewpager。在一个片段中，我尝试使用动态内容创建列表视图。
主.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.example.pkg.views.CustomViewPager
android:id="@+id/view_pager"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.view.PagerTabStrip
android:id="@+id/pager_title"
android:paddingBottom="10dp"
android:paddingTop="10dp"
android:textAppearance="@style/PagerTabStripText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="top" />
</com.example.pkg.views.CustomViewPager>
</RelativeLayout>
在主要活动类中，我使用自己的 CustomFragmentAdapter 和覆盖的 getItem(int index) 方法。
@Override
public Fragment getItem(int i) {
switch (i) {
case 0:
return new List();
类列表扩展片段：
public class List extends Fragment {
private PointManager pointManager;
private ListView list ;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.list, container, false);
list = (ListView) rootView.findViewById(R.id.point_list);
return rootView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
pointManager = PointManager.getInstance(getActivity());
ListViewAdapter adapter = new ListViewAdapter(getActivity(), R.id.point_list, pointManager.getPoints());
list.setAdapter(adapter);
list.invalidate();
}
@Override
public void onResume() {
super.onResume();
ListViewAdapter adapter = new ListViewAdapter(getActivity(), R.id.point_list, pointManager.getPoints());
list.setAdapter(adapter);
list.invalidate();
}
}
列表.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ListView
android:id="@+id/point_list"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@android:color/white"
android:divider="#ffdead"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" />
</RelativeLayout>
列表视图适配器：
public class ListViewAdapter extends ArrayAdapter<Point> {
private final Activity activity;
private List<Point> points;
public ListViewAdapter(Activity context, int textViewResourceId, List<Point> objects) {
super(context, textViewResourceId, objects);
this.activity = context;
this.points = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parentView) {
ViewHolder viewHolder;
View rowView = convertView;
if(rowView == null) {
LayoutInflater inflater = activity.getLayoutInflater();
rowView = inflater.inflate(R.layout.custom_list, parentView, false);
viewHolder = new ViewHolder();
viewHolder.title = (TextView) rowView.findViewById(R.id.notification_title);
viewHolder.description = (TextView) rowView.findViewById(R.id.notification_desc);
viewHolder.icon = (ImageView) rowView.findViewById(R.id.notification_icon);
rowView.setTag(viewHolder);
}
else
viewHolder = (ViewHolder) rowView.getTag();
viewHolder.title.setText(points.get(position).getTitle());
viewHolder.description.setText(points.get(position).getDescription());
return rowView;
}
@Override
public int getCount() {
return points.size();
}
private class ViewHolder {
TextView title;
TextView description;
ImageView icon;
}
}
一切都好。但！滑动在 ViewPager 中不起作用。我认为这是因为我在 onCreateView 中返回 rootView。如果我返回 super.onCreateView(...)，滑动就可以了！但未显示列表。
怎么了？
谢谢。