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我在使用 ViewPager 时遇到了一些问题，我使用以下 instantiateItem 方法创建了一个 PagerAdapter

    @Override
    public Object instantiateItem(View collection, int position) {
        View v = in.inflate(R.layout.weeklyoverviewview, null);
        ListView lv = (ListView) v.findViewById(R.id.weeklyoverviewlist);
        WeekAdapter a = new WeekAdapter(cxt, time.plusWeeks(position).getWeekOfWeekyear(), time.plusWeeks(position).getYear());
        lv.setAdapter(a);
        TopNavigatorView nv = (TopNavigatorView) v.findViewById(R.id.weeklyoverviewnavigator);
        nv.setTitle("W" + time.plusWeeks(position).getWeekOfWeekyear() + " - " + time.plusWeeks(position).getYear());
        ((ViewPager) collection).addView(v, 0);
        return v;
    }

WeekAdapter 看起来像

 public class WeekAdapter extends BaseAdapter {

        public ArrayList<View> views;

        public WeekAdapter(Context context, int week, int year) {
            LayoutInflater in = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            views = new ArrayList<View>();
            DateTime d = new DateTime().withYear(year).withWeekOfWeekyear(week);
            for (int i = 0; i < 7; i++) {
                View v = in.inflate(R.layout.weeklyoverviewlisttitle, null);
                TextView t = (TextView) v.findViewById(R.id.weeklytitletext);
                t.setText(d.withDayOfWeek(i + 1).dayOfWeek().getAsText() + ", " + d.withDayOfWeek(i + 1).monthOfYear().getAsText() + " "
                        + d.withDayOfWeek(i + 1).getDayOfMonth() + ", " + d.withDayOfWeek(i + 1).getYear());
                views.add(v);
            }
        }

        public int getCount() {
            return views.size();
        }

        public Object getItem(int arg0) {
            return views.get(arg0);
        }

        public long getItemId(int arg0) {
            return views.get(arg0).getId();
        }

        public View getView(int arg0, View arg1, ViewGroup arg2) {
            return views.get(arg0);
        }

    }

问题是前 3 页看到直接实例化似乎是正确的，但是当我滑动到另一个视图时，我在列表视图中有 7 个项目，但文本为空。当我用日志检查文本视图中的文本时，我看到文本设置正确，但我没有出现。

编辑：像这样， http: //i50.tinypic.com/108e8ac.png，不能显示为图像 couse 声誉..

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1 回答 1

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Found the solution myself, but no idea what so ever why it's working. I changed the ListView's height to fill_parent instead of wrap_content

于 2012-07-10T07:14:20.867 回答