0
我添加了默認的選項卡活動。我有一個帶有listview(menuCardListView)的片段。我想這取決於所選的tab.I已經實現了這個的主要活動中來填充數據(表),該列表視圖:在片段中選中的選項卡上填充Android Listview
public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
// When the given tab is selected, switch to the corresponding page in
// the ViewPager.
mViewPager.setCurrentItem(tab.getPosition());
try {
ListView listView = (ListView)mViewPager.findViewById(R.id.menuCardListView);
List<Product> groupList = new ProductController(mViewPager.getContext()).ProductList(1);
MenuCardListViewAdapter adapter = new MenuCardListViewAdapter(this, groupList);
listView.setAdapter(adapter);
} catch (InterruptedException e) {
e.printStackTrace();
} catch (JSONException e) {
e.printStackTrace();
}
}
ListView控件爲空?我究竟做錯了什麼?