PagerslidingTabStrip：如何在运行时刷新当前选项卡中的内部片段Listview并停止为下一个选项卡加载数据

Question

公共类PageSlidingTabStripFragment扩展Fragment{

public static final String TAG = PageSlidingTabStripFragment.class
        .getSimpleName();

private MyListAdapter myAdapter;

private boolean isDeleteBtnClicked = false;
private int tabType = 0;
private ListView myListView;

public static PageSlidingTabStripFragment newInstance() {
    return new PageSlidingTabStripFragment();
}

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setRetainInstance(true);
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    return inflater.inflate(R.layout.pager, container, false);
}

@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    PagerSlidingTabStrip tabs = (PagerSlidingTabStrip) view
            .findViewById(R.id.tabs);
    ViewPager pager = (ViewPager) view.findViewById(R.id.pager);
    MyPagerAdapter adapter = new MyPagerAdapter(getChildFragmentManager());
    pager.setAdapter(adapter);
    tabs.setViewPager(pager);

}

public class MyPagerAdapter extends FragmentPagerAdapter {

    public MyPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    private final String[] TITLES = { "Categories", "Home", "Top Paid",
    "Top Free" };

    @Override
    public CharSequence getPageTitle(int position) {
        return TITLES[position];
    }

    @Override
    public int getCount() {
        return TITLES.length;
    }

    @Override
    public SherlockFragment getItem(int position) {

        return new SuperAwesomeCardFragment().newInstance(position); // here I am calling the fragment by sending the position
    }

}
private ArrayList<String> categoriesList = new ArrayList<String>(); 
private ArrayList<String> homeList = new ArrayList<String>();
private ArrayList<String> topPaidList = new ArrayList<String>();
private ArrayList<String> topFreeList = new ArrayList<String>();

@SuppressLint("ValidFragment")
public class SuperAwesomeCardFragment extends SherlockFragment{

    private final String ARG_POSITION = "position";

    private int position;

    private Button deleteBtn;
    private Button addBtn;

    public SuperAwesomeCardFragment newInstance(int position) {
        SuperAwesomeCardFragment f = new SuperAwesomeCardFragment();
        Bundle b = new Bundle();
        b.putInt(ARG_POSITION, position);
        f.setArguments(b);
        return f;
    }

    public SuperAwesomeCardFragment(){

    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        categoriesList.clear();
        // adding element to Categories arraylist
        categoriesList.add("categories -1");
        categoriesList.add("categories -2");
        categoriesList.add("categories -3");
        categoriesList.add("categories -4");

        homeList.clear();
        // adding element to Home arraylist
        homeList.add("home -1");
        homeList.add("home -2");
        homeList.add("home -3");
        homeList.add("home -4");

        topPaidList.clear();
        // adding element to TopPaid arraylist
        topPaidList.add("topPaid -1");
        topPaidList.add("topPaid -2");
        topPaidList.add("topPaid -3");  
        topPaidList.add("topPaid -4");

        topFreeList.clear();
        // adding element to TopFree arraylist
        topFreeList.add("topFree -1");
        topFreeList.add("topFree -2");
        topFreeList.add("topFree -3");
        topFreeList.add("topFree -4"); 

        position = getArguments().getInt(ARG_POSITION); // here I get the position of tab/view pager
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

        View root = inflater.inflate(R.layout.main_pager_body, container, false);

        myListView = (ListView) root.findViewById(R.id.my_list_view);
        deleteBtn = (Button) root.findViewById(R.id.delete_btn);
        addBtn = (Button) root.findViewById(R.id.add_btn);

        switch (position) {
        // Categories position
        case 0:
            setListView(categoriesList);
            break;
            // Home position
        case 1:
            setListView(homeList);
            break;
            // TopPaid position
        case 2:
            setListView(topPaidList);
            break;
            // TopFree position
        case 3:
            setListView(topFreeList);
            break; 
        } // here I am setting the list view based on the tab/view pager position.

        deleteBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getActivity(), "deleteBtn Button clicked", Toast.LENGTH_SHORT).show();

            }
        });

        addBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(getActivity(), " addBtn Button clicked", Toast.LENGTH_SHORT).show();

                switch (position) {
                // Categories position
                case 0:
                    categoriesList.add("categories -5");
                    setListView(categoriesList);
                    break;
                    // Home position
                case 1:
                    homeList.add("home -5");
                    setListView(homeList);
                    break;
                    // TopPaid position
                case 2:
                    topPaidList.add("topPaid -5");
                    setListView(topPaidList);
                    break;
                    // TopFree position
                case 3:
                    topFreeList.add("topFree -5");
                    setListView(topFreeList);
                    break;
                }

            }
        });

        return root;
    }

    public void setListView(ArrayList<String> myList){
        myAdapter = new MyListAdapter(getActivity().getApplicationContext(), R.layout.list_row, myList);
        myListView.setAdapter(myAdapter);
        myListView.setItemsCanFocus(true);
        myAdapter.notifyDataSetChanged();
    }
}

public class MyListAdapter extends ArrayAdapter<String>
{
    ArrayList<String> myList;
    public MyListAdapter(Context context, int textViewResourceId,
            ArrayList<String> myList) {
        super(context, textViewResourceId, myList);

        this.myList = myList;
    }

    public class ViewHolder {
        private TextView listElementTV;
        private RelativeLayout buttonContains;
        private Button deleteItemBtn;
    }

    public View getView(int position, View convertView, ViewGroup parent) {

        View v = convertView;
        ViewHolder holder = null;
        if (v == null) {
            LayoutInflater vi = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            // get the view for assign data to list view
            v = vi.inflate(R.layout.list_row, null);

            TextView listElementTV = (TextView) v.findViewById(R.id.list_element);

            RelativeLayout buttonContains = (RelativeLayout) v.findViewById(R.id.button_contains);
            Button deleteItemBtn = (Button) v.findViewById(R.id.delete_item);

            holder = new ViewHolder();

            holder.listElementTV = listElementTV;
            holder.buttonContains = buttonContains;
            holder.deleteItemBtn = deleteItemBtn;

            v.setTag(holder);
        } else
            holder = (ViewHolder) v.getTag();

        // get list of hospitalityInfo using position
        String listElement = this.myList.get(position); 

        if(listElement != null){
            holder.listElementTV.setText(listElement);
        }

        return v;
    }

}

}

Answer 1

Android学习者

现在回答为时已晚，但可能会帮助他人

下面的用户链接用于解决这样的实现。