1

我有一个 Sherlock Tab Navigation 实现为以下两个类。课堂Dashboard是主要活动。类DashboardContacts代表选项卡的片段之一。

我正在加载在一段时间内加载的 HTTP 数据，当它加载时，我需要列表视图DashboardContacts以反映从服务器引入的更改并刷新ListView从空白到填充的列表。为此，我notifyDataSetChanged通过中的刷新方法调用方法DashboardContacts，但在ListView更改选项卡之前不会发生任何更改。

public class Dashboard extends SherlockFragmentActivity {

    private DashboardContacts contactsTab=new DashboardContacts();
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.dashboard);

        getSupportActionBar().setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
        ActionBar.Tab tab = getSupportActionBar().newTab();
        tab.setText(getResources().getStringArray(R.array.dashboardTabs)[0]);
        tab.setTabListener(new DashboardHome());
        getSupportActionBar().addTab(tab);

        ActionBar.Tab tab2 = getSupportActionBar().newTab();
        tab2.setText(getResources().getStringArray(R.array.dashboardTabs)[1]);
        tab2.setTabListener(contactsTab);
        getSupportActionBar().addTab(tab2);

        //CALLS ASYNCLOADER HERE TO LOAD HTTP DATA
    }

    private void httpSuccessMethod() {
        //Does some work and then calls:
        contactsTab.refresh(datasource.getAllContacts());

    }

这是 DashboardContacts 类布局：

public class DashboardContacts extends SherlockListFragment  implements ActionBar.TabListener{

    private UserListAdapter listAdapter;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        listAdapter=new UserListAdapter(container.getContext(), ApplicationState.getInstance(container.getContext()).getUserCache());
        setListAdapter(listAdapter);
        return super.onCreateView(inflater, container, savedInstanceState);
    }

    @Override
    public void onStart() {
        super.onStart(); 
    }


    @Override
    public void onTabSelected(Tab tab,android.support.v4.app.FragmentTransaction ft) {
        ft.replace(android.R.id.content, this,"contacts");
        ft.attach(this);
    }

    @Override
    public void onTabUnselected(Tab tab,android.support.v4.app.FragmentTransaction ft) {
        ft.detach(this);

    }

    @Override
    public void onTabReselected(Tab tab,android.support.v4.app.FragmentTransaction ft) {
        // TODO Auto-generated method stub

    }


        public void refresh(List<User> list) {
        if(this.listAdapter != null) {
        this.listAdapter.setList(list);
        this.listAdapter.notifyDataSetChanged();
    }
}

自定义列表适配器中的刷新方法看起来像，所以我实际上也在更改那里的数据：

public void refresh(List<User> list) {
    if(this.listAdapter != null) {
        this.listAdapter.setList(list);
        this.listAdapter.notifyDataSetChanged();
    }
4

1 回答 1

0

我认为这是我没有实现的东西，所以我现在做了并解决了这个问题：

public void setList(List<ExpensePool> list) {
    clear();
    addAll(list);
    notifyDataSetChanged();
}
于 2012-10-28T14:43:05.367 回答