0

这是我的第一个片段，它通过 xml 布局打开片段

public class ListFrag extends SherlockFragment implements OnItemClickListener
{
    Context c;
    List<ReferalRow> referal_RowItems;
    DoctorDaoImpl doctorDao;
    DoctorServiceImpl service;
    DoctorValidator doctorValidator;
    View layoutView;
    ListView doctoListView;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        layoutView = inflater.inflate(R.layout.activity_refer_mangmnt, null);
        return layoutView;
    }

这是我的activity_refer_mangmnt.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
   android:padding="5dp" >

 <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" 
        android:layout_weight="2"

        android:padding="2dp">
    <ListView
        android:id="@+id/listView_refer_list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:dividerHeight="1dp"
        android:divider="@android:color/black"
        android:choiceMode="singleChoice"
        android:listSelector="@drawable/list_selector" />
    </LinearLayout>
<LinearLayout 
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"
    android:background="@drawable/rightpanel_back">
 <fragment
     android:id="@+id/detail_fragment"
     android:tag="detailfrag"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     class="com.example.app1.DetailsFrag" />
 </LinearLayout>
`</LinearLayout>

这是我的 DetailFrag 课程

public class DetailsFrag extends SherlockFragment
{
    ExpandableListView detailList;
    TextView tvMessage;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    contentView = inflater.inflate(R.layout.activity_refer_view, null);
    detailList = (ExpandableListView) contentView.findViewById(R.id.ep_detail_view);
    tvMessage = (TextView)contentView.findViewById(R.id.tv_textView);
    return contentView;
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onActivityCreated(savedInstanceState);
    if(id==0)
    {
        detailList.setVisibility(View.GONE);
        tvMessage.setText("Click on the item on the left panel to view the details");
    }
    else
    {
        detailList.setVisibility(View.VISIBLE);
        tvMessage.setVisibility(View.GONE);
}

这是我在 LIstFrag 中的 onItem 点击监听器

FragmentTransaction ft = getFragmentManager().beginTransaction();
        Fragment lastFrag = getFragmentManager().findFragmentByTag("detailfrag");
        if(lastFrag!=null)
        ft.remove(lastFrag);
        Fragment fragment = Fragment.instantiate(c, DoctorDetailsFrag.class.getName(),arguments);
        ft.replace(R.id.detail_fragment, fragment);
        ft.commit();

我需要在单击列表中的项目后第一次在右侧面板中显示一条消息时，我想消失该消息。但是这里的消息没有从片段中删除。它显示在新片段的背景中。是吗？

4

1 回答 1

0

尝试：

ft.addToBackStack(null)

致电后： ft.remove(lastFrag);

也许这个链接可以帮助你理解这个交易：http: //developer.android.com/guide/components/fragments.html#Transactions

另一种方法是在 lastFrag 不为空时重用它。然后你需要在你的 DetailFrag 中使用一个从你的 clickListener 调用的方法。

于 2013-06-13T06:15:51.770 回答