java 如何调用 onCreateView 方法或刷新我的片段？
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How call onCreateView Method or refresh my fragment?
提问by alfo888_ibg
I would like to refresh or call onCreateView in the code following . I have a contex menù to delete an Item and after I would like to refresh the fragment with the new Item.. Thanks at all!
我想在以下代码中刷新或调用 onCreateView 。我有一个上下文菜单来删除一个项目，然后我想用新项目刷新片段..非常感谢！
public class ItemDetailFragmentBlackBoard extends Fragment {
公共类 ItemDetailFragmentBlackBoard 扩展片段 {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {
....
return rootView;
}
}
}
/** Menu on LongClick */
@Override
public void onCreateContextMenu(ContextMenu menu, View v,ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Context Menu");
menu.add(0, v.getId(), 0, "Delete");
}
@Override
public boolean onContextItemSelected(MenuItem item) {
if(item.getTitle()=="Delete"){
String status="";
AdapterContextMenuInfo info = (AdapterContextMenuInfo)item.getMenuInfo();
int posizione = info.position;
String[] messaggioDaCancellare= S.getMessaggiInfo().get(posizione);
try{
JSONObject del =ProxyUtils.proxyCall("deleteMessage",messaggioDaCancellare[4]);
status=del.getString("status");
} catch (Exception e) {
Log.i("Eccezione", e.toString());
}
Activity activity= getActivity();
if(status.equals("OK")){
**HERE......I would like to refresh my fragment o recall onCreateView method...**
Toast.makeText(activity, "Delete avvenuta", Toast.LENGTH_SHORT).show();
}else
Toast.makeText(activity, "Delete non riuscita", Toast.LENGTH_SHORT).show();
} else {return false;}
return true;
}
回答by Afshin
It's better to define a viewGroup like a simple linearLayout (call it screen) in onCreateView function, and fill it in a function like init(). Each time you want to re-create your view, just remove all linearLayout's children and call init().
最好在onCreateView函数中定义一个像简单的linearLayout（称之为screen）的viewGroup，并用init()这样的函数填充它。每次要重新创建视图时，只需删除所有 linearLayout 的子项并调用 init()。
You did good job but it's more expensive than my simple solution.
你做得很好，但比我的简单解决方案贵。
回答by alfo888_ibg
I solved my problem replecing my fragmet with itself
我解决了用自己替换片段的问题
the code is :
代码是：
{
arguments.putString(ItemDetailFragmentBlackBoard.ARG_ITEM_ID, id);
ItemDetailFragmentBlackBoard fragment= new ItemDetailFragmentBlackBoard();
fragment.setArguments(arguments);
getFragmentManager().beginTransaction().replace(R.id.item_detail_container, fragment).commit();
}
ItemDetailFragmentBlackBoard is my fragment. I am deleting an Item from listView and after I delete it i re-call my fragment with de code above so I get un refresh!
ItemDetailFragmentBlackBoard 是我的片段。我正在从 listView 中删除一个项目，在我删除它之后，我用上面的 de 代码重新调用我的片段，这样我就不会刷新了！
回答by Ihdina
public class ItemDetailFragmentBlackBoard extends Fragment {
public static View _rootView;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (_rootView == null || _isRefreshDashboard) {
_rootView = inflater.inflate(R.layout.ItemDetailFragmentBlackBoard, container, false);
// your code can't be change without refreshFragment in here..
_isDashboardRefresh = false;
}
}
// Global variables
// 全局变量
public abstract class CommonBase extends AppCompatActivity {
public static boolean _isRefreshDashboard;
}
// Refresh your fragment
// 刷新你的片段
CommonBase._isRefreshDashboard = true;
