如何从另一个片段更新一个片段的ListView?
在另一个Fragment内的Fragment事件发生后，如何传达ListFragment的listview?
How can I communicate a listview of a ListFragment after an event of a Fragment inside another Fragment?
在ListFragment(片段A)中，我有一种刷新ListView的方法.而且，在单击Fragment内的Button之后，我需要刷新它，这是另一个Fragment的子级(片段b)
In the ListFragment (fragment A) I have a method to refresh the ListView. But also, I need to refresh it after a click of a Button inside a Fragment, wich is child of another Fragment (fragment b)
就像Fragment A(listFragment)| Fragment B(详细视图)
(片段C-B的子片段)
Its like Fragment A (listFragment) | Fragment B (detailview)
(fragment C - child fragment of B)
我该怎么办?
您可以通过其标签访问另一个Fragment:
You can access another Fragment by its tag:
// find your fragment
YourFragment f = (YourFragment) getSupportFragmentManager().findFragmentByTag("yourFragTag");
// update the list view
f.updateListView();
Fragment的标签是在附加到容器布局时设置的:
The tag of your Fragment is set when it is attached to a container layout:
FragmentManager fm = getSupportFragmentManager();
fm.beginTransaction().replace(R.id.frameBuy, YourFragment.newInstance(), "yourFragTag").commit();
因此，当您单击Button时，请通过其标签找到要刷新的Fragment，然后调用刷新方法.
So when you click your Button, find the Fragment you want to refresh by its tag, and then call your refresh method.
如果您使用的是ViewPager，这是获取Fragments标签的方法:
IF you are using a ViewPager, this is how to get the Fragments tag:
/**
* Gets the fragment tag of a fragment at a specific position in the viewpager.
*
* @param pos the pos
* @return the fragment tag
*/
public String getFragmentTag(int pos){
return "android:switcher:"+R.id.yourViewPagerId+":"+pos;
}