[英]how to updates recycler view elements from onActivityResult
I have a problem with updates my recyclerView. 我在更新recyclerView时遇到问题。 When I get unswer (it`s ArrayList with objects) in method onActivityResult I call the custom update method, where I update my ArrayList, but nothing happens... I try to do it like in this topic how to update RecyclerView element from OnActivityResult 当我在方法onActivityResult上获得保留(带有对象的ArrayList)时,我调用了自定义更新方法,在此我更新了ArrayList,但是什么也没有发生...我试图像在本主题中那样, 如何从OnActivityResult更新RecyclerView元素
It`s my code : 这是我的代码:
Parent`s activity : 家长的活动:
ArrayList<Unswer> unswerFromMain;
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
//super.onActivityResult(requestCode, resultCode, data);
if (data==null){
Log.d("LOGO", "no unswer" );
return;
} else {
unswerFromMain = (ArrayList<Unswer>) data.getSerializableExtra("aboutGROUPS");
recyclerAdapter.updateAdapter(unswerFromMain);
}
}
} }
RecyclerAdapter class : RecyclerAdapter类:
private ArrayList<Unswer> getUnswer = new ArrayList<>();
public void updateAdapter (ArrayList<Unswer> updateUnswer){
getUnswer = updateUnswer;
notifyDataSetChanged();
}
Try 尝试
getUnswer.clear()
getUnswer.addAll(updateUnswer);
instead of 代替
getUnswer = updateUnswer;
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