![](/img/trans.png)
[英]Attempt to invoke virtual method 'android.content.Context android.content.Context.getApplicationContext()' on a null object reference
[英]Attempt to invoke virtual method 'android.content.Context android.support.v4.app.FragmentActivity.getApplicationContext()' android
設置RecyclerViewAdapter時出現一些問題
我得到錯誤
java.lang.NullPointerException:嘗試在空對象引用上調用虛擬方法“ android.content.Context android.support.v4.app.FragmentActivity.getApplicationContext()”
在mLayoutManager = new LinearLayoutManager(getActivity().getApplicationContext());
如何修復
for (ProfileFeedListModelTwo.PostBean.PollBean pollBean : pp){
pollBeanArrayList.add(pollBean);}
adapDetailTopicPoll = new AdapDetailTopicPoll(pollBeanArrayList,getContext());
mLayoutManager = new LinearLayoutManager(getActivity().getApplicationContext());
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setAdapter(adapDetailTopicPoll);
僅使用此mLayoutManager = new LinearLayoutManager(getActivity()); 如果您正在活動中編寫此代碼,請使用getApplicationContext()
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