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[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
设置RecyclerViewAdapter时出现一些问题
我得到错误
java.lang.NullPointerException:尝试在空对象引用上调用虚拟方法“ android.content.Context android.support.v4.app.FragmentActivity.getApplicationContext()”
在mLayoutManager = new LinearLayoutManager(getActivity().getApplicationContext());
如何修复
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);
仅使用此mLayoutManager = new LinearLayoutManager(getActivity()); 如果您正在活动中编写此代码,请使用getApplicationContext()
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