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Android 我的代码有什么问题:导致java.lang.NullPointerException_Android_Fragment_Android Recyclerview_Android Linearlayout - Fatal编程技术网

Android 我的代码有什么问题:导致java.lang.NullPointerException

Android 我的代码有什么问题:导致java.lang.NullPointerException,android,fragment,android-recyclerview,android-linearlayout,Android,Fragment,Android Recyclerview,Android Linearlayout,你能看到我代码中的问题吗?我得到一个例外: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference 使用此代码: RecyclerV

你能看到我代码中的问题吗?我得到一个例外:

java.lang.NullPointerException:  
Attempt to invoke virtual method 'void android.support.v7.widget.RecyclerView.setLayoutManager(android.support.v7.widget.RecyclerView$LayoutManager)' on a null object reference
使用此代码:

RecyclerView recyclerView;
RecyclerView.Adapter adapter;

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.latest_events_fragment, container, false);

    recyclerView = (RecyclerView)view.findViewById(R.id.events_recycler);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
    recyclerView.setLayoutManager(linearLayoutManager );
    list.add("A");
    list.add("B");
    list.add("C");;
    // specify an adapter
    adapter = new EventsRecyclerAdapter(list);
    recyclerView.setAdapter(adapter);


    return view;
}
这是我的.xml文件,名为events_list.xml `


`

您的回收器视图对象为空。在此处查找时,请确保使用了正确的id:

recyclerView = (RecyclerView)view.findViewById(R.id.events_recycler);

如果id正确,请确保您使用的是您想要的布局。

您可能在recyclerview id上犯了错误。发布您的布局是真的吗?在评论中?把它贴在你的问题上,伙计。这会更容易阅读