无法在片段内滚动RecyclerView?

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我在将RecyclerView(在行中使用cardviews)集成到片段中时遇到麻烦.由于某些原因，我无法滚动名片视图?拜托，有什么建议吗?

I am having troubles integrating a RecyclerView (using cardviews for the rows) inside a fragment. For some reason I cannot scroll the card view? Please, any suggestions?

这是我的应用程序设计:

This is my app design:

这是我的片段代码:

public class PageFragment2 extends Fragment { public static final String ARG_PAGE2 = "ARG_PAGE"; private int mPage2; public static PageFragment2 newInstance(int page) { Bundle args = new Bundle(); args.putInt(ARG_PAGE2, page); PageFragment2 fragment = new PageFragment2(); fragment.setArguments(args); return fragment; } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mPage2 = getArguments().getInt(ARG_PAGE2); Log.d("MainActivity", "onCreate" + mPage2); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_page2,container,false); RecyclerView recList = (RecyclerView) view; recList.setHasFixedSize(true); LinearLayoutManager llm = new LinearLayoutManager(getActivity()); recList.setLayoutManager(llm); ArrayList<String> names = new ArrayList<>(); names.add("Georgi Koemdzhiev"); names.add("Mariya Menova"); names.add("Simeon Simeonov"); names.add("Ivan Dqkov"); names.add("Dymityr Vasilev"); names.add("Petar Dimov"); CardAdapter adapter = new CardAdapter(names); recList.setAdapter(adapter); Log.d("MainActivity","onCreateView" + mPage2); return view; } }

这是我的片段XML代码:

This is my fragment XML code:

<android.support.v7.widget.RecyclerView android:id="@+id/cardList" android:layout_width="match_parent" android:layout_height="match_parent" android:clipToPadding="true" xmlns:android="schemas.android/apk/res/android"/>

我的activity_main布局:

My activity_main layout:

<android.support.design.widget.CoordinatorLayout xmlns:android="schemas.android/apk/res/android" xmlns:app="schemas.android/apk/res-auto" xmlns:tools="schemas.android/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:fitsSystemWindows="true" tools:context="koemdzhiev.newtablayouttest.MainActivity"> <android.support.design.widget.AppBarLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:theme="@style/AppTheme.AppBarOverlay"> <android.support.v7.widget.Toolbar android:id="@+id/toolbar" android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="?attr/colorPrimary" app:popupTheme="@style/AppTheme.PopupOverlay"/> <android.support.design.widget.TabLayout android:id="@+id/sliding_tabs" android:layout_width="match_parent" android:layout_height="wrap_content"/> <android.support.v4.view.ViewPager android:id="@+id/viewpager" android:layout_width="match_parent" android:layout_height="0px" android:layout_weight="1" android:background="@android:color/white" /> </android.support.design.widget.AppBarLayout> <include layout="@layout/content_main"/>

推荐答案

带标签的活动"模板中的活动(包含包含您的Fragment的ViewPager)使用AppBarLayout.

The Activity from the "Tabbed Activity" template, which contains the ViewPager which is containing your Fragment, uses an AppBarLayout.

此AppBarLayout正在窃取垂直运动，因为它不知道ViewPager内是否存在可滚动的嵌套视图(RecyclerView).从活动"的XML文件中删除AppBarLayout(可以将TabLayout和ToolBar移到上一级).

This AppBarLayout is stealing the vertical movement, since it doesn't know there's a scrollable nested view (the RecyclerView) inside the ViewPager. Remove the AppBarLayout from the XML file of your Activity (you can take the TabLayout and ToolBar to the upper level).