tablayout在另一个tablayout

Question

先生，我有一个tablayout与4片段。在其中一个片段中，我希望一个tablayout显示furthur子页面，但只要我初始化tablayout内部片段它会给出一个异常。是他们的任何方式这样做或任何其他替代方案来满足我的要求。

public class Fragment4 extends Fragment { 
RecyclerView recyclerView; 
ArrayList<String> arrayList; 
TabLayout tabLayout; 
ViewPager viewPager; 
// TextView textView; 
@Nullable 
@Override 
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { 
    View v=inflater.inflate(R.layout.fragment4,container,false); 

    tabLayout= (TabLayout) v.findViewById(R.id.tabLayout2); 
    viewPager = (ViewPager) v.findViewById(R.id.pagers); 
    ViewAdapter adapter = new   ViewAdapter(getActivity().getSupportFragmentManager()); 
    viewPager.setAdapter(adapter); 

    tabLayout.setupWithViewPager(viewPager); 
    TabLayout.Tab news = tabLayout.newTab(); 
    TabLayout.Tab Chats = tabLayout.newTab(); 
    TabLayout.Tab Contacts = tabLayout.newTab(); 
    TabLayout.Tab Notes = tabLayout.newTab(); 
    news.setText("News Feed"); 
    Chats.setText("Chats"); 
    Contacts.setText("Contacts"); 
    Notes.setText("Notes"); 
    tabLayout.addTab(news, 0); 
    tabLayout.addTab(Chats, 1); 
    tabLayout.addTab(Contacts, 2); 
    tabLayout.addTab(Notes, 3); 
    tabLayout.setTabGravity(TabLayout.GRAVITY_FILL); 
    tabLayout.setTabTextColors(ContextCompat.getColorStateList(getActivity(), R.color.mdtp_button_color)); 
    tabLayout.setSelectedTabIndicatorColor(ContextCompat.getColor(getActivity(), R.color.colorAccent)); 
    viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout)); 
    return v; 


} 


} 

---

这里是我的堆栈跟踪：

FATAL EXCEPTION: main 
Process: com.example.shivambhusri.fireapp, PID: 3543 
    java.lang.ClassCastException: android.widget.TableLayout cannot be cast to android.support.design.widget.TabLayout 
    at com.example.shivambhusri.fireapp.Fragment4.onCreateView(Fragment4.java:42) 
    at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) 
    at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) 
    at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:742) 
    at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617) 
    at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570) 
    at android.support.v4.app.FragmentStatePagerAdapter.finishUpdate(FragmentStatePagerAdapter.java:164) 
    at android.support.v4.view.ViewPager.populate(ViewPager.java:1177) 
    at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:608) 
    at android.support.v4.view.ViewPager.setCurrentItemInternal(ViewPager.java:570) 
    at android.support.v4.view.ViewPager.setCurrentItem(ViewPager.java:551) 
    at android.support.design.widget.TabLayout$ViewPagerOnTabSelectedListener.onTabSelected(TabLayout.java:2008) 
    at android.support.design.widget.TabLayout.selectTab(TabLayout.java:1025) 
    at android.support.design.widget.TabLayout.selectTab(TabLayout.java:995) 
    at android.support.design.widget.TabLayout$Tab.select(TabLayout.java:1272) 
    at android.support.design.widget.TabLayout$TabView.performClick(TabLayout.java:1377) 
    at android.view.View$PerformClick.run(View.java:20329) 
    at android.os.Handler.handleCallback(Handler.java:739) 
    at android.os.Handler.dispatchMessage(Handler.java:95) 
    at android.os.Looper.loop(Looper.java:135) 
    at android.app.ActivityThread.main(ActivityThread.java:5912) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at java.lang.reflect.Method.invoke(Method.java:372) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200) 

Answer 1

不建议使用这种类型的布局（一tablayout内tablayout），因为它会导致审美和可用性问题。