片段内的片段选项卡 [英] Fragment Tabs inside Fragment

问题描述

我的主活动"中有一个使用片段"(带有材料设计")选项卡的操作栏导航，如下所示，效果很好，但是现在我希望片段中具有选项卡"导航...

I have in my Main Activity an Action bar navigation using tabs using Fragments (with Material Design), as below which works well, but now I wish to have Tab navigation within my Fragments...

// Add Fragments to Tabs in Main Activity
private void setupViewPager(ViewPager viewPager) {
    Adapter adapter = new Adapter(getSupportFragmentManager());
    adapter.addFragment(new FeedsFragment(), "Latest Updates");
    adapter.addFragment(new ClubTeamsFragment(), "Club Teams");
    adapter.addFragment(new FixturesFragment(), "Fixtures");
    adapter.addFragment(new ResultsFragment(), "Results");
    adapter.addFragment(new ClubFieldsFragment(), "Club Fields");
    viewPager.setAdapter(adapter);
}

我很确定TabHost现在已被弃用.

I'm pretty sure that TabHost is now deprecated.

我希望获得附件的图像.蓝色选项卡位于主要活动"级别，灰色日期选项卡位于所选的片段视图中.

I wish to achieve the attached image. The blue tabs are at the Main Activity level and the gray date tabs are in the selected fragment view.

我已经阅读了一些有关使用Tab Host或Fragment Activity的帖子，还是我使用了扩展到Fragment的Activity?

I have read a few post about using Tab Host or Fragment Activity, or do I use Activity that is extended to Fragment?

推荐答案

请参阅下面的答案，该答案是我在MainActivity的片段选项卡中使用片段选项卡实现的

See below answer that I achieved with using fragment tabs inside fragment tabs that are in my MainActivity

使用 getChildFragmentManager()

public class FixturesTabs extends Fragment {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setRetainInstance(true);
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fixtures_new_tabs,container, false);
    // Setting ViewPager for each Tabs
    ViewPager viewPager = (ViewPager) view.findViewById(R.id.viewpager);
    setupViewPager(viewPager);
    // Set Tabs inside Toolbar
    TabLayout tabs = (TabLayout) view.findViewById(R.id.result_tabs);
    tabs.setupWithViewPager(viewPager);


    return view;

}


// Add Fragments to Tabs
private void setupViewPager(ViewPager viewPager) {


    Adapter adapter = new Adapter(getChildFragmentManager());
    adapter.addFragment(new TodaysFixturesFragment(), "Today");
    adapter.addFragment(new WeekFixturesFragment(), "Week");
    adapter.addFragment(new MonthFixturesFragment(), "Month");
    adapter.addFragment(new AllFixturesFragment(), "Month");
    adapter.addFragment(new MyTeamsFixturesFragment(), "My Teams");
    viewPager.setAdapter(adapter);



}

static class Adapter extends FragmentPagerAdapter {
    private final List<Fragment> mFragmentList = new ArrayList<>();
    private final List<String> mFragmentTitleList = new ArrayList<>();

    public Adapter(FragmentManager manager) {
        super(manager);
    }

    @Override
    public Fragment getItem(int position) {
        return mFragmentList.get(position);
    }

    @Override
    public int getCount() {
        return mFragmentList.size();
    }

    public void addFragment(Fragment fragment, String title) {
        mFragmentList.add(fragment);
        mFragmentTitleList.add(title);
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return mFragmentTitleList.get(position);
    }
}



}

我的XML名为"fixtures_new_tabs.xml"以匹配膨胀的布局

And my XML named "fixtures_new_tabs.xml" to match the inflated layout

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">


<android.support.design.widget.CoordinatorLayout
    android:id="@+id/main_content"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.TabLayout
            android:id="@+id/result_tabs"
            android:background="@color/grey"
            app:tabTextColor="@color/medium_grey"
            app:tabSelectedTextColor="@color/colorPrimary"
            app:tabIndicatorColor="@color/colorPrimary"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:tabMode="scrollable"/>
    </android.support.design.widget.AppBarLayout>

    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />

</android.support.design.widget.CoordinatorLayout>

</RelativeLayout>

希望这可以帮助或指出其他人的解决方案.

Hope this helps or points others in the direction for their solution..

P.S.如果实施此操作后出现白屏，则可能是在其子片段中添加了相同的父片段.

P.S. If you get a white screen after implementing this, you might have added the same parent fragment to it's child fragment.

这篇关于片段内的片段选项卡的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！