android - fragment 内的 Tablayout

Question

我正在尝试在我的一个 fragment 中添加 tablayout，但是尽管我在网络上找到了所有内容，但似乎没有任何东西可以正常工作。在其他 fragment 中，我不想看到选项卡布局。

主页 fragment xml:

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


    <android.support.design.widget.TabLayout
        android:id="@+id/home_tabs"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        app:tabMode="scrollable"
        android:minHeight="?attr/actionBarSize"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>

    <android.support.v4.view.ViewPager
        android:id="@+id/home_viewpager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
         />

</LinearLayout> 

HomeFragment代码:

公共(public)类 HomeFragment 扩展 fragment {

private TabLayout _homeTabLayout;
private ViewPager _homeViewPager;


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

    final TabLayout tabLayout = (TabLayout) v.findViewById(R.id.home_tabs);
    final ViewPager viewPager = (ViewPager) v.findViewById(R.id.home_viewpager);
    ViewPagerAdapter adapter = new ViewPagerAdapter(getFragmentManager());
    adapter.addFragment(new SyncedEpisodesTabFragment(), "One");
    adapter.addFragment(new AvailableEpisodesTabFragment(), "Two");

    viewPager.setAdapter(adapter);

    tabLayout.setupWithViewPager(viewPager);


    return v;

}

private void setupViewPager(ViewPager viewPager) {
    ViewPagerAdapter  adapter = new ViewPagerAdapter (getChildFragmentManager());
    adapter.addFragment(new AvailableEpisodesTabFragment(), "PHOTOS");
    adapter.addFragment(new SyncedEpisodesTabFragment(), "HI-FIVES");
    viewPager.setAdapter(adapter);
}

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

    public ViewPagerAdapter(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);
    }
}

应用栏主.xml

    <?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.follow.series.activities.MainActivity">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar_layout"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        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" />

                 <!--I'm inserting the tab layout here-->


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

    <FrameLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        app:srcCompat="@android:drawable/ic_dialog_email" />



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

在这种情况下，我只看到带有没有标签的文本的 viewpager当我在工具栏中添加选项卡布局时，我一直都能看到选项卡。

Answer 1

在 Muhammad Hafiq Iqmal 的回答下，我设法通过添加另一个包含工具提示和 fragment 容器的线性布局来解决这个问题

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.follow.series.activities.MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar_layout"
            android:layout_height="wrap_content"
            android:layout_width="match_parent"
            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.AppBarLayout>



        <FrameLayout
            android:id="@+id/fragment_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>


    </LinearLayout>


    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        app:srcCompat="@android:drawable/ic_dialog_email" />

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

我没有注意到这一点，但现在我的工具栏有问题，它底部有一个阴影，即使它在选项卡布局下方也是如此。我尝试在选项卡布局和工具栏元素中使用 elivation 属性，但没有成功