在片段里面的Viewpageindicator

Question

使用SherlockActionBar,我创建了一个很好的界面.在横向模式中,您会看到listfragment和"detailsfragment".

现在我想在详细信息框架中添加一个viewpageindicator(https://github.com/JakeWharton/Android-ViewPagerIndicator),所以我看起来像这样:

--------------------------|
|_1___|TAB1 | TAB2 | ETC  |
|_2___|-------------------|
|_3___|Example: content   |
|_4___| TAB1 of listitem 1| 
|_5___|___________________|

我希望这很清楚.基本上我会在片段内部使用FragmentManager/TabPageIndicator.

我有可能吗？我想不出来.. :(

谢谢!

Answer 1

你不应该把一个Fragment内部Fragment.但是,您可以ViewPager在片段内部放置并获得您正在寻找的结果.

我刚刚为我的一个应用程序面临同样的问题(只是我希望ViewPager包含一些ListViews).这是最终结果(见行;红色包含Fragment,蓝色ViewPagerIndicator,绿色ViewPager):

我通过以下步骤完成了这项工作.Fist,对于detail-fragment,我创建了以下XML文件:

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

    <com.viewpagerindicator.TabPageIndicator
        android:id="@+id/viewpagerIndicator"
        android:layout_height="wrap_content"
        android:layout_width="match_parent" />
    <android.support.v4.view.ViewPager
        android:id="@+id/viewpager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

</LinearLayout>

然后,我设置了一个自定义的PagerAdapter来填充ViewPager和TabPageIndicator:

public class MainPagerAdapter extends PagerAdapter implements TitleProvider {

    // constructor
    ...        

    @Override
    public void destroyItem(ViewGroup container, int position, Object object) {
        // remove the object (we don't want to keep it in memory as it will get recreated and cached when needed)

        ViewPager viewPager = (ViewPager) container;
        View view = (View) object;
        viewPager.removeView(view);
    }

    @Override
    public Object instantiateItem(View pager, final int position) {
        // inflate your 'content'-views here (in my case I added a listview here)
        // similar to a listadapter's `getView()`-method

        View wrapper = ... // inflate your layout
        ... // fill your data to the appropriate views

        ((ViewPager) pager).addView(wrapper);
    }

    public String getTitle(int position) {
        ... // return the title of the tab
    }
}

接下来,在我的片段中,我设置了以下内容:

public class MainFragment extends Fragment {

    private MainPagerAdapter pagerAdapter;
    private TabPageIndicator mIndicator;
    private ViewPager viewPager;

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        View detailsFrame = context.findViewById(R.id.details_fragment);
        // setup your adapter: pass data, etc.
        this.pagerAdapter = new MainPagerAdapter(...);
        this.viewPager = (ViewPager) context.findViewById(R.id.viewpager);
        viewPager.setAdapter(pagerAdapter);

        this.mIndicator = (TabPageIndicator) context.findViewById(R.id.viewpagerIndicator);
        this.mIndicator.setViewPager(viewPager);
    }
}