ViewPager中的Recyclerviews

ViewPager中的Recyclerviews

您必须扩展

FragmentPagerAdapter

或

FragmentStatePagerAdapter

为了轻松嵌入RecyclerView。如果要在其生命周期内更新ViewPager内容，则强烈建议使用
FragmentStatePagerAdapter

您将必须创建包含的其他片段布局

RecyclerView

。

如果您希望更新您

ViewPager

与

SwipeRefreshLayout

，不与包装它

SwipeRefreshLayout

。相反，您必须具有

SwipeRefreshLayout

内部片段布局。

因此，对于您的片段，您可能会获得以下xml：

<?xml version="1.0" encoding="utf-8"?><android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/listRefresh"    android:layout_width="match_parent"    android:layout_height="match_parent">    <android.support.v7.widget.RecyclerView        android:id="@+id/categoryList"        android:scrollbars="vertical"        android:layout_width="match_parent"        android:layout_height="match_parent"/></android.support.v4.widget.SwipeRefreshLayout>

并创建其他Fragment类，该类将扩充该布局并实现方法，您将需要更新刷新指示器状态。

在这里可以找到一个较旧的示例：http : //developer.android.com/training/implementing-
navigation/lateral.html

如果您想将ViewPager与新的支持库TabLayout连接起来，则很容易做到这一点：

tabLayout.setupWithViewPager(viewPager);

最后，如果您要更新“碎片化的”

ViewPager

，请不要尝试重置适配器，因为片段不是通过适配器而是通过进行管理

FragmentManager

。更新相应内容比较明智

RecyclerViews

public class MyFragmentedPagerAdapter extends FragmentStatePagerAdapter {    private final TabLayout mTabLayout;    private final SwipeRefreshLayout.onRefreshListener mRefreshListener;    private Vector<PriceListFragment> fragmentList;    private Vector<String> titles;    public MyFragmentedPagerAdapter(FragmentManager fm, MyComplexData data, onCartActionListener listener, TabLayout tabLayout, SwipeRefreshLayout.onRefreshListener refreshListener) {        super(fm);        mTabLayout = tabLayout;        // external refresh listener, that will trigger an updateData()         mRefreshListener = refreshListener;        fragmentList = new Vector<>();        titles = new Vector<>();        updateData(data);    }    public void updateData(MyComplexData data) {        boolean updateTabs = false;        boolean hasNewData = false;        Vector<String> newTitles = new Vector<>();        int position = 0;        for(TabContents tabContents : data.getTabContents()) { if(tabContents.getListContents() == null)     continue; hasNewData = true; boolean isNewFragment; MyFragment fragment; try {     fragment = fragmentList.get(position);     isNewFragment = false; } catch (ArrayIndexOutOfBoundsException e) {     fragment = new MyFragment();     isNewFragment = true; } // Update the data, title and hide update indicator of SwipeRefreshLayout fragment.setTabContents(tabContents); newTitles.add(tabContents.getName()); if(isNewFragment) {     fragment.setRefreshListener(mRefreshListener);     fragmentList.add(fragment); } position++;        }        if(!hasNewData) return;        // we need to decide, whether to update tabs        if(titles.size() != newTitles.size()) { updateTabs = true;        } else { for(position = 0; position < titles.size(); position++) {     if(!titles.get(position).equals(newTitles.get(position))) {         updateTabs = true;         break;     } }        }        titles = newTitles;        notifyDataSetChanged();        if(updateTabs) mTabLayout.setTabsFromPagerAdapter(this);    }    @Override    public Fragment getItem(int position) {        return fragmentList.get(position);    }    // You need to override this method as well    @Override    public int getItemPosition(Object object) {        MyFragment fragment = (MyFragment) object;        String title = (String) fragment.getTitle();        int position = titles.indexOf(title);        if (position >= 0) { return position;        } else { return POSITION_NONE;        }    }    @Override    public int getCount() {        return titles.size();    }    @Override    public CharSequence getPageTitle(int position) {        return fragmentList.get(position).getTitle();    }}

您的

MyFragment

课程必须实现

getTitle()

方法。