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Android Viewpager未显示在RecyclerView行内_Android_Android Viewpager_Android Recyclerview - Fatal编程技术网

Android Viewpager未显示在RecyclerView行内

Android Viewpager未显示在RecyclerView行内,android,android-viewpager,android-recyclerview,Android,Android Viewpager,Android Recyclerview,我想制作一个“照片详细信息”活动或片段,在上面和下面显示照片,并显示相关照片的评论和喜好(2个选项卡)。 为了使屏幕“可滚动”,以便我可以在评论和喜欢上上上下滚动,并向左/向右滑动,我决定使用带有2行的RecyclerView: 第1行:照片(ImageView) 第2行:滑动布局+查看寻呼机+碎片页面编辑器 代码编译并运行,显示图像和幻灯片布局,但不显示ViewPager 因此,我的两个主要问题是: 1-我的实施有什么问题 2-对于我想要实现的目标,是否有其他或更好的解决方案 注意:我不想使用

我想制作一个“照片详细信息”活动或片段,在上面和下面显示照片,并显示相关照片的评论和喜好(2个选项卡)。 为了使屏幕“可滚动”,以便我可以在评论和喜欢上上上下滚动,并向左/向右滑动,我决定使用带有2行的RecyclerView:

第1行:照片(ImageView)

第2行:滑动布局+查看寻呼机+碎片页面编辑器

代码编译并运行,显示图像和幻灯片布局,但不显示ViewPager

因此,我的两个主要问题是:

1-我的实施有什么问题

2-对于我想要实现的目标,是否有其他或更好的解决方案

注意:我不想使用带有标题的listView。我想使用RecyclerView,因为它更容易在网络的顶部/底部添加元素

PhotoDetailsActivity.java

public class MainActivity extends ActionBarActivity {
    RecyclerView recyclerViewPhotoDetails;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        this.recyclerViewPhotoDetails = (RecyclerView) this.findViewById(R.id.recycler_view_photo_details);
        this.recyclerViewPhotoDetails.setLayoutManager(new LinearLayoutManager(this));
        this.recyclerViewPhotoDetails.setAdapter(new PhotoDetailsRecyclerAdapter(this.getSupportFragmentManager()));
    }
}
PhotoDetailsRecyclerAdapter.java

public class PhotoDetailsRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private static final int ROW_IMAGE = 0;
    private static final int ROW_LIKES_AND_COMMENTS = 1;
    private static final int TOTAL_ROWS = 2;

    private FragmentManager fragmentManager;

    public PhotoDetailsRecyclerAdapter(FragmentManager fragmentManager) {
        this.fragmentManager = fragmentManager;
    }

    @Override
    public int getItemViewType(int position) {
        if (position == 0) {
            return ROW_IMAGE;
        } else {
            return ROW_LIKES_AND_COMMENTS;
        }
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if(viewType == ROW_IMAGE) {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_image, parent, false);
            return new ImageViewHolder(view);
        } else {
            View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_comments_and_likes, parent, false);
            return new CommentsAndLikesViewHolder(view);
        }
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int i) {
    }

    @Override
    public int getItemCount() {
        return TOTAL_ROWS;
    }

    public class ImageViewHolder extends RecyclerView.ViewHolder {
        public ImageViewHolder(View itemView) {
            super(itemView);
        }
    }

    public class CommentsAndLikesViewHolder extends RecyclerView.ViewHolder {
        private SlidingTabLayout slidingTabLayout;
        private ViewPager viewPager;

        public CommentsAndLikesViewHolder(View view) {
            super(view);

            slidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tab_layout_comments_and_likes);
            viewPager = (ViewPager) view.findViewById(R.id.view_pager_comments_and_likes);

            viewPager.setAdapter(new CommentsAndLikesPagerAdapter(fragmentManager));
            slidingTabLayout.setDistributeEvenly(true);
            slidingTabLayout.setViewPager(viewPager);
        }
    }
}
public class CommentsAndLikesPagerAdapter extends FragmentPagerAdapter {
    private static final int TOTAL_TABS = 2;

    private String[] tabs = { "comments", "likes" };

    public CommentsAndLikesPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        if(position == 0) {
            return new CommentsFragment();
        } else {
            return new LikesFragment();
        }
    }

    @Override
    public CharSequence getPageTitle(int position) {
        return tabs[position];
    }

    @Override
    public int getCount() {
        return TOTAL_TABS;
    }
}
CommentsFragment.java

 public class CommentsFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_comments, container, false);
        RecyclerView recyclerViewComments = (RecyclerView) view.findViewById(R.id.recycler_view_comments);
        recyclerViewComments.setLayoutManager(new LinearLayoutManager(this.getActivity()));
        recyclerViewComments.setAdapter(new CommentsRecyclerAdapter());
        return view;
    }
}
public class LikesFragment extends Fragment {
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_likes, container, false);
        RecyclerView recyclerViewLikes = (RecyclerView) view.findViewById(R.id.recycler_view_likes);
        recyclerViewLikes.setLayoutManager(new LinearLayoutManager(this.getActivity()));
        recyclerViewLikes.setAdapter(new LikesRecyclerAdapter());
        return view;
    }
}
fragment_comments.xml

<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recycler_view_comments"
    android:scrollbars="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />
fragment_.xml

<?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"
    >

    <org.bitbucket.androidapp.SlidingTabLayout
        android:id="@+id/sliding_tab_layout_comments_and_likes"
        android:layout_width="match_parent"
        android:layout_height="48dp"
        android:background="@android:color/darker_gray"
        />

    <android.support.v4.view.ViewPager
        android:id="@+id/view_pager_comments_and_likes"
        android:layout_height="match_parent"
        android:layout_width="match_parent"
        android:background="@android:color/holo_blue_dark"
        />

</LinearLayout>
<android.support.v7.widget.RecyclerView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/recycler_view_likes"
    android:scrollbars="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    />

layou_comment.xml

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Comment"
        />

</RelativeLayout>

layout_like.xml

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

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Like"
        />

</RelativeLayout>


尝试将您的ViewPager设置为硬编码高度,而不是包装内容或匹配父项。我遇到了一个奇怪的问题,即使我的ViewPager已被填充,我的屏幕仍然是空白的。

回答您的第一个问题“我的实现有什么问题。”

您确实在
RelativeLayout
框架布局中设置了
android:orientation=“vertical”


也许解决办法是不让他们在那里。请让我知道这是否是合适的修复方法。

作为第二行,您必须使用线性布局,并在其中添加视图寻呼机以及显示注释和片段的tabhost小部件

您可以使用此处找到的库以更简单的方式实现相同的效果


如果您感兴趣,我可以提供更多详细信息。

您可以查看此代码并更新代码。我在我的项目中使用了这段代码并进行了工作必须在onBinViewHolder方法中将ViewPagerAdapter设置为viewpager。如果不起作用,我想提供帮助

RecylerviewAdapter
//替换视图的内容(由布局管理器调用)
@凌驾
公共无效onBindViewHolder(ViewHolder,int位置){
//-在此位置从数据集中获取元素
//-用该元素替换视图的内容
初始化视图(“Mustafa”,持有人,职位);
}
private void initializeViews(最终字符串对象、最终视图持有者、int位置){
holder.textViewCount.setText(“5”);
holder.imageViewStar.setImageResource(R.drawable.info);
holder.imageViewFavorite.setImageResource(R.drawable.info);
ViewPagerBondariesAdapter=新建ViewPagerBondariesAdapter(活动,新建ArrayList(),侦听器);
holder.viewPager.setAdapter(适配器);
holder.viewPager.setCliptoppadding(false);
holder.viewPager.setPadding(40,0,40,0);
}
视页雷达
/**
*穆斯塔法斯于2015年3月10日创建。
*/
公共类视图PagerBondariesAdapter扩展PagerAdapter{
私人ArrayList pagerItems;
私人充气机;
私人语境;
私有ViewPageWriteMcClickInterface侦听器;
公共ViewPagerBondariesAdapter(上下文上下文、ArrayList pagerItems、ViewPagerItemClickInterface回调){
超级();
this.pagerItems=pagerItems;
this.context=上下文;
this.listener=回调;
充气器=充气器。从(上下文);
}
@凌驾
公共对象实例化项(视图组容器,int位置){
LinearLayout布局=(LinearLayout)充气器。充气(R.layout.row_viewpager,container,false);
ImageView ImageView活动=(ImageView)布局.findViewById(R.id.ImageView\u活动);
TextView textViewCampaign=(TextView)layout.findViewById(R.id.TextView\u活动);
imageViewCampaign.setOnClickListener(新视图.OnClickListener(){
@凌驾
公共void onClick(视图v){
onViewPagerItemClick(1);
}
});
//textViewCampaign.setText(“Lorem ipsum door sit amet”+“aliquam nec nisi in Lorem”);
setImageDrawable(context.getResources().getDrawable(R.drawable.nusret));
container.addView(布局);
返回布局;
}
@凌驾
公共项(视图组容器、int位置、对象){
((ViewPager)容器)。移除视图((视图)对象);
}
@凌驾
public int getCount(){
返回5;
}
@凌驾
公共布尔值isViewFromObject(视图,对象obj){
返回视图.equals(obj);
}
}
recylerview xml

recylerview行xml

Viewpager行xml
更新ViewPager高度,recyclerView的项目需要特定高度

<android.support.v4.view.ViewPager
    android:id="@+id/view_pager"
    android:layout_height="300dp"
    android:layout_width="match_parent"
    android:background="@android:color/holo_blue_dark" />

我也有同样的问题,在这里通读了所有的答案。我将描述如何解决这个问题

只是一些背景,我有一个顶部带有选项卡的viewpager,当应用程序启动时会显示3个片段

其中一个片段内部是一个recyclerview,其中一个viewpager是视图中的一个项目-让我们将该片段称为:

我将此内部片段称为A以设置RECYCLERVIEW适配器:

FragmentOuterAdapter fragmentOuterAdapter  = new FragmentOuterAdapter(getActivity(), this ); //this here refers to Fragment A - note this as this is IMPORTANT
mRecyclerView.setAdapter(fragmentOuterAdapter);
在我的RECYCLERVIEW适配器中,我调用以下命令来创建viewHolder:

class ViewPagerViewHolder extends RecyclerView.ViewHolder {
    ViewPager viewPager;
    public ViewPagerViewHolder(View view) {
        super(view);
        viewPager = (ViewPager) view.findViewById(R.id.viewPager);
    }
}
        FragmentManager fragmentManager = fragment.getChildFragmentManager();
        ((ViewPagerViewHolder) holder).viewPager.setAdapter(new SubViewFragmentPagerAdapter(fragmentManager));
在onCreateViewHolder下,我初始化视图并获取其句柄

重要的代码在onBindViewHolder下:

class ViewPagerViewHolder extends RecyclerView.ViewHolder {
    ViewPager viewPager;
    public ViewPagerViewHolder(View view) {
        super(view);
        viewPager = (ViewPager) view.findViewById(R.id.viewPager);
    }
}
        FragmentManager fragmentManager = fragment.getChildFragmentManager();
        ((ViewPagerViewHolder) holder).viewPager.setAdapter(new SubViewFragmentPagerAdapter(fragmentManager));
在FragmentOuteradPter中传递的片段对象出现在这里,我使用该对象获取ChildFragmentManager()

因为您使用的是在fragm中显示片段
<?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="wrap_content"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/imageview_campaign"
        android:layout_width="match_parent"
        android:layout_height="@dimen/parallax_image_height"
        android:layout_marginLeft="4dp"
        android:layout_marginRight="4dp"
        android:adjustViewBounds="true"
        android:scaleType="centerCrop" />

    <TextView
        android:id="@+id/textview_campaign"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:paddingLeft="4dp"
        android:paddingRight="4dp"
        android:paddingTop="8dp"
        android:text="Lorem ipsum dolor sit amet
aliquam nec nisi in lorem"
        android:textSize="@dimen/standart_text_size" />
</LinearLayout>
<android.support.v4.view.ViewPager
    android:id="@+id/view_pager"
    android:layout_height="300dp"
    android:layout_width="match_parent"
    android:background="@android:color/holo_blue_dark" />
FragmentOuterAdapter fragmentOuterAdapter  = new FragmentOuterAdapter(getActivity(), this ); //this here refers to Fragment A - note this as this is IMPORTANT
mRecyclerView.setAdapter(fragmentOuterAdapter);
class ViewPagerViewHolder extends RecyclerView.ViewHolder {
    ViewPager viewPager;
    public ViewPagerViewHolder(View view) {
        super(view);
        viewPager = (ViewPager) view.findViewById(R.id.viewPager);
    }
}
        FragmentManager fragmentManager = fragment.getChildFragmentManager();
        ((ViewPagerViewHolder) holder).viewPager.setAdapter(new SubViewFragmentPagerAdapter(fragmentManager));
pagerHolder.pager.setId(position);
RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
recyclerview.setLayoutManager(new LinearLayoutManager(context,
                        LinearLayoutManager.HORIZONTAL,false));
recyclerview.setAdapter(adapter);
SnapHelper snapHelper = new PagerSnapHelper();
snapHelper.attachToRecyclerView(recyclerView);