Viewpager没有显示在RecyclerView行内 [英] Viewpager not showing inside RecyclerView row
问题描述
我想进行照片详细信息"活动或片段，在该照片或片段中，我在照片的顶部和下方显示aViewpPager，该视图同时显示相关照片的评论和喜欢的照片(2个选项卡). 为了使屏幕可滚动"，以便我可以上下滚动评论和点赞，并向左/向右滑动，我决定使用带有两行的RecyclerView:
I want to make a 'Photo details' activity or fragment where i display the photo on top and below it aViewpPager that display both comments and likes of the related photo(2 tabs). In order to make the screen 'Scrollable' so i can scroll up/down on both comments and likes and slide left/right i decided to use a RecyclerView with 2 rows :
第1行:照片(ImageView).
ROW 1 : The photo (ImageView).
第2行:SlidingTabLayout + ViewPager + FragmentPagerAdapter.
ROW 2 : SlidingTabLayout + ViewPager + FragmentPagerAdapter.
代码编译并运行，显示图像和slideTabLayout，但不显示ViewPager.
The code compile and run, display the image and the slidingTabLayout but not the ViewPager.
所以我的两个主要问题是:
So my two main questions are :
1-我的实现有什么问题.
1-What's wrong with my implementation.
2-对于我想要实现的目标，是否有替代或更好的解决方案?
2-Is there an alternative or better solution for what i want to achieve ?
注意::我不想使用带有标题的listView.我想使用RecyclerView，因为从网络的顶部/底部添加元素会更容易.
Note : I don't want to use a listView with header.I want to use RecyclerView because it's easier to add elements on top/bottom from network.
PhotoDetailsActivity.java
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()));
}
}
PhotosDetailsRecyclerAdapter.java
PhotosDetailsRecyclerAdapter.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);
}
}
}
activity_main.xml
activity_main.xml
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/recycler_view_photo_details"
android:scrollbars="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
layout_image.xml
layout_image.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<ImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:src="@drawable/img"
/>
</FrameLayout>
layout_comments_and_likes.xml
layout_comments_and_likes.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>
CommentsAndLikesPagerAdapter.java
CommentsAndLikesPagerAdapter.java
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
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;
}
}
fragment_comments.xml
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"
/>
LikesFragment.java
LikesFragment.java
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_likes.xml
fragment_likes.xml
<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"
/>
layout_comment.xml
layout_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
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>
推荐答案
我已经遇到了这个问题，并通过为每个ViewPager设置ID来解决了这个问题:) ViewPager不允许在同一片段中共享ID，即使它是recyclerview上下文的一部分也是如此.
I've faced this problem and resolved this by set ID for each ViewPager :) ViewPager does not allow sharing of the id in the same fragment, even if it is part of a recyclerview context.
pagerHolder.pager.setId(position);
这篇关于Viewpager没有显示在RecyclerView行内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！
