Android Viewpager未显示在RecyclerView行内
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.javaAndroid 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
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
和框架布局中设置了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);