垂直RecyclerView中的动态不同图像水平RecyclerView，如Google Play商店

我一直在关注本教程：

http://android-pratap.blogspot.co.za/2015/12/horizo​​ntal-recyclerview-in-vertical.html

所有代码都在博客上。 我试图以不同方式实现的是，我不是一遍又一遍地加载相同的图像，而是想从3个不同的ArrayLists提取3组图像。 到目前为止，我使用1个ArrayList而不是加载18个图像，相同的6个图像被加载3次，因此它是3个重复的图像集，而不是所有3行中的唯一图像。

这就是我想要的 （如果可能的话，来自3个arraylists）：

img0 img1 img2 img3 img4 img5

img6 img7 img8 img9 img10 img11

img12 img13 img14 img15 img16 img17

这就是我得到的：

img0 img1 img2 img3 img4 img5

img0 img1 img2 img3 img4 img5

img0 img1 img2 img3 img4 img5

这是我编辑的代码：

DownloadImageTask.java

 import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.AsyncTask; import android.widget.ImageView; import java.io.InputStream; public class DownloadImageTask extends AsyncTask { ImageView bmImage; public DownloadImageTask(ImageView bmImage) { this.bmImage = bmImage; } protected Bitmap doInBackground(String... urls) { String urlDisplay = urls[0]; Bitmap mIcon11 = null; try { InputStream in = new java.net.URL(urlDisplay).openStream(); mIcon11 = BitmapFactory.decodeStream(in); } catch (Exception e) { e.printStackTrace(); } return mIcon11; } protected void onPostExecute(Bitmap result) { bmImage.setImageBitmap(result); } } 

SectionListDataAdapter.java

 import android.content.Context; import android.support.v7.widget.RecyclerView; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import java.util.ArrayList; import com.mypackage.appname.R; import com.mypackage.appname.common.asyncTasks.DownloadImageTask; import import com.mypackage.appname.common.models.SingleItemModel; public class SectionListDataAdapter extends RecyclerView.Adapter { private ArrayList itemsList; private Context mContext; //Images Start ArrayList urls = new ArrayList(); //Download Images DownloadImageTask dit; //Images End public SectionListDataAdapter(Context context, ArrayList itemsList) { this.itemsList = itemsList; this.mContext = context; } @Override public SingleItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_single_card, null); SingleItemRowHolder mh = new SingleItemRowHolder(v); return mh; } @Override public void onBindViewHolder(SingleItemRowHolder holder, int i) { SingleItemModel singleItem = itemsList.get(i); holder.tvTitle.setText(singleItem.getName()); urls.add("http:mywebsite.com/images/d"+i+".jpg"); //Set Splash Images START if(holder.itemImage!=null){ dit = new DownloadImageTask(holder.itemImage); Log.e("itemImage", String.valueOf(holder.itemImage)); try{ Log.e("imageUrls", urls.get(i)); dit.execute(urls.get(i)); } catch (NullPointerException e){ e.printStackTrace(); } } } @Override public int getItemCount() { return (null != itemsList ? itemsList.size() : 0); } public class SingleItemRowHolder extends RecyclerView.ViewHolder { protected TextView tvTitle; protected ImageView itemImage; public SingleItemRowHolder(View view) { super(view); this.tvTitle = (TextView) view.findViewById(R.id.tvTitle); this.itemImage = (ImageView) view.findViewById(R.id.itemImage); view.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(v.getContext(), tvTitle.getText(), Toast.LENGTH_SHORT).show(); } }); } } } 

RecyclerViewDataAdapter.java

 import android.content.Context; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; import com.pratap.gplaystore.R; import com.pratap.gplaystore.models.SectionDataModel; import java.util.ArrayList; public class RecyclerViewDataAdapter extends RecyclerView.Adapter { private ArrayList dataList; private Context mContext; public RecyclerViewDataAdapter(Context context, ArrayList dataList) { this.dataList = dataList; this.mContext = context; } @Override public ItemRowHolder onCreateViewHolder(ViewGroup viewGroup, int i) { View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.list_item, null); ItemRowHolder mh = new ItemRowHolder(v); return mh; } @Override public void onBindViewHolder(ItemRowHolder itemRowHolder, int i) { final String sectionName = dataList.get(i).getHeaderTitle(); ArrayList singleSectionItems = dataList.get(i).getAllItemsInSection(); itemRowHolder.itemTitle.setText(sectionName); SectionListDataAdapter itemListDataAdapter = new SectionListDataAdapter(mContext, singleSectionItems); itemRowHolder.recycler_view_list.setHasFixedSize(true); itemRowHolder.recycler_view_list.setLayoutManager(new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false)); itemRowHolder.recycler_view_list.setAdapter(itemListDataAdapter); itemRowHolder.btnMore.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Toast.makeText(v.getContext(), "click event on more, "+sectionName , Toast.LENGTH_SHORT).show(); } }); /* Glide.with(mContext) .load(feedItem.getImageURL()) .diskCacheStrategy(DiskCacheStrategy.ALL) .centerCrop() .error(R.drawable.bg) .into(feedListRowHolder.thumbView);*/ } @Override public int getItemCount() { return (null != dataList ? dataList.size() : 0); } public class ItemRowHolder extends RecyclerView.ViewHolder { protected TextView itemTitle; protected RecyclerView recycler_view_list; protected Button btnMore; public ItemRowHolder(View view) { super(view); this.itemTitle = (TextView) view.findViewById(R.id.itemTitle); this.recycler_view_list = (RecyclerView) view.findViewById(R.id.recycler_view_list); this.btnMore= (Button) view.findViewById(R.id.btnMore); } } } 

SingleItemModel.java

 public class SingleItemModel { private String name; private String url; private String description; public SingleItemModel() { } public SingleItemModel(String name, String url) { this.name = name; this.url = url; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } } 

MainActivity.java

 import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.LinearLayoutManager; import android.support.v7.widget.RecyclerView; import android.support.v7.widget.Toolbar; import com.pratap.gplaystore.adapters.RecyclerViewDataAdapter; import com.pratap.gplaystore.models.SectionDataModel; import com.pratap.gplaystore.models.SingleItemModel; import java.util.ArrayList; public class MainActivity extends AppCompatActivity { private Toolbar toolbar; ArrayList allSampleData; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); toolbar = (Toolbar) findViewById(R.id.toolbar); allSampleData = new ArrayList(); if (toolbar != null) { setSupportActionBar(toolbar); toolbar.setTitle("G PlayStore"); } createDummyData(); RecyclerView my_recycler_view = (RecyclerView) findViewById(R.id.my_recycler_view); my_recycler_view.setHasFixedSize(true); RecyclerViewDataAdapter adapter = new RecyclerViewDataAdapter(this, allSampleData); my_recycler_view.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)); my_recycler_view.setAdapter(adapter); } public void createDummyData() { for (int i = 1; i <= 5; i++) { SectionDataModel dm = new SectionDataModel(); dm.setHeaderTitle("Section " + i); ArrayList singleItem = new ArrayList(); for (int j = 0; j <= 5; j++) { singleItem.add(new SingleItemModel("Item " + j, "URL " + j)); } dm.setAllItemsInSection(singleItem); allSampleData.add(dm); } } } 

activity_main.xml中

list_item.xml

list_single_card.xml

在AndroidManifest.xml中，您需要添加以下权限：

请帮忙。