java – 使用android中的Recycler视图同时使用两组多个图像进行

我们的问题是通过使用数据绑定单击[回收者视图]的任何单个项目来更新回收器视图中的多个图像但最初我们能够使用 ImageAdapter的xml.But中的数据绑定仅在某些位置更新图像根据我们在android开发人员站点中的搜索,我们被建议使用Recycler视图而不是我们的初始方法 before clicking any image

after clicking any image

上述方法是使用图像适配器中的数据绑定,如下所示.

图像适配器

package tene.com.darxstudios;

import android.content.Context;
import android.databinding.DataBindingUtil;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;

import java.util.ArrayList;
import java.util.List;


public class ImageAdapter extends BaseAdapter {
    private static final String TAG = ImageAdapter.class.getName() ;
    Context mContext;
    List<Integer> cropsList1 = new ArrayList<Integer>();
    List<Integer> cropsList2 = new ArrayList<Integer>();
    User user0 = new User(),user1 = new User(),user2 = new     User(),user3 = new User(),user4 = new User();
    public ImageAdapter(Context mContext,List<Integer>     cropsList1,List<Integer> cropsList2){
        this.mContext = mContext;
        this.cropsList1 = cropsList1;
        this.cropsList2 = cropsList2;

    }
    @Override
    public int getCount() {
        return cropsList1.size();
    }

    @Override
    public Object getItem(int position) {
        return cropsList1.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(final int position,View convertView,ViewGroup parent) {

        LayoutInflater inflater = (LayoutInflater) mContext
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

//        View view = inflater.inflate(R.layout.item_view,null);

        final User user = new User();
        user.setFirstName(cropsList1.get(position));

        tene.com.darxstudios.ItemViewBinding binding =      DataBindingUtil.inflate(inflater,R.layout.item_view,parent,false);
        binding.setUser(user);

        View view = binding.getRoot();

        ImageView imageView = (ImageView)     view.findViewById(R.id.image);


//        if(position == 0){
//            user0 = user;
//        }else if(position == 1){
//            user1 = user;
//        }else if(position == 2){
//            user2 = user;
//        }else if(position == 3){
//            user3 = user;
//        }else if(position == 4){
//            user4 = user;
//        }

         imageView.setOnClickListener(new View.OnClickListener() {
             public void onClick(View v) {
              user.setFirstName(cropsList2.get(position));
//                user0.setFirstName(cropsList2.get(0));
//                user1.setFirstName(cropsList2.get(1));
//                user2.setFirstName(cropsList2.get(2));
//                user3.setFirstName(cropsList2.get(3));
//                user4.setFirstName(cropsList2.get(4));
            }
        });
        return view;
    }
}

item_view.xml

<?xml version="1.0" encoding="utf-8"?>
<layout xmlns:bind="http://schemas.android.com/apk/res-auto"
     xmlns:android="http://schemas.android.com/apk/res/android">
    <data class=".ItemViewBinding">
        <variable  name="user" type="tene.com.darxstudios.User"/>
    </data>
<LinearLayout
    android:orientation="horizontal"     android:layout_width="wrap_content"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:id="@+id/image"
        firstName='@{user.firstName}'/>

</LinearLayout>
</layout>

我们需要使用带有数据绑定的循环器视图,在一次单击任何图像时更新所有图像.

public class NumReelAdapter extends RecyclerView.Adapter<NumReelAdapter.recyclerViewHolder> {

List<NumReel> data = Collections.emptyList();
Context ctx;
int selectedPosition = 0;

public void onBindViewHolder(final recyclerViewHolder holder,final int position) {
    final NumReel current = data.get(position);
    if(selectedPosition == position){
        // here highlighting the background. And set the inside color to green
        holder.itemView.setBackground(whatever_image_id);
    } else {
        //reset the color to white
        holder.itemView.setBackground(whatever_it_had_before);
    }
    holder.vItemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //refresh the adapter
            notifyItemChanged(selectedPosition);
            //change clicked position
            selectedPosition = position;
            //reset the adapter with new position highlighted
            notifyItemChanged(selectedPosition);
            if (numClickListener != null) {
                String vTag = v.getTag().toString();
                //numClickListener.repsClick(v,position); alternate method where data can't be sent
                numClickListener.numClick(vTag,current.num);
            }
        }
    });