分组(recyclerview嵌套)

效果

分包方式

重要代码
recyclerview嵌套recyclerview
适配器(大的适配器嵌套子适配器)
package com.jia.dividegroups.adapt;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;import com.jia.dividegroups.R;
import com.jia.dividegroups.bean.RightBean;import java.util.List;public class RightAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {private Context context;List<RightBean.DataBean> list;public RightAdapter(Context context, List<RightBean.DataBean> list) {this.context = context;this.list = list;
}@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {View view = LayoutInflater.from(context).inflate(R.layout.right_item, viewGroup, false);RightViewHolder rightViewHolder = new RightViewHolder(view);return rightViewHolder;
}@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {RightViewHolder rightViewHolder = (RightViewHolder) viewHolder;rightViewHolder.right_name.setText(list.get(i).getName());List<RightBean.DataBean.ListBean> listBeans = this.list.get(i).getList();RightChildAdapter rightChildAdapter = new RightChildAdapter(context, listBeans);rightViewHolder.child_recycler.setAdapter(rightChildAdapter);rightViewHolder.child_recycler.setLayoutManager(new GridLayoutManager(context,3));
}@Override
public int getItemCount() {return list.size();
}
class RightViewHolder extends RecyclerView.ViewHolder {private final TextView right_name;private final RecyclerView child_recycler;public RightViewHolder(@NonNull View itemView) {super(itemView);right_name = itemView.findViewById(R.id.right_name);child_recycler = itemView.findViewById(R.id.child_recycler);}
}

}
小适配器
package com.jia.dividegroups.adapt;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;import com.jia.dividegroups.R;
import com.jia.dividegroups.bean.RightBean;
import com.squareup.picasso.Picasso;import java.util.List;public class RightChildAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {private Context context;List<RightBean.DataBean.ListBean> list;public RightChildAdapter(Context context, List<RightBean.DataBean.ListBean> list) {this.context = context;this.list = list;
}@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {View view = LayoutInflater.from(context).inflate(R.layout.rightinchild_item, viewGroup, false);ChildViewHolder childViewHolder = new ChildViewHolder(view);return childViewHolder;
}@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {ChildViewHolder childViewHolder = (ChildViewHolder) viewHolder;childViewHolder.child_name.setText(list.get(i).getName());Picasso.with(context).load(list.get(i).getIcon()).into(childViewHolder.image_icon);
}@Override
public int getItemCount() {return list.size();
}
class ChildViewHolder extends RecyclerView.ViewHolder {private final ImageView image_icon;private final TextView child_name;public ChildViewHolder(@NonNull View itemView) {super(itemView);image_icon = itemView.findViewById(R.id.image_icon);child_name = itemView.findViewById(R.id.child_name);}
}

}
其他还和以前一样(M层获取数据)
package com.jia.dividegroups.model;

import com.google.gson.Gson;
import com.jia.dividegroups.bean.RightBean;
import com.jia.dividegroups.callback.RightCallBack;
import com.jia.dividegroups.utils.OkHttpUtils;import java.io.IOException;
import java.util.List;import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.Response;public class RightModel {public void right(int cid, final RightCallBack rightCallBack){String url = "http://www.zhaoapi.cn/product/getProductCatagory?cid="+cid;OkHttpUtils.enqueueGet(url, new Callback() {@Overridepublic void onFailure(Call call, IOException e) {}@Overridepublic void onResponse(Call call, Response response) throws IOException {String s = response.body().string();Gson gson = new Gson();RightBean rightBean = gson.fromJson(s, RightBean.class);List<RightBean.DataBean> data = rightBean.getData();if(rightBean.getCode().equals("0")){rightCallBack.onRightCallBackSuccess(data);}else{rightCallBack.onRightCallBackFailure("展示失败");}}});
}

}

OkHttp请求网络
package com.jia.dividegroups.utils;

import java.util.concurrent.TimeUnit;import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;public class OkHttpUtils {private static OkHttpUtils okHttpUtils = new OkHttpUtils();private static OkHttpClient okHttpClient;private OkHttpUtils(){}
public static OkHttpUtils init(){OkHttpClient.Builder builder = new OkHttpClient.Builder();builder.connectTimeout(3000,TimeUnit.MILLISECONDS);builder.writeTimeout(3000,TimeUnit.MILLISECONDS);builder.readTimeout(3000,TimeUnit.MILLISECONDS);okHttpClient = builder.build();return okHttpUtils;
}
private static Request createRequest(String url,String method){Request.Builder builder = new Request.Builder().url(url);Request request = builder.build();return request;
}
public static void enqueueGet(String url, Callback callback){Request request = createRequest(url,"GET");Call call = okHttpClient.newCall(request);call.enqueue(callback);
}

}

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