RecyclerView

package com.ali.recyclerviewdemo;


public class MainActivity extends AppCompatActivity {


    private RecyclerView recyClerView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        recyClerView = findViewById(R.id.main_recycler);
        Observable<Bean> login=RetrofitManager.getDefault().create(MainApi.class).login();
        //被观察者在子线程处理数据
        login.subscribeOn(Schedulers.io())
               // 子线程
                .observeOn(AndroidSchedulers.mainThread())
                //
                .subscribe(new Consumer<Bean>() {

                    private List<Bean.DataBean> data;

                    @Override
                    public void accept(Bean bean) throws Exception {
                        data = bean.getData();
                        //
                        final MyAdapter myAdapter = new MyAdapter(data,MainActivity.this);
                        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(MainActivity.this);
                        recyClerView.setLayoutManager(linearLayoutManager);
                        recyClerView.setAdapter(myAdapter);
                    }
                });
    }
}

 

 

 

 

package com.ali.recyclerviewdemo;


public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {

   private List<Bean.DataBean> data;
   private Context  context;

   //public Context context;
    //public MyAdapter(List<Bean.DataBean> data,Context context){
    // this.data = data;
    // this.data = data;
    //
    //
    // }


    public MyAdapter(List<Bean.DataBean> data, Context context) {
        this.data = data;
        this.context = context;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recycler, parent, false);
        final MyViewHolder myViewHolder = new MyViewHolder(itemView);
        return myViewHolder;

    }

    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {
        holder.itemContentTv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (onItemClickListener != null) {
                    onItemClickListener.onItemClick(v, position);
                }
            }
        });

        holder.itemContentTv.setText(data.get(position).getName());
        String[] split = data.get(position).getIcon().split("\\|");
        Uri parse = Uri.parse(split[0]);
        holder.simpleDraweeView.setImageURI(parse);
    }

    @Override
    public int getItemCount() {

        return data.size();

    }

    public class MyViewHolder extends RecyclerView.ViewHolder {

        //viewHolder内部有一个itemView成员变量代表的就是整个item布局

        private final TextView itemContentTv;
        private SimpleDraweeView simpleDraweeView;
        public MyViewHolder(final View itemView) {
            super(itemView);
            itemContentTv = itemView.findViewById(R.id.tv_item_content);
         simpleDraweeView=itemView.findViewById(R.id.main_image);
        }
    }


    //给RecyclerView设置条目点击监听
    private OnItemClickListener onItemClickListener;



    public interface OnItemClickListener {

        void onItemClick(View view, int position);

    }
}

public class app extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        Fresco.initialize(this);
    }
}

Bean

 

public interface MainApi {
    @GET("product/getCatagory")
    Observable<Bean>login();
}

 

package com.ali.recyclerviewdemo;


public class RetrofitManager {
    private static String BASE_URL ="https://www.zhaoapi.cn/";
    private Retrofit mRetrofit;
    private static class SingleHolder {
        private static final RetrofitManager _INSTANT = new RetrofitManager(BASE_URL);
    }
    public static RetrofitManager getDefault() {
        return SingleHolder._INSTANT;
    }
    private RetrofitManager(String baseUrl) {
        mRetrofit = new Retrofit.Builder()
                .baseUrl(baseUrl)
                .addConverterFactory(GsonConverterFactory.create())
                .client(buildOkhttpClinet())
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .build();
    }
    private OkHttpClient buildOkhttpClinet() {
        return new OkHttpClient.Builder()
                .readTimeout(5, TimeUnit.SECONDS)
                .build();
    }

    public <T> T create(Class<T> Clazz) {
        return mRetrofit.create(Clazz);
    }
}