bao

登录 注册展示逻辑判断

    private Handler handler= new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            int arg1 = msg.arg1;
            if(arg1  == 1){
                //post 接口的逻辑
                s=(String)msg.obj;
                if (s.contains("成功")){
                    callBack.onSuccess(s);
                }
            }else {
                // get 接口逻辑
                bean=(Bean)msg.obj;
                if (bean==null) {
                    backCall.onShowError("bean类为空");
                }else if (bean!=null){
                    backCall.onShowSuccess(bean);
                }
            }
        }
    };
        this.cakkbackInterface=cakkbackInterface;
    OkHttpUtil.getInstance().doGet(handler,1);
    OkHttpUtil.getInstance().doGet2(handler,2);

点击分类

public void setOnclickListenr(onclickListenr onclickListenr) {
    this.onclickListenr = onclickListenr;
}

public interface onclickListenr{
    void click(String sd);
}
继承适配器

yejm

Handler handler =new Handler() {
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        if (msg.what==3){
            String o =(String) msg.obj;
            Log.e("Tag",o+"");
            Gson gson = new Gson();
            RightBean rightBean = gson.fromJson(o, RightBean.class);
            rightAdapter = new RightAdapter(rightBean.getResult(), MainActivity.this);
            rightrecyclerView.setAdapter(rightAdapter);
        }


    }
};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    iPresenterInterface=new PresenterClass(this);
    iPresenterInterface.onPresenterInterface();
    initView();
}

private void initView() {
    rightrecyclerView = findViewById(R.id.right_recycleview);
    leftrecyclerView = findViewById(R.id.left_recycleview);
    LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
    linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
    leftrecyclerView.setLayoutManager(linearLayoutManager);
    GridLayoutManager gridLayoutManager = new GridLayoutManager(this, 3);
    gridLayoutManager.setOrientation(GridLayoutManager.VERTICAL);
    rightrecyclerView.setLayoutManager(gridLayoutManager);
    rightrecyclerView.addItemDecoration(new DividerItemDecoration(this,LinearLayout.VERTICAL));
    iPresenterInterface =new PresenterClass(this);
    iPresenterInterface.onPresenterInterface();
}

@Override
public void onshow(Object object) {
    LeftBean leftBeanbean =(LeftBean) object;
    leftAdapter = new LeftAdapter(leftBeanbean.getResult(), this);
   leftAdapter.setOnclickListenr(this);
   leftrecyclerView.setAdapter(leftAdapter);

}


@Override
public void onRight(Object object) {
    RightBean rightBean=(RightBean) object;
    rightAdapter = new RightAdapter(rightBean.getResult(), this);
    rightrecyclerView.setAdapter(rightAdapter);
}

@Override
public void click(String sd) {
    getLeft(sd);
    OkHttpUtil.do2Get3(handler,2,sd);
    Log.e("SD",sd+"");
}


private void getLeft(String sd) {

    iPresenterInterface.onPresenterInterface();

}

}
// adapter
public class LeftAdapter extends RecyclerView.Adapter<LeftAdapter.ViewHolder>{
private List<LeftBean.ResultBean> list;
private Context context;
private ceshi ceshi=null;

public void setCeShi(ceshi ceshi) {
    this.ceshi = ceshi;
}

public LeftAdapter(List<LeftBean.ResultBean> list, Context context) {
    this.list = list;
    this.context = context;
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
    View view=LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.left_item,null);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, final int i) {

    viewHolder.textView.setText(list.get(i).name);
     final String id = list.get(i).getName();
     viewHolder.textView.setOnClickListener(new View.OnClickListener() {
         @Override
         public void onClick(View v) {
            if(onclickListenr!=null){
                onclickListenr.click(list.get(i).name.substring(0,2));
            }
         }
     });
}
@Override
public int getItemCount() {
    if (list!=null){
        return list.size();
    }else{
        return 0;
    }
}

public class ViewHolder extends RecyclerView.ViewHolder{

    private final  TextView textView;

    public ViewHolder(@NonNull View itemView) {
        super(itemView);
        textView = itemView.findViewById(R.id.left_titlea);
    }

}

public onclickListenr onclickListenr;

public void setOnclickListenr(onclickListenr onclickListenr) {
    this.onclickListenr = onclickListenr;
}

public interface onclickListenr{
    void click(String sd);
}

}