Android(安卓)仿京东分类页面

activity_main

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MianActivity

public class MainActivity extends AppCompatActivity implements GroupPresenter.GroupListener, RightPresenter.RightListener {    RecyclerView mRecyclerView,recycle_right;    Madapter madapter;    RightAdapter rightAdapter;    RightPresenter rightPresenter;    GroupPresenter groupPresenter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        mRecyclerView  =findViewById(R.id.recycle);        recycle_right = findViewById(R.id.recycle_right);        //设置左边布局        initLeft();        //设置右边布局   默认加载第一页        initRight("http://www.zhaoapi.cn/product/getProductCatagory?cid=1");    }    private void initRight(String urls) {        //p层        rightPresenter = new RightPresenter(this);        rightPresenter.loadData(urls);        //适配器        rightAdapter = new RightAdapter(MainActivity.this);        recycle_right.setAdapter(rightAdapter);        recycle_right.setLayoutManager(new LinearLayoutManager(MainActivity.this,LinearLayoutManager.VERTICAL,false));    }    private void initLeft() {        //左边布局  适配器        madapter = new Madapter(this);        mRecyclerView.setAdapter(madapter);        //p层  请求数据        groupPresenter = new GroupPresenter(this);        groupPresenter.requestData();        //布局管理器        mRecyclerView.setLayoutManager(new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false));        //条目点击        madapter.setMadapterListener(new Madapter.MadapterListener() {            @Override            public void setonitemclick(int cid) {              Log.e("哈哈哈哈哈哈哈哈哈哈",cid+"");                String path =  "http://www.zhaoapi.cn/product/getProductCatagory?cid="+cid;                 initRight(path);            }        });    }    @Override    public void datasuccess(List dataBeans) {        madapter.setData(dataBeans);    }    @Override    public void rightsuccess(List dataBeans) {       rightAdapter.setData(dataBeans);    }    @Override    protected void onDestroy() {        super.onDestroy();         rightPresenter = null;         groupPresenter=null;    }}

左边条目的适配器 Madapter

** * date:2018/11/21 * author:QMY(QMY) * function: */public class Madapter extends RecyclerView.Adapter {    private final MainActivity mainActivity;    private final List grouplist;    public Madapter(MainActivity mainActivity) {        this.mainActivity=mainActivity;        grouplist = new ArrayList<>();    }    @NonNull    @Override    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {        View view = View.inflate(mainActivity, R.layout.group, null);        ViewHolder viewHolder = new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {        viewHolder.tv.setText(grouplist.get(i).getName());        final GroupBean.DataBean bean = grouplist.get(i);        //条目点击事件        viewHolder.itemView.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                mMadapterListener.setonitemclick(bean.getCid());            }        });    }    @Override    public int getItemCount() {        return grouplist.size();    }    public void setData(List dataBeans) {        grouplist.clear();        grouplist.addAll(dataBeans);        notifyDataSetChanged();    }    public class ViewHolder extends RecyclerView.ViewHolder {        TextView tv;        public ViewHolder(@NonNull View itemView) {            super(itemView);            tv = itemView.findViewById(R.id.tv);        }    }    public interface  MadapterListener{        void setonitemclick(int cid);    }    public MadapterListener mMadapterListener;    public void setMadapterListener(MadapterListener madapterListener){        mMadapterListener=madapterListener;    }}

//右边第一个适配器

public class RightAdapter extends RecyclerView.Adapter {    private final List rightlist;    private final MainActivity mainActivity;    public RightAdapter(MainActivity mainActivity) {        this.mainActivity =mainActivity;        rightlist=new ArrayList<>();    }    @NonNull    @Override    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {        View view = View.inflate(mainActivity, R.layout.right, null);        ViewHolder viewHolder = new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int i) {        viewHolder.name.setText(rightlist.get(i).getName());        List list = rightlist.get(i).getList();       RightAdapter1 rightAdapter1 = new RightAdapter1(list,mainActivity);       viewHolder.recycle_right1.setAdapter(rightAdapter1);       viewHolder.recycle_right1.setLayoutManager(new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL));       rightAdapter1.setOnItemClickListener(new RightAdapter1.OnItemClickListener() {           @Override           public void onItemClickListener(int layoutPosition) {               //点击条目的时候要根据点击的下标跳转到相应的页面，               // 所以需要拿到解析完的集合list.get(传过来的下标).地址                Intent intent = new Intent(mainactivity, Goods.class);                intent.putExtra("pscid",pscid);                activity.startActivity(intent);           }       });    }    @Override    public int getItemCount() {        return rightlist.size();    }    public void setData(List dataBeans) {        this.rightlist.clear();        rightlist.addAll(dataBeans);        notifyDataSetChanged();    }    public class ViewHolder extends RecyclerView.ViewHolder {        RecyclerView recycle_right1;        TextView name;        public ViewHolder(@NonNull View itemView) {            super(itemView);            recycle_right1 = itemView.findViewById(R.id.recycle_right1);            name = itemView.findViewById(R.id.name);        }    }

//右边下边适配

/** * date:2018/11/22 * author:QMY(QMY) * function: */class RightAdapter1 extends RecyclerView.Adapter {    private final List list;    private final MainActivity mainactivity;    public RightAdapter1(List list, MainActivity mainActivity) {        this.list=list;        this.mainactivity = mainActivity;    }    @NonNull    @Override    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {        View view = View.inflate(mainactivity, R.layout.right1, null);        ViewHolder viewHolder = new ViewHolder(view);        return viewHolder;    }    @Override    public void onBindViewHolder(@NonNull ViewHolder viewHolder, final int i) {        viewHolder.name.setText(list.get(i).getName());        ImageLoader.getInstance().displayImage(list.get(i).getIcon(),                viewHolder.image,ImageLoderConfigs.getimageoption(mainactivity));        viewHolder.name.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                mOnItemClickListener.onItemClickListener(list.get(i).getPscid());            }        });    }    @Override    public int getItemCount() {        return list.size();    }    public class ViewHolder extends RecyclerView.ViewHolder {        ImageView image;        TextView name;        public ViewHolder(@NonNull View itemView) {            super(itemView);            image = itemView.findViewById(R.id.image);            name = itemView.findViewById(R.id.name);        }    }    //实现接口    private OnItemClickListener mOnItemClickListener;    //创建接口    public interface OnItemClickListener{        void onItemClickListener(int layoutPosition);    }    //外界调用的方法    public void setOnItemClickListener(OnItemClickListener onItemClickListener) {        mOnItemClickListener= onItemClickListener;    }}

//左边条目p层

public class GroupPresenter {    public  void requestData(){       String path =  "http://www.zhaoapi.cn/product/getCatagory";        OkHttpUtils.getInstance().doGet(path, new OkHttpUtils.Utils() {            @Override            public void failed() {            }            @Override            public void success(String string) {                GroupBean groupBean = new Gson().fromJson(string, GroupBean.class);                mGroupListener.datasuccess(groupBean.getData());            }        });    }    public interface GroupListener{        void datasuccess(List dataBeans);    }    public GroupListener mGroupListener;    public GroupPresenter(GroupListener groupListener) {        mGroupListener = groupListener;    }}

右边p层

public class RightPresenter {     public void loadData(String urls){         OkHttpUtils.getInstance().doGet(urls, new OkHttpUtils.Utils() {             @Override             public void failed() {             }             @Override             public void success(String string) {                 //解析                 RightBean rightBean = new Gson().fromJson(string, RightBean.class);                 List data = rightBean.getData();                 Log.e("gsaga",rightBean+"");                 mRightListener.rightsuccess(data);             }         });     }     public interface  RightListener{         void rightsuccess(List dataBeans);     }     public RightListener mRightListener;    public RightPresenter(RightListener rightListener) {        mRightListener = rightListener;    }}

左边布局

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右上

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右下

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