仿京東的首頁+mvp+輪播圖
阿新 • • 發佈：2018-12-17
————首先寫一下Bean類
public class MessageBean<T> { private String msg; private String code; private T data; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } public T getData() { return data; } public void setData(T data) { this.data = data; } }
public class Shopper { private String sellerid; private String sellerName; private List<Product> list; public String getSellerid() { return sellerid; } public void setSellerid(String sellerid) { this.sellerid = sellerid; } public String getSellerName() { return sellerName; } public void setSellerName(String sellerName) { this.sellerName = sellerName; } public List<Product> getList() { return list; } public void setList(List<Product> list) { this.list = list; } }
————View層
public interface IView {
void failed(Exception e);
void getBanner(MessageBean<List<Banner>> banners);
void getProduct(MessageBean<List<Shopper>> products);
}————INetCallBack類
public interface INetCallBack { void success(Object obj); void failed(Exception e); }
————Model層
public class HomeModel {
public void getData(String url, ICallBack callBack, Type type) {
HttpUtils.getInstance().get(url, callBack, type);
}
}————Presenter層
public class HomePresenter {
private IView iv;
private HomeModel model;
public void attach(IView iv){
this.iv = iv;
model = new HomeModel();
}
public void getBanner(){
String url = "http://www.zhaoapi.cn/ad/getAd";
Type type = new TypeToken<MessageBean<List<Banner>>>() {
}.getType();
model.getData(url, new ICallBack() {
@Override
public void onSuccess(Object obj) {
MessageBean<List<Banner>> data = (MessageBean<List<Banner>>) obj;
iv.getBanner(data);
}
@Override
public void onFailed(Exception e) {
iv.failed(e);
}
},type);
}
public void getProduct(){
String url = "http://www.zhaoapi.cn/product/getCarts?uid=71";
Type type = new TypeToken<MessageBean<List<Shopper>>>() {
}.getType();
model.getData(url, new ICallBack() {
@Override
public void onSuccess(Object obj) {
MessageBean<List<Shopper>> data = (MessageBean<List<Shopper>>) obj;
iv.getProduct(data);
}
@Override
public void onFailed(Exception e) {
iv.failed(e);
}
},type);
}
public void detach(){
if (iv!= null){
iv = null;
}
}
}
————輪播圖的介面卡
public class BannerAdapter extends PagerAdapter {
private Context context;
private List<Banner> list;
public BannerAdapter(Context context, List<Banner> list) {
this.context = context;
this.list = list;
}
@Override
public int getCount() {
return list.size();
}
@Override
public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
return view == object;
}
@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
ImageView img = new ImageView(context);
Glide.with(context).load(StringUtils.https2Http(list.get(position).getIcon())).into(img);
container.addView(img);
return img;
}
@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
container.removeView((View) object);
}
}—————下面列表的介面卡
public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ViewHolder>{
private Context context;
private List<Product> list;
public ProductAdapter(Context context, List<Product> list) {
this.context = context;
this.list = list;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View inflate = View.inflate(context, R.layout.item_product, null);
ViewHolder holder = new ViewHolder(inflate);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
Product product = list.get(position);
String[] strings = product.getImages().split("\\|");
Glide.with(context)
.load(StringUtils.https2Http(strings[0]))
.into(holder.imgProduct);
holder.txtTitle.setText(product.getTitle());
}
@Override
public int getItemCount() {
return list.size();
}
class ViewHolder extends RecyclerView.ViewHolder {
private ImageView imgProduct;
private TextView txtTitle;
public ViewHolder(@NonNull View itemView) {
super(itemView);
imgProduct = itemView.findViewById(R.id.img_product);
txtTitle = itemView.findViewById(R.id.txt_title);
}
}
}
—————實現方法
public class ShouFragment extends Fragment implements IView {
private ViewPager vp;
private RecyclerView rec_view;
private List<Banner> bannerList;
private BannerAdapter bannerAdapter;
private List<Product> productList;
private ProductAdapter productAdapter;
private HomePresenter presenter;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.item_shou,container,false);
vp = view.findViewById(R.id.vp);
rec_view = view.findViewById(R.id.rec_view);
return view;
}
@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
bannerList = new ArrayList<>();
bannerAdapter = new BannerAdapter(getActivity(), bannerList);
vp.setAdapter(bannerAdapter);
productList = new ArrayList<>();
RecyclerView.LayoutManager layoutManager = new StaggeredGridLayoutManager(2,StaggeredGridLayoutManager.VERTICAL);
rec_view.setLayoutManager(layoutManager);
productAdapter = new ProductAdapter(getActivity(), productList);
rec_view.setAdapter(productAdapter);
presenter = new HomePresenter();
presenter.attach(this);
presenter.getBanner();
presenter.getProduct();
}
@Override
public void failed(Exception e) {
Toast.makeText(getContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
}
@Override
public void getBanner(MessageBean<List<Banner>> banners) {
if (banners != null){
List<Banner> data = banners.getData();
if (data != null){
bannerList.clear();
bannerList.addAll(data);
bannerAdapter.notifyDataSetChanged();
}
}
}
@Override
public void getProduct(MessageBean<List<Shopper>> products) {
List<Shopper> shoppers = products.getData();
if (shoppers != null){
productList.clear();
for (Shopper shopper : shoppers){
List<Product> list = shopper.getList();
if (list != null){
productList.addAll(list);
}
}
productAdapter.notifyDataSetChanged();
}
}
@Override
public void onDestroy() {
super.onDestroy();
if (presenter != null){
presenter.detach();
}
}
}—————不好意思，忘了，最後是佈局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
>
<android.support.v4.view.ViewPager
android:id="@+id/vp"
android:layout_width="match_parent"
android:layout_height="150dp">
</android.support.v4.view.ViewPager>
<android.support.v7.widget.RecyclerView
android:id="@+id/rec_view"
android:layout_width="match_parent"
android:layout_height="match_parent">
</android.support.v7.widget.RecyclerView>
</LinearLayout><?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="@+id/img_product"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/txt_title"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>