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Android使用分类型RecyclerView仿各大商城首页

2022-06-06 04:26

短信预约 -IT技能 免费直播动态提醒

**正所谓，一入商城深似海~
商城类的App，确实是有许多东西值得学习，但是只要略微斟酌一下，你又会发现，它们之间存在着许多不谋而合的相似，也就是所谓的雷同~既然如此，让我们也来接下地气，先从一个简单的首页做起吧~**

实现的效果如下图：

1.大布局就是一个简单的RecyclerView：

也可以通过添加多个header实现

4.这里我仅以四种类型为例


 
  
 public static final int BLACK_5_BANNER0 = 0; 
  
 public static final int TODAY_NEW_GV1 = 1; 
  
 public static final int PIN_PAI_IV2=2; 
  
 public static final int DAPEIQS_GV3 =3; 
  
 public int currentType = BLACK_5_BANNER0;

写构造器并传入参数，完善getItemCount() 和 getItemType()方法


 
 private final Context mContext; 
 private final List<WomenBean.WomenData.ModuleBean> moduleBeanList; 
 //以后用它来初始化布局 
 private final LayoutInflater mLayoutInflater; 
 //构造器 
 public HomeRecycleViewAdapter3(Context mContext, List<WomenBean.WomenData.ModuleBean> moduleBeanList) { 
  this.mContext = mContext; 
  this.moduleBeanList = moduleBeanList; 
  //以后用它来初始化布局 
  mLayoutInflater = LayoutInflater.from(mContext); 
 } 
 @Override 
 public int getItemCount() { 
  //以后完成后改为4，现在只完成第一种类型暂时写1 
  return 1; 
 } 
 @Override 
 public int getItemViewType(int position) { 
  switch (position) { 
   case BLACK_5_BANNER0: 
    currentType = BLACK_5_BANNER0; 
    break; 
   case TODAY_NEW_GV1: 
    currentType = TODAY_NEW_GV1; 
    break; 
   case PIN_PAI_IV2: 
    currentType = PIN_PAI_IV2; 
    break; 
   case DAPEIQS_GV3: 
    currentType = DAPEIQS_GV3; 
    break; 
  } 
  return currentType; 
 }

5.下面就来一一实现这四种类型

5.1设置第1种类型–黑色星期五（使用的是banner）的适配器


@Override 
 public int getItemCount() { 
  //以后完成后改为4，现在只完成第一种类型暂时写1 
  return 1; 
 } 
 @Override 
 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
  if (viewType == BLACK_5_BANNER0) { 
   return new BBNViewHolder(mContext, mLayoutInflater.inflate(R.layout.banner_viewpager, null)); 
  } 
  return null; 
 } 
 @Override 
 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
  if (getItemViewType(position) == BLACK_5_BANNER0) { 
   BBNViewHolder bbnViewHolder = (BBNViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> module0data = moduleBeanList.get(0).getData(); 
   bbnViewHolder.setData(module0data); 
  } 
 } 
 public class BBNViewHolder extends RecyclerView.ViewHolder { 
  private final Context mContext; 
  private Banner banner; 
  public BBNViewHolder(Context mContext, View itemView) { 
   super(itemView); 
   this.mContext = mContext; 
   banner = (Banner) itemView.findViewById(R.id.banner); 
  } 
  public void setData(List<WomenBean.WomenData.ModuleBean.DataBean> module0data) { 
   //得到图片地址的集合 
   List<String> imageUrls = new ArrayList<>(); 
   for (int i = 0; i < module0data.size(); i++) { 
    String image = module0data.get(i).getImg(); 
    imageUrls.add(image); 
   } 
   //新版的banner的使用----偷下懒的使用方法 
   banner.setImages(imageUrls).setImageLoader(new GlideImageLoader()).start(); 
  } 
 } 
 public class GlideImageLoader extends ImageLoader { 
  @Override 
  public void displayImage(Context context, Object path, ImageView imageView) { 
   imageView.setScaleType(ImageView.ScaleType.FIT_XY); 
   //Glide 加载图片简单用法 
   Glide.with(context).load(path).into(imageView); 
  } 
 }

5.2设置第2种类型–今日新品–（使用GridView实现）的适配器


public class TodayGVAdapter extends BaseAdapter { 
 private final Context mContext; 
 private final List<WomenBean.WomenData.ModuleBean.DataBean> module1data; 
 public TodayGVAdapter(Context mContext, List<WomenBean.WomenData.ModuleBean.DataBean> module1data) { 
  this.mContext = mContext; 
  this.module1data = module1data; 
 } 
 @Override 
 public int getCount() { 
  return module1data == null ? 0 : module1data.size(); 
 } 
 @Override 
 public Object getItem(int i) { 
  return null; 
 } 
 @Override 
 public long getItemId(int i) { 
  return 0; 
 } 
 @Override 
 public View getView(int position, View convertView, ViewGroup viewGroup) { 
  ViewHolder holder; 
  if (convertView == null) { 
   //item的布局：垂直线性，ImagView+TextView 
   convertView = View.inflate(mContext, R.layout.item_channel, null); 
   holder = new ViewHolder(); 
   holder.iv_channel = (ImageView) convertView.findViewById(R.id.iv_channel); 
   holder.tv_channel = (TextView) convertView.findViewById(R.id.tv_channel); 
   convertView.setTag(holder); 
  } else { 
   holder = (ViewHolder) convertView.getTag(); 
  } 
  //装配数据 
  WomenBean.WomenData.ModuleBean.DataBean datasig = module1data.get(position); 
  //使用Glide加载图片 
  Glide.with(mContext).load(datasig.getImg()).into(holder.iv_channel); 
  //设置文本 
  holder.tv_channel.setText(datasig.getTitle()); 
  return convertView; 
 } 
 public static class ViewHolder { 
  public ImageView iv_channel; 
  public TextView tv_channel; 
 } 
}

5.3 第3种类型–品牌福利–（直接使用ImagView）


@Override 
 public int getItemCount() { 
  //以后完成后改为4，现在只完成第3种类型暂时写3 
  return 3; 
 } 
 @Override 
 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
  if (viewType == BLACK_5_BANNER0) { 
   return new BBNViewHolder(mContext, mLayoutInflater.inflate(R.layout.banner_viewpager, null)); 
  } else if (viewType == TODAY_NEW_GV1) { 
   return new TODAYViewHolder(mContext, mLayoutInflater.inflate(R.layout.gv_channel, null)); 
  } else if (viewType == PIN_PAI_IV2) { 
   return new PINPAIViewHolder(mContext, mLayoutInflater.inflate(R.layout.iv_pinpai, null)); 
  } 
  return null; 
 } 
 @Override 
 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
  if (getItemViewType(position) == BLACK_5_BANNER0) { 
   BBNViewHolder bbnViewHolder = (BBNViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> module0data = moduleBeanList.get(0).getData(); 
   bbnViewHolder.setData(module0data); 
  } else if (getItemViewType(position) == TODAY_NEW_GV1) { 
   TODAYViewHolder todayViewHolder = (TODAYViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> module1data = moduleBeanList.get(1).getData(); 
   todayViewHolder.setData(module1data); 
  } else if (getItemViewType(position) == PIN_PAI_IV2) { 
   PINPAIViewHolder pinpaiViewHolder = (PINPAIViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> pinpai2data = moduleBeanList.get(2).getData(); 
   pinpaiViewHolder.setData(pinpai2data); 
  } 
 } 
 class PINPAIViewHolder extends RecyclerView.ViewHolder { 
  private final Context mContext; 
  @Bind(R.id.iv_new_chok) 
  ImageView ivNewChok; 
  PINPAIViewHolder(Context mContext, View itemView) { 
   super(itemView); 
   this.mContext = mContext; 
   ButterKnife.bind(this, itemView); 
   ivNewChok = (ImageView) itemView.findViewById(R.id.iv_new_chok); 
  } 
  public void setData(List<WomenBean.WomenData.ModuleBean.DataBean> pinpai2data) { 
   //使用Glide加载图片 
   Glide.with(mContext) 
     .load(pinpai2data.get(0).getImg()) 
     .diskCacheStrategy(DiskCacheStrategy.ALL) 
     .crossFade() //设置淡入淡出效果，默认300ms，可以传参 
     .into(ivNewChok); 
  } 
 }

5.4设置第4种类型–搭配趋势–（使用RecyclerView实现）的适配器


@Override 
 public int getItemCount() { 
  //四种类型都已经完成，返回4 
  return 4; 
 } 
 @Override 
 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
  if (viewType == BLACK_5_BANNER0) { 
   return new BBNViewHolder(mContext, mLayoutInflater.inflate(R.layout.banner_viewpager, null)); 
  } else if (viewType == TODAY_NEW_GV1) { 
   return new TODAYViewHolder(mContext, mLayoutInflater.inflate(R.layout.gv_channel, null)); 
  } else if (viewType == PIN_PAI_IV2) { 
   return new PINPAIViewHolder(mContext, mLayoutInflater.inflate(R.layout.iv_pinpai, null)); 
  } else if (viewType == DAPEIQS_GV3) { 
   //布局：垂直线性，TextView+RecyclerView 
   return new DaPeiViewHolder(mContext, mLayoutInflater.inflate(R.layout.dapeiqs_rv, null)); 
  } 
  return null; 
 } 
 @Override 
 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
  if (getItemViewType(position) == BLACK_5_BANNER0) { 
   BBNViewHolder bbnViewHolder = (BBNViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> module0data = moduleBeanList.get(0).getData(); 
   bbnViewHolder.setData(module0data); 
  } else if (getItemViewType(position) == TODAY_NEW_GV1) { 
   TODAYViewHolder todayViewHolder = (TODAYViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> module1data = moduleBeanList.get(1).getData(); 
   todayViewHolder.setData(module1data); 
  } else if (getItemViewType(position) == PIN_PAI_IV2) { 
   PINPAIViewHolder pinpaiViewHolder = (PINPAIViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> pinpai2data = moduleBeanList.get(2).getData(); 
   pinpaiViewHolder.setData(pinpai2data); 
  } else if (getItemViewType(position) == DAPEIQS_GV3) { 
   DaPeiViewHolder dapeiViewHolder = (DaPeiViewHolder) holder; 
   List<WomenBean.WomenData.ModuleBean.DataBean> dapeiqs6data = moduleBeanList.get(6).getData(); 
   dapeiViewHolder.setData(dapeiqs6data); 
  } 
 } 
 class DaPeiViewHolder extends RecyclerView.ViewHolder { 
  private final Context mContext; 
  private RecyclerView dapeiqs_rv; 
  public DaPeiViewHolder(Context mContext, View itemView) { 
   super(itemView); 
   this.mContext = mContext; 
   dapeiqs_rv = (RecyclerView) itemView.findViewById(R.id.dapeiqs_rv); 
  } 
  public void setData(List<WomenBean.WomenData.ModuleBean.DataBean> dapeiqs6data) { 
   //1.已有数据 
   //2.设置适配器 
   DaPeiQSRecycleViewAdapter adapter = new DaPeiQSRecycleViewAdapter(mContext, dapeiqs6data); 
   dapeiqs_rv.setAdapter(adapter); 
   //recycleView不仅要设置适配器还要设置布局管理者,否则图片不显示 
   LinearLayoutManager manager = new LinearLayoutManager(mContext, LinearLayoutManager.HORIZONTAL, false); 
   dapeiqs_rv.setLayoutManager(manager); 
  } 
 }


public class DaPeiQSRecycleViewAdapter extends RecyclerView.Adapter { 
 private final Context mContext; 
 private final List<WomenBean.WomenData.ModuleBean.DataBean> dapeiqs6data; 
 public DaPeiQSRecycleViewAdapter(Context mContext, List<WomenBean.WomenData.ModuleBean.DataBean> dapeiqs6data) { 
  this.mContext = mContext; 
  this.dapeiqs6data = dapeiqs6data; 
 } 
 @Override 
 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { 
  return new MyViewHolder(LayoutInflater.from(mContext).inflate(R.layout.item_dapeiqs, null)); 
 } 
 @Override 
 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { 
  MyViewHolder myViewHolder = (MyViewHolder) holder; 
  myViewHolder.setData(position); 
 } 
 @Override 
 public int getItemCount() { 
  return dapeiqs6data.size(); 
 } 
 class MyViewHolder extends RecyclerView.ViewHolder { 
  private ImageView iv_figure; 
  public MyViewHolder(View itemView) { 
   super(itemView); 
   iv_figure = (ImageView) itemView.findViewById(R.id.iv_figure); 
  } 
  public void setData(int position) { 
   WomenBean.WomenData.ModuleBean.DataBean dapeiBean = dapeiqs6data.get(position); 
   //使用Glide加载图片 
   Glide.with(mContext) 
     .load(dapeiBean.getImg()) 
     .into(iv_figure); 
  } 
 } 
}

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首页商城分类 recyclerview Android

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