Android仿微信图片上传带加号且超过最大数隐藏功能

1、仿照微信空间上传图片，显示图片数量以及超过最大，上传按钮隐藏功能

2、上效果图

3、上代码，主要是Adapter类

/**
* Created by zhangyinlei on 2018/3/2 0002.
*/
public class AlbumSelectedShowAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
 private static int TYPE_ADD = 0;//添加图片
 private static int TYPE_COMMON = 1;//普通图片展示
 private Context context;
 private LayoutInflater mLayoutInflater;
 //data
 private int mMaxAlbum;//最大选择图片的数量
 private List<String> mStringList;//图片url集合
 public AlbumSelectedShowAdapter(Context context, List<String> mStringList, int maxAlbum) {
   this.context = context;
   this.mStringList = mStringList;
   this.mMaxAlbum = maxAlbum;
   this.mLayoutInflater = LayoutInflater.from(context);
 }
 @Override
 public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
   if (viewType == TYPE_ADD) {
     return new ItemViewHolderAdd(mLayoutInflater.inflate(R.layout.item_album_selected_add, parent, false));
   } else {
     return new ItemViewHolderCommon(mLayoutInflater.inflate(R.layout.item_album_selected_common, parent, false));
   }
 }
 @Override
 public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
   View itemView = null;
   if (holder instanceof ItemViewHolderAdd) {
     ItemViewHolderAdd itemViewHolderAdd = (ItemViewHolderAdd) holder;
     if (position >= mMaxAlbum) {
       itemViewHolderAdd.itemView.setVisibility(View.GONE);
     } else {
       itemViewHolderAdd.tvNum.setText(position + "/" + mMaxAlbum);
       itemViewHolderAdd.itemView.setVisibility(View.VISIBLE);
       itemView = ((ItemViewHolderAdd) holder).itemView;
     }
   } else if (holder instanceof ItemViewHolderCommon) {
     String url = mStringList.get(position);
     Glide.with(context).load(url).apply(RequestOptions.centerCropTransform()).transition(withCrossFade()).into(((ItemViewHolderCommon) holder).ivCommon);
     itemView = ((ItemViewHolderCommon) holder).itemView;
   }
   if (mOnItemClickListener != null && null != itemView) {
     itemView.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View v) {
         int position = holder.getLayoutPosition();
         mOnItemClickListener.onItemClick(holder.itemView, position);
       }
     });
   }
 }
 @Override
 public int getItemViewType(int position) {
   return position == mStringList.size() ? TYPE_ADD : TYPE_COMMON;
 }
 @Override
 public int getItemCount() {
   return mStringList.size() + 1;//加一代表最后一个添加图片按钮
 }
 public static class ItemViewHolderAdd extends RecyclerView.ViewHolder {
   private TextView tvNum;
   public ItemViewHolderAdd(View itemView) {
     super(itemView);
     tvNum = itemView.findViewById(R.id.tv_album_selected_num);
   }
 }
 public static class ItemViewHolderCommon extends RecyclerView.ViewHolder {
   private ImageView ivCommon;
   public ItemViewHolderCommon(View itemView) {
     super(itemView);
     ivCommon = itemView.findViewById(R.id.iv_album_selected);
   }
 }
 private OnItemClickListener mOnItemClickListener;
 public void setOnItemClickListener(OnItemClickListener onItemClickListener) {
   mOnItemClickListener = onItemClickListener;
 }
 public interface OnItemClickListener {
   void onItemClick(View view, int position);
 }
}

在Activity中使用，recycleView

mStringList = new ArrayList<>();
   mAlbumSelectedShowAdapter = new AlbumSelectedShowAdapter(this, mStringList, mMaxAlbum);
   mRvAlbumSelected.setLayoutManager(new GridLayoutManager(this, 4));
   mRvAlbumSelected.setHasFixedSize(true);
   mRvAlbumSelected.setAdapter(mAlbumSelectedShowAdapter);
   mAlbumSelectedShowAdapter.setOnItemClickListener(new AlbumSelectedShowAdapter.OnItemClickListener() {
     @Override
     public void onItemClick(View view, int position) {
       if (mStringList.size() == position) {
       //选择相册功能
         AlbumUtils.choosePicture(SuggestionActivity.this, false, mMaxAlbum - mStringList.size(), true);
       } else {
         //图片展示界面
       }
     }
   });
 }

总结

以上所述是小编给大家介绍的Android仿微信图片上传带加号且超过最大数隐藏功能网站的支持！

来源：https://blog.csdn.net/llayjun/article/details/79442879