recyclerview 填充一个图片文件夹,文件夹下面有多个日期文件夹recyclerview怎样分类显示文件夹下面的图片
时间: 2023-08-01 08:11:31 浏览: 86
你可以通过以下步骤实现RecyclerView分类显示文件夹下面的图片:
1. 创建一个包含日期文件夹和图片的数据模型类。
2. 在RecyclerView的Adapter中,重写getItemViewType()函数,根据数据模型类中的日期文件夹类型返回不同的ViewHolder类型。
3. 创建不同的ViewHolder类,用于显示不同的布局,例如日期文件夹所在的ViewHolder和图片所在的ViewHolder。
4. 在RecyclerView的Adapter中,重写onCreateViewHolder()函数,根据ViewHolder类型创建不同的ViewHolder。
5. 在RecyclerView的Adapter中,重写onBindViewHolder()函数,根据ViewHolder类型绑定对应的数据。
举个例子,你的数据模型类可以类似于这样:
```java
public class FolderModel {
private String folderName;
private List<String> imagePaths;
private boolean isDateFolder;
public FolderModel(String folderName, List<String> imagePaths, boolean isDateFolder) {
this.folderName = folderName;
this.imagePaths = imagePaths;
this.isDateFolder = isDateFolder;
}
// getters and setters
}
```
然后你可以在Adapter中这样实现:
```java
public class FolderAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private static final int VIEW_TYPE_DATE_FOLDER = 1;
private static final int VIEW_TYPE_IMAGE = 2;
private List<FolderModel> folderList;
public FolderAdapter(List<FolderModel> folderList) {
this.folderList = folderList;
}
@Override
public int getItemViewType(int position) {
if (folderList.get(position).isDateFolder()) {
return VIEW_TYPE_DATE_FOLDER;
} else {
return VIEW_TYPE_IMAGE;
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == VIEW_TYPE_DATE_FOLDER) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.date_folder_layout, parent, false);
return new DateFolderViewHolder(view);
} else {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.image_layout, parent, false);
return new ImageViewHolder(view);
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
if (holder instanceof DateFolderViewHolder) {
// 绑定日期文件夹ViewHolder的数据
DateFolderViewHolder dateFolderViewHolder = (DateFolderViewHolder) holder;
dateFolderViewHolder.dateFolderNameTextView.setText(folderList.get(position).getFolderName());
} else {
// 绑定图片ViewHolder的数据
ImageViewHolder imageViewHolder = (ImageViewHolder) holder;
Glide.with(imageViewHolder.imageView.getContext())
.load(folderList.get(position).getImagePaths().get(0))
.into(imageViewHolder.imageView);
}
}
@Override
public int getItemCount() {
return folderList.size();
}
// 日期文件夹ViewHolder
private static class DateFolderViewHolder extends RecyclerView.ViewHolder {
TextView dateFolderNameTextView;
DateFolderViewHolder(View itemView) {
super(itemView);
dateFolderNameTextView = itemView.findViewById(R.id.date_folder_name_text_view);
}
}
// 图片ViewHolder
private static class ImageViewHolder extends RecyclerView.ViewHolder {
ImageView imageView;
ImageViewHolder(View itemView) {
super(itemView);
imageView = itemView.findViewById(R.id.image_view);
}
}
}
```
这样,你就可以通过设置数据模型类的isDateFolder属性来控制RecyclerView的分类显示了。
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