使用ArrayAdapter填充ListView并导航

Question

例如，如果我有一个班级：

class Folder {
    public String name;
    public ArrayList<Folder> subFolders;
    public ArrayList<Folder> subFolders;
}

我正在尝试使用自定义ListView填充ArrayAdapter，然后浏览填充了数据的ArrayList“文件夹”。我尝试这样的事情来展示subFolders：

private OnItemClickListener listlistener = new OnItemClickListener() {

    @Override
    public void onItemClick(int position, long arg3) {
        currentFolder = (Category) parent.getItemAtPosition(position);
        folders = currentFolder.subFolders;
        folderAdapter.notifyDataSetChanged();
    }
};

但它不起作用。有什么建议可以帮助解决这个问题吗？

Answer 1

在自定义ArrayAdapter中创建一个Public方法

public void setList(List<Item> items){
   this.items = items;
}

现在

private OnItemClickListener listlistener = new OnItemClickListener() {

    @Override
    public void onItemClick(int position, long arg3) {

        currentFolder = (Category) parent.getItemAtPosition(position);

        folders = currentFolder.subFolders;
        folderAdapter.setList(folders);
        folderAdapter.notifyDataSetChanged();

    }
};