Populate ListView with ArrayAdapter and navigate

Question

For example if I have a class:

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

And I am trying to fill ListView with custom ArrayAdapter and then navigate through this ArrayList "Folders" which is filled with data. I try something like this to show subFolders:

private OnItemClickListener listlistener = new OnItemClickListener() {

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

But it does not work. Is there any suggestions to help solving this problem?

score 0 · Answer 1 · answered Feb 25 '13 at 08:47

0

In your custom ArrayAdapter create a Public method

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

and now

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();

    }
};

answered Feb 25 '13 at 08:47

Kapil Vats

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when i do this way old object stay in the `listView` – pepela Feb 25 '13 at 13:31
how to handle with `getView()` method to display new data? – pepela Feb 25 '13 at 13:52

Populate ListView with ArrayAdapter and navigate

1 Answers1