Shopping Navigation List with Three Level Expandable Recycler View

SwiftAdapter is an easy to use expandable list recyclerview adapter

Import Using Gradle

compile 'com.vkondrav.swiftadapter:swift-adapter:0.2.0'

Quickstart

Extend the SwiftAdapter

private static class Adapter extends SwiftAdapter<Adapter.ViewHolder> {

Declare you main ViewHolder

public class ViewHolder extends RecyclerView.ViewHolder {
  public ViewHolder(View itemView) {
    super(itemView);
  }
}

Override count method to declare how many items of that type you will have

@Override
public int getNumberOfLvl0Items() {
  return 10;
}

Override onCreate method to create a specific type of item

@Override
public ViewHolder onCreateLvl0ItemViewHolder(ViewGroup parent) {
  return new ViewHolder(layoutInflater.inflate(R.layout.lvl0_item_layout, parent, false));
}

Override to bind data to the viewholder

@Override
public void onBindLvl0Item(ViewHolder holder, ItemIndex index) {
}

Advanced

There are 4 Levels where the view holders can exist. Each section hosts the items and sections below it.

• Level 0 Items
• Level 1 Sections
  • Level 1 Items
  • Level 2 Sections
    • Level 2 Items
    • Level 3 Sections
      • Level 3 Items

Each layer has a set of methods to construct it. By overriding these methods you can create each layer of the list

int getNumberOf_()
ViewHolder CreateViewHolder_()
void BindViewHolder_(ViewHolder holder, ItemIndex)

Open and Close each section by calling these methods and passing ItemIndex from that section.

void openCloseLvl1Section(ItemIndex itemIndex);
void openCloseLvl2Section(ItemIndex itemIndex);
void openCloseLvl3Section(ItemIndex itemIndex);

ItemIndex can always be obtained from the specific OnBind Method or by calling getCurrentItemIndex and passing the ViewHolder for that section

public ItemIndex getCurrentItemIndex(T holder)

Need Source for Android Studio Project below link

https://github.com/vkondrav/SwiftAdapter

Thank You