recyclerview-binder

Android Library for RecyclerView to manage order of items and multiple view types.

Features

Insert any items to wherever you want without calculating their position.
Insert any items in desired order regardless of the order of calling 'add/insert'.
Separate implementations for each view type into their own classes.
Support RxJava.

Sample

Gradle

repositories {
    jcenter()
}
dependencies {
    compile 'jp.satorufujiwara:recyclerview-binder:1.3.2'
}

Quick Start

ViewType decides RecyclerView item's layout.

public enum BinderSampleViewType implements ViewType {

    VIEW_TYPE_1,
    VIEW_TYPE_2,
    VIEW_TYPE_3;

    @Override
    public int viewType() {
        return ordinal();
    }
}

Binder binds data to Views in RecyclerView item.

public class DataBinder1 extends RecyclerBinder<BinderSampleViewType> {

    private final String text;

    public DataBinder1(Activity activity, String text) {
        super(activity, BinderSampleViewType.VIEW_TYPE_1);
        this.text = text;
    }

    @Override
    public int layoutResId() {
        return R.layout.binder_data_1;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(View v) {
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
        ViewHolder holder = (ViewHolder) viewHolder;
        holder.textSection.setText(text);
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        TextView textSection;
        public ViewHolder(View view) {
            super(view);
            textSection = (TextView) view.findViewById(R.id.text_section);
        }
    }
}

Binder added to Adapter is layouted in order of Section.

    RecyclerBinderAdapter<BinderSampleSection, BinderSampleViewType> adapter
            = new RecyclerBinderAdapter<>();

    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
        recyclerView.setAdapter(adapter);

        adapter.add(BinderSampleSection.SECTION_1, new DataBinder1(getActivity(), "in Section1"));
        adapter.add(BinderSampleSection.SECTION_1, new DataBinder2(getActivity(), "in Section1"));
        adapter.add(BinderSampleSection.SECTION_1, new DataBinder3(getActivity(), "in Section1"));

        adapter.add(BinderSampleSection.SECTION_3, new DataBinder2(getActivity(), "in Section3"));
        adapter.add(BinderSampleSection.SECTION_3, new DataBinder1(getActivity(), "in Section3"));

        adapter.add(BinderSampleSection.SECTION_2, new DataBinder3(getActivity(), "in Section2"));
        adapter.add(BinderSampleSection.SECTION_2, new DataBinder2(getActivity(), "in Section2"));
        adapter.add(BinderSampleSection.SECTION_2, new DataBinder1(getActivity(), "in Section2"));
    }

    enum BinderSampleSection implements Section {

        SECTION_1,
        SECTION_2,
        SECTION_3;
        
        @Override
        public int position() {
            return ordinal();
        }
    }

Usage

1. Create class implemented ViewType

Enum is useful for this class.

2. Create classes extends RecyclerBinder

The number of these classes is the same to number of ViewType in Step 1.

3. Create class implemented Section

Enum is useful for this class.

4. Create RecyclerBinderAdapter

RecyclerBinderAdapter<Section, ViewType> adapter = new RecyclerBinderAdapter<>();

5. Control RecyclerView

adapter.add(Section.SECTION_1, binder);
adapter.addIfEmpty(Section.SECTION_1, binder);
adapter.addAll(Section.SECTION_1, List<RecyclerBinder> binders);
adapter.insert(Section.SECTION_1, binder, index);
adapter.remove(Section.SECTION_1, binder);
adapter.removeAll(Section.SECTION_1);
adapter.replaceAll(Section.SECTION_1, List<RecyclerBinder> binders);
adapter.clear();

Use with RxJava

If subscibe observable in RecyclerBinder classes, use RxRecyclerBinder and bindToLifecycle().

myObservable
    .compose(bindToLifecycle())
    .subscribe();

When item removed from adapter, observable unsubscribe. Note : Due to the unsubscription works, please call RecyclerBinderAdapter.clear() in Activity.onDestroy() or Fragment.onDestroyView().

License

Copyright 2015 Satoru Fujiwara

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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