I'm writing a lot of repetition RecyclerView.Adapter，I feel most of the time write repeat if and else，like getItemViewType，onCreateViewHolder，onBindViewHolder and setSpanSizeLookup getSpanSize，exist a lot of if and else

Write repeat if and else become nightmare...

One day，I decided RecyclerView.Adapter use all if and else wipe out，let RecyclerView.Adapter Automated configuration.

中文文档

• Use ViewHolder.class and reflect dynamic create ViewHolder
• Use ViewHolder.class.hashCode() as RecyclerVew.Adapter ViewType
• Use package class to ViewType，spanSize build connection，Is no longer create field or extend class
• Use AutoHolder，dynamic set model
• Create ViewHolder can set parameter，stand by key and value
• Stand by GridLayoutManager setSpanSizeLookup，create complex arrangement

---

AutoRecyclerAdapter let Recycler. Adapter all methods Automated configuration. developer need outside config ViewHolder and Data. No need custom Recycler.Adapter. Stand by create complex arrangement and fast create like shopping app home page layout

Purpose：help developer no custom Recycler.Adapter

Screenshots

Usage

To one exist seven different ViewHolder page as example，like shopping app home page layout

Seven different List set up to seven different ViewHolder

---

1, Set up seven different ViewHolder，use Holder.class.hashCode() as ViewType

    autoRecyclerAdapter = new AutoRecyclerAdapter();
    manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override public int getSpanSize(int position) {
    return autoRecyclerAdapter.getSpanSize(position);
    }
    });


    autoRecyclerAdapter.setHolder(AutoBannerHolder.class, R.layout.item_banner, this)
    .setHolder(AutoTypeAHolder.class, R.layout.item_type_a)
    .setHolder(AutoTypeBHolder.class, R.layout.item_type_b)
    .setHolder(AutoTypeCHolder.class, R.layout.item_type_c)
    .setHolder(AutoTypeDHolder.class, R.layout.item_type_d)
    .setHolder(AutoTypeEHolder.class, R.layout.item_type_e)
    .setHolder(AutoTypeFHolder.class, R.layout.item_type_f);

2, Network reuqest seven different list

    List<ZhaoBean> zhaoList = ModelHelper.getZhaoList(1);
    List<QianBean> qianList = ModelHelper.getQianList(10);
    List<SunBean> sunList = ModelHelper.getSunList(1);
    List<LiBean> liList = ModelHelper.getLiList(4);
    List<ZhouBean> zhouList = ModelHelper.getZhouList(10);
    List<WuBean> wuList = ModelHelper.getWuList(1);
    List<ZhengBean> zhengList = ModelHelper.getZhengList(30);

3, Set up seven different List to ViewHolder，use Holder.class.hashCode() as ViewType

    autoRecyclerAdapter.setDataListSpan(AutoBannerHolder.class, zhaoList, SPAN_SIZE)
    .setDataListSpan(AutoTypeAHolder.class, qianList, SPAN_SIZE / 5)
    .setDataListSpan(AutoTypeBHolder.class, sunList, SPAN_SIZE)
    .setDataListSpan(AutoTypeCHolder.class, liList, SPAN_SIZE / 2)
    .setDataListSpan(AutoTypeDHolder.class, zhouList, SPAN_SIZE / 5)
    .setDataListSpan(AutoTypeEHolder.class, wuList, SPAN_SIZE)
    .setDataListSpan(AutoTypeFHolder.class, zhengList, SPAN_SIZE / 2)
    .notifyDataSetChanged();

Other

1, if only use one List and one ViewHolder

    autoRecyclerAdapter = new AutoRecyclerAdapter();
    .setHolder(AutoTypeAHolder.class, R.layout.item_type_a);

    autoRecyclerAdapter.setDataList(AutoTypeAHolder.class, qianList)
                        .notifyDataSetChanged();

2, if use two List and two ViewHolder

    autoRecyclerAdapter = new AutoRecyclerAdapter();
    .setHolder(AutoTypeAHolder.class, R.layout.item_type_a)
    .setHolder(AutoTypeBHolder.class, R.layout.item_type_b);

    autoRecyclerAdapter.setDataList(AutoTypeAHolder.class, qianList)
                        .setDataList(AutoTypeBHolder.class, sunList)
                        .notifyDataSetChanged();

3, if use GridLayoutManager setSpanSizeLookup

    autoRecyclerAdapter = new AutoRecyclerAdapter();
    manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override public int getSpanSize(int position) {
    return autoRecyclerAdapter.getSpanSize(position);
    }
    });

    autoRecyclerAdapter = new AutoRecyclerAdapter();
    .setHolder(AutoTypeAHolder.class, R.layout.item_type_a)
    .setHolder(AutoTypeBHolder.class, R.layout.item_type_b);

    int spanSizeA = 2;
    int spanSizeB = spanSizeA / 2;

    autoRecyclerAdapter.setDataList(AutoTypeAHolder.class, qianList, spanSizeA)
                        .setDataList(AutoTypeBHolder.class, sunList, spanSizeB)
                        .notifyDataSetChanged();

Expand

1，Stand by to ViewHolder transfer parameter: key and value like map

    public <H extends AutoHolder> AutoRecyclerAdapter setHolderToData(Class<H> holderClass,
        int layoutRes, Map<String, Object> dataMap) {
        return setHolderToData(holderClass.hashCode(), holderClass, layoutRes, dataMap);
    }

    public <H extends AutoHolder> AutoRecyclerAdapter setHolderToListener(Class<H> holderClass,
    int layoutRes, String key, Object value, OnAutoHolderListener listener) {
        Map<String, Object> dataMap = new HashMap<>();
        dataMap.put(key, value);
        dataMap.put(AutoHolder.LISTENER, listener);
        return setHolderToData(holderClass.hashCode(), holderClass, layoutRes, dataMap);
    }

2，Stand by use GridLayoutManager setSpanSizeLookup，create complex arrangement

    public <H extends AutoHolder, M> AutoRecyclerAdapter setDataObjectSpan(Class<H> holderClass,
        M bean, int spanSize) {
        return setDataObject(holderClass.hashCode(), bean, spanSize);
    }

    public <H extends AutoHolder, M> AutoRecyclerAdapter setDataListSpan(Class<H> holderClass,
    List<M> list, int spanSize) {
        return setDataList(holderClass.hashCode(), list, spanSize);
    }

Class

One core class，four auxiliary class

name	description
AutoRecyclerAdapter	Automated configuration Recycler.Adapter core class
AutoHolder	Automated configuration need ViewHolder
AutoPackage	AutoRecyclerAdapter need model
AutoHolderPackage	Automated create VewHolder need model
OnAutoHolderListener	AutoHolder outside build connection example

Gradle

Add it in your root build.gradle at the end of repositories:

    allprojects {
        repositories {
            ...
            maven { url 'https://jitpack.io' }
        }
    }

Add the dependency:

    dependencies {
            compile 'com.github.teambition:AutoRecyclerAdapter:v1.5'
    }

Proguard

-keep public class * extends zhan.auto_adapter.AutoHolder {
    public <init>(android.view.View, java.util.Map);
}

Want to learn about details to Blog

Developed by

ruzhan - dev19921116@gmail.com

License

Copyright 2017 ruzhan

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.