DelegateAdapters

Simplify creating recycler view adapters with many different view types. This lib is inspired by Hannes Dorfmann AdapterDelegates.

Article about it on Russian.

Dependencies

android {
    //...
    viewBinding { enabled = true }
}
dependencies {
    implementation 'com.github.Liverm0r:delegateadapters:4.0'
}

You also have to add this in your project build.gradle

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

Examples

Write a model, which represents ui data:

data class ImageItem(val title: String, @DrawableRes val imageRes: Int)

Write a delegate adapter:

class ImageDelegateAdapter(private val clickListener: View.OnClickListener) :
    ViewBindingDelegateAdapter<ImageItem, ImageItemBinding>(ImageItemBinding::inflate) {

    override fun ImageItemBinding.onBind(item: ImageItem) {
        tvTitle.text = item.title
        imgBg.setOnClickListener(clickListener)
        imgBg.setImageResource(item.imageRes)
    }

    override fun isForViewType(item: Any): Boolean = item is ImageItem

    override fun ImageItem.getItemId(): Any = title
}

Check ImageItemBinding.onBind part. This works like the basic view holder without creating one. Just override onBind method. For this to work you need to turn on viewBinding:

viewBinding { enabled = true }

Now you can use DiffUtilCompositeAdapter just like the base RecyclerView.Adapter, composing it with whatever amount of delegate adapters:

    val adapter = CompositeDelegateAdapter(
        TxtDelegateAdapter(),
        CheckDelegateAdapter(),
        GenerateItemsDelegateAdapter { generateNewData() }
    )

See example in code: BaseExampleActivity.kt

License

Copyright 2017 Artur Dumchev 

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.