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

KotlinRecycler

A set of Kotlin extensions that simplify RecyclerView and eliminate the Adapter boilerplate code.

ReyclerView made simple as one line of code

recyclerView.withSimpleAdapter(dummyData, R.layout.item_recipe) { data ->
  recipe_img.setImageResource(data.drawable)
  recipe_name.text = data.name
}

Setup

Step 1

add in your root build.gradle at the end of repositories

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

Step 2

add the dependency to the app module

implementation 'com.github.vipafattal:KotlinRecycler:1.2.1'

Step 3

add this line to the app module to enable view extensions in RecyclrView Holder

androidExtensions {
   experimental = true
}

for more info about the implementation see see this atricle

Example :

      <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
        tools:itemCount="3"
        tools:listitem="@layout/item_recipe" ></androidx.recyclerview.widget.RecyclerView>

1.now all you need is to call withSimpleAdapter() function on recyclerView then you could call anything from the holder like itemView as shown below:

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val dummyData = listOf(
            Recipe("Chocolate", R.drawable.a),
            Recipe("French Fries", R.drawable.b),
            Recipe("milkshake", R.drawable.c),
            Recipe("Mushroom soup", R.drawable.g),
            Recipe("Cool juice", R.drawable.f),
            Recipe("Cool Watermelon drink", R.drawable.h)
        )
        //Without item clickListener.
        recyclerView.withSimpleAdapter(dummyData, R.layout.item_recipe) { data ->
            recipe_img.setImageResource(data.drawable)
            recipe_name.text = data.name
        }
        //Set onItemClickListener (Avoid object creation each time view onBindViewHolderCalled).
        recyclerView.withSimpleAdapter(dummyData, R.layout.item_recipe,
            onBindView = { data ->
                recipe_img.setImageResource(data.drawable)
                recipe_name.text = data.name
            }, 
        onItemClick = { position ->
                Toast.makeText(context, dummyData[position].name, Toast.LENGTH_LONG).show()
            }
        )
    //OR
        recyclerView.withSimpleAdapter(dummyData, R.layout.item_recipe) { data ->
            recipe_img.setImageResource(data.drawable)
            recipe_name.text = data.name
            //set onItemClickListener each time view get binned to recyclerView (Each time create onClickListener object)
        onItemClickListener { position->          
           Toast.makeText(context, dummyData[position].name, Toast.LENGTH_LONG).show()
        }
        }
    }
}