GenericRecyclerviewAdapter

No need to create a new adapter for each recyclerView in your app any more.

Installation

Step 1. Add the JitPack repository to your build file

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

Step 2. Add the dependency

dependencies {
	        implementation 'com.github.sal3awy:GenericRecyclerviewAdapter:1.0'
	}

Step 3. Enable Data Binding in your app gradle file.

  dataBinding {
        enabled = true
    }

Usage

Step 1. Create interface for actions callbacks on the recyclerView item layout and make it extends ItemRecyclerViewCallback.

interface UserCallBack : ItemRecyclerViewCallback {
    fun userClicked(user: User)
}

Step 2. make the view (Activity or Fragment) implement the interface which extends ItemRecyclerViewCallback

class MainActivity : AppCompatActivity(), UserCallBack {
   ...
}

Step 3. Setup the recylerView adapter

val adapter = GenericRecyclerViewAdapter(this, list, R.layout.item_user)
recyclerView.layoutManager = LinearLayoutManager(this)
recyclerView.adapter = adapter
adapter.notifyDataSetChanged()

Step 4. setup recyclerView item layout XML

in recyclerView item layout declare model data binding variable.

Optionally declare callback data binding variable of type any Interface but must extends ItemRecyclerViewCallback, and declare isSelected data binding variable of type Boolean for view states (like visibility, change colors or drawables based on boolean)

<?xml version="1.0" encoding="utf-8"?>
<layout
		xmlns:android="http://schemas.android.com/apk/res/android"
		xmlns:tools="http://schemas.android.com/tools">
	<data>
		<variable
				name="callback"
				type="com.sal3awy.genericrecyclerviewadapter.UserCallBack"/>
		<variable
				name="model"
				type="com.sal3awy.genericrecyclerviewadapter.User"/>
               <import type="android.view.View" />
               <variable
                                name="isSelected"
                                type="Boolean" />
	</data>
	<TextView
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
                android:text="@{model.name}"
                android:visibility="@{isSelected ? View.VISIBLE: View.GONE}"
                android:onClick="@{()->callback.onUserClicked(model)}"/>
</layout>

Step 5. setup recyclerView item layout View states

use adapter.setItemSelected(user, false) for setting view state. If Second parameter is true you will enable multiple selection which mean save other views state.

Hint

• Step five are optional in case there is no View states.
• Steps one and two are optional in case there is no actions callback, then declare the adapter instance like that val adapter = GenericRecyclerViewAdapter(list = users, layoutId = R.layout.item_user) in Java you must make your view extend ItemRecyclerViewCallback and declare the adapter instance like that GenericRecyclerViewAdapter adapter = new GenericRecyclerViewAdapter(this, users, R.layout.item_user) .