jdroidcoder / paginationrecyclerview

PaginationRecyclerView

This library based on RecyclerView, and has a purpose easy work with lazy loading (pagination) data.

You can use this library with our other library for work with Network API: https://github.com/JDroidCoder/apiservice

Install:

• Add jitpack repository in gradle(project level)

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

• Add dependency in gradle(app level)

dependencies {
	implementation 'com.github.JDroidCoder:PaginationRecyclerView:v1.0.0'
}

• enjoy ;)

Initialize library:

Init in the xml

<jdroidcoder.ua.paginationrecyclerview.PaginationRecyclerView
		android:id="@+id/paginationRecyclerView"
		android:layout_width="match_parent"
		android:layout_height="match_parent" />

Add OnPageChangeListener

  
 paginationRecyclerView?.setOnPageChangeListener(object : OnPageChangeListener {
    override fun onPageChange(page: Int) {
       // Here you will receive next page
    }
})

Code example: Xml (activity_main):

<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
	    xmlns:tools="http://schemas.android.com/tools"
	    android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    tools:context=".MainActivity">
	    
	    <jdroidcoder.ua.paginationrecyclerview.PaginationRecyclerView
		android:id="@+id/paginationRecyclerView"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		tools:context=".MainActivity" />
</android.support.constraint.ConstraintLayout>

Activity class:

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val adapter =  RecyclerViewAdapter(generateList(1))
        paginationRecyclerView.adapter =adapter
        paginationRecyclerView?.layoutManager = LinearLayoutManager(this)
        paginationRecyclerView?.setOnPageChangeListener(object : OnPageChangeListener {
            override fun onPageChange(page: Int) {
                adapter.addItems(generateList(page))
            }
        })
    }

    private fun generateList(page: Int): ArrayList {
        val arrayList = ArrayList()
        for (i in 0..10) {
            arrayList.add("Item $i page $page")
        }
        return arrayList
    }
}

item_style.xml:

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/itemTextView"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="20dp"
    android:textSize="20sp" />

RecyclerViewAdapter:

class RecyclerViewAdapter(private val items: ArrayList) : RecyclerView.Adapter() {

    override fun onCreateViewHolder(parent: ViewGroup, p1: Int): ViewHolder {
        return ViewHolder(LayoutInflater.from(parent?.context).inflate(R.layout.item_style, parent, false))
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.itemTextView.text = items?.get(position)
    }

    override fun getItemCount(): Int {
        return items.size
    }
    
    fun addItems(items: ArrayList){
        this.items.addAll(items)
        notifyDataSetChanged()
    }
}

class ViewHolder(view: View) : RecyclerView.ViewHolder(view) {
    val itemTextView: TextView = view.itemTextView
}

If you have any question ask us here or write to email: [email protected]