Empty-recyclerView-indicator

Show no content indicator for RecyclerView,

This is a reactive model that observes the recyclerView adapter items. It show "no content " when the number of items within the recyclerView is zero. During loading process, it shows a progressBar with loading status. It is not a customView 😄

How to use

How to use.

Installation

implementation 'com.nocontent.emptyrecyclerindicator:RecyclerViewEmptyIndicator:1.0'

Creation of an Instance

Create an instance of the EmptyViewIndicator within the application class.

class MyApplication : Application() {

private lateinit var emptyViewIndicator: EmptyViewIndicator
override fun onCreate() {
  super.onCreate()
  emptyViewIndicator = EmptyViewIndicator.instance()!!
}

fun getEmptyIndicator(): RecyclerViewIndicator {
  return emptyViewIndicator.build()
}

}

Usage in an activity

  //at the top of activity
 lateinit var emptyRecyclerIndicator: RecyclerViewIndicator

 //anywhere
  emptyRecyclerIndicator = (applicationContext as MyApplication).getEmptyIndicator()

  recyclerView.layoutManager = LinearLayoutManager(this)
  emptyRecyclerIndicator.show(this, recyclerView)

Set RecyclerView Adapter

You need to override a method by registering DataObserver within the adapter as below.

override fun registerAdapterDataObserver(observer: AdapterDataObserver) {
    super.registerAdapterDataObserver(observer)
    val myApplication = context.applicationContext as MyApplication
    myApplication.getEmptyIndicator().recyclerViewState(itemList.size)

  }

Refresh the View

The view need to be refreshed when new data is fetched.

   emptyRecyclerIndicator.refresh()