PageIndexer

PageIndexer is an android component that enables quick page turning.

Using PageIndexer in your application

If you are building with Gradle, simply add the following line to the repositories and dependencies section of your build.gradle file:

Use Gradle:

repositories {
  jcenter()
}

dependencies {
  implementation 'com.github.songjiubin.pageindexer:library:0.0.1'
}

Sample

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <com.github.songjiubin.pageindexer.widget.PageNumberIndexer
        android:id="@+id/page_number_indexer"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:colorActive="@color/colorAccent"
        app:colorInActive="@color/colorPrimary"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

viewPager.addOnPageChangeListener(object : ViewPager.SimpleOnPageChangeListener() {
    override fun onPageSelected(position: Int) {
        pageNumberIndexer.setActiveMarker(position)
    }
})
pageNumberIndexer.addOnPageIndexChangeListener(object : PageNumberIndexer.OnPageIndexChangeListener {
    override fun onPageIndexSelected(index: Int) {
        viewPager.setCurrentItem(index, false)
    }
})