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Code Quality Rank: L4
Programming language: Java
Tags: Animations    
Latest version: v2.1.4

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README

CircleIndicator

A lightweight indicator like in nexus 5 launcher

Download

Gradle

AndroidX
dependencies {
    implementation 'me.relex:circleindicator:2.1.4'
}
Android Support Library
dependencies {
    implementation 'me.relex:circleindicator:1.3.2'
}

Usage

Class Widget
me.relex.circleindicator.CircleIndicator ViewPager
me.relex.circleindicator.CircleIndicator2 RecyclerView
me.relex.circleindicator.CircleIndicator3 ViewPager2 (AndroidX)
ViewPager (CircleIndicator)
ViewPager viewpager = (ViewPager) view.findViewById(R.id.viewpager);
viewpager.setAdapter(adapter);

CircleIndicator indicator = (CircleIndicator) view.findViewById(R.id.indicator);
indicator.setViewPager(viewpager);

// optional
adapter.registerDataSetObserver(indicator.getDataSetObserver());
RecyclerView (CircleIndicator2)
RecyclerView recyclerView = view.findViewById(R.id.recycler_view);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);

PagerSnapHelper pagerSnapHelper = new PagerSnapHelper();
pagerSnapHelper.attachToRecyclerView(recyclerView);

CircleIndicator2 indicator = view.findViewById(R.id.indicator);
indicator.attachToRecyclerView(recyclerView, pagerSnapHelper);

// optional
adapter.registerAdapterDataObserver(indicator.getAdapterDataObserver());
ViewPager2 (CircleIndicator3)
ViewPager2 viewpager = view.findViewById(R.id.viewpager);
viewpager.setAdapter(mAdapter);

CircleIndicator3 indicator = view.findViewById(R.id.indicator);
indicator.setViewPager(viewpager);

// optional
adapter.registerAdapterDataObserver(indicator.getAdapterDataObserver());
Manual control
CircleIndicator indicator = view.findViewById(R.id.indicator);
indicator.createIndicators(5,0);

indicator.animatePageSelected(2)

XML Properties

<me.relex.circleindicator.CircleIndicator
    android:id="@+id/indicator"
    android:layout_width="match_parent"
    android:layout_height="48dp"/>
Properties Default Value
app:ci_width 5dp
app:ci_height 5dp
app:ci_margin 5dp
app:ci_drawable R.drawable.white_radius
app:ci_drawable_unselected R.drawable.white_radius
app:ci_animator R.animator.scale_with_alpha
app:ci_animator_reverse 0
app:ci_orientation horizontal
app:ci_gravity center