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How to update the indicator in android viewpager?


Asked by Mathias Gonzalez on Nov 29, 2021 Android



To update the indicator to show a different page as selected, just call method indicator.setSelectedItem (int, true) from inside ViewPager.OnPageChangeListener.onPageSelected (int). If you're interested, the library was actually designed to make intro screens like the one shown in the above gif.
Also Know,
Dots Indicator for Viewpager made easy — Android! Implementing seamless and smooth dots indicator for your custom viewpager component in a android project is kinda tricky and time consuming.
Also, PagerAdapter is replaced by RecyclerView.Adapter as its based on RecyclerView. FragmentStatePagerAdapter is replaced by FragmentStateAdapter. To get started with ViewPager2, add the dependency to app/build.gradle. implementation "androidx.viewpager2:viewpager2:1.0.0" 1. ViewPager with Static Views
Thereof,
3- Set you project to use the library: Project-> Properties -> Android -> Scroll down to Library section, click Add...and select viewpagerindicator. 4- Now you should be able to import com.viewpagerindicator.TitlePageIndicator.
Additionally,
Note: Because setViewPagerId uses an instance of ViewPager, using it in recycler could lead to id conflicts, so PageIndicatorView will not know properly what is the right ViewPager to work with. Instead you should handle selected indicators on your own programatically.