Getting the current Fragment instance in the viewpager

Question

Below is my code which has 3 Fragment classes each embedded with each of the 3 tabs on ViewPager. I have a menu option. As shown in the onOpt

Answer 1

You can declare an Array of fragment as register fragments

class DashboardPagerAdapter(fm: FragmentManager?) : FragmentStatePagerAdapter(fm!!) {
    // CURRENT FRAGMENT
    val registeredFragments = SparseArray()

    override fun instantiateItem(container: ViewGroup, position: Int): Any {
        val fragment = super.instantiateItem(container, position) as Fragment
        registeredFragments.put(position, fragment)
        return fragment
    }

    override fun getItem(position: Int): Fragment {
        return when (position) {
            0 -> HomeFragment.newInstance()
            1 -> ConverterDashboardFragment.newInstance()
            2 -> CartFragment.newInstance()
            3 -> CustomerSupportFragment.newInstance()
            4 -> ProfileFragment.newInstance()
            else -> ProfileFragment.newInstance()
        }
    }

    override fun getCount(): Int {
        return 5
    }

}

Then you can use it as

adapter?.let {
    val cartFragment = it.registeredFragments[2] as CartFragment?
    cartFragment?.myCartApi(true)
}