CustomPopupWindow.kt

import android.annotation.SuppressLint
import android.app.Activity
import android.graphics.Color
import android.view.Gravity
import android.view.View
import android.view.ViewGroup
import android.widget.PopupWindow
import android.widget.RelativeLayout
import android.os.Build

class CustomPopupWindow(
  private val activity: Activity
) {

    fun create(view: View? = null) {
        try {
            val customView = view
                ?: RelativeLayout(activity).apply {
                    layoutParams = RelativeLayout.LayoutParams(
                        RelativeLayout.LayoutParams.MATCH_PARENT,
                        RelativeLayout.LayoutParams.MATCH_PARENT
                    )
                    setBackgroundColor(Color.WHITE)
                }

            popupWindow = PopupWindow(
                customView,
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT,
                true
            )
        } catch (e: Exception) {
        }
    }

    fun dismiss() {
        try {
            popupWindow?.dismiss()
        } catch (e: Exception) {
        }
    }

    fun show() {
        showAtLocation(rootView(), Gravity.CENTER, 0, 0)
    }

    fun showAtLocation(parent: View, gravity: Int, x: Int, y: Int) {
        try {
            parent.post {
                popupWindow?.showAtLocation(parent, gravity, x, y)
            }
        } catch (e: Exception) {
        }
    }

    private fun rootView() = activity.findViewById<ViewGroup>(android.R.id.content)

    fun fullScreenImmersive() {
        val view = popupWindow?.contentView
        if (view != null) {
            fullScreenImmersive(view)
            popupWindow?.update()
        }
    }

    @SuppressLint("ObsoleteSdkInt")
    private fun fullScreenImmersive(view: View) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            val uiOptions = (View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                    or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                    or View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
                    or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    or View.SYSTEM_UI_FLAG_FULLSCREEN)
            view.systemUiVisibility = uiOptions
        }
    }

    companion object {
        private var popupWindow: PopupWindow? = null
    }
}