TelecomManager.EndCall abgekündigt und dann?

private fun callAction(action: Boolean) {
    //replacement for telecom.endCall() API28, telecom.acceptRingingCall() API26
    try { // true: "acceptRingingCall", false: "endCall"
        if (Build.VERSION.SDK_INT >= 26) {
            val c = Class.forName(telecom.javaClass.name)
            val m = c.getDeclaredMethod(if (action) "acceptRingingCall" else "endCall")
            m.isAccessible = true
            m.invoke(telecom)
        } else { // "acceptRingingCall" not supported, only "endCall"
            val tm = this.getSystemService(TELEPHONY_SERVICE) as TelephonyManager
            var c = Class.forName(tm.javaClass.name)
            var m = c.getDeclaredMethod("getITelephony")
            m.isAccessible = true
            val telephonyService = m.invoke(tm)
            c = Class.forName(telephonyService.javaClass.name)
            m = c.getDeclaredMethod("endCall")
            m.isAccessible = true
            m.invoke(telephonyService)
        }
    } catch (ex: Exception) {
        Log.i("callAction","${ex}")
    }
}