Hello,
I have gone through your requirements, you want to add toast message while user click on cancel from turn on gps dialog.
So, Yes I am ready to do this Job.
I can start work on it right now and will deliver code within half hour.
Let me tell you about myself, I am fresher on this platform but I have worked on more than 50 android applications in five years of my professional career.
I have expertise in android development, full knowledge of Android life cycle - Material design - REST api - Sqlite database - Payment integration - Third party library integration - Background services - Firebase.
One more thing I am full time freelancer so will always available for support and communication.
Let me know if you are interested, I am ready to discuss everything before you award me this task.
Thanks,
Hardip