iOS Question Decode poly data

[webhost.company]

Hello
I use https://maps.googleapis.com/maps/api/directions/json for get direction between two location.
I need to decode it and use in googlemap
How do it?

 

[webhost.company]

Excuse me friends
this question's answer is here
https://www.b4x.com/android/forum/threads/navigation-find-a-route-and-navigate.69251/#post-441258
i cannot search good