Is there any way to programmatically access power button in android and even on IOS.
Apple is not allowing you to use hardware components completely. They have added some restrictions. They provided the method in the app delegate i.e. applicationDidEnterBackground can catch the home button press .Also they has provided the the API's to access the camera,bluetooth etc .At least this much of API's I know which provided by apple publicly to access the hardware. You cannot access the other hardware elements in your application which not provided publicly by apple .If you are able to do this by any way then also your application will not approved by apple .