Activated the GPS on demand - Android 4.4 topic

I have an application that activated the GPS as needed, works perfect until Android 2.3.
Smartphones and update the Android version is 4.4 and does not activate the GPS only works if the user manually activate.
The problem is that users spend about 8 hours without charging the phone battery and direct GPS on the battery does not last as long as necessary.
I checked on some forums that Google block the GPS demand activation.
Does anyone know if is to enable on-demand Android 4.4 ?

[Q] Any app to check emails on demand? topic

Hi all, I am personally using Wear Mail to manage mail notifications because it allows me to DELETE an email, instead on deleting only the notification. But it is just a way to interact on notifications.
What I am still missing is an app that works like a CLIENT: you tap on it on the watch whenever you want to get into your mail inbox and that's it.
A workaround is using Wear Internet Browser and going into webmail, but a dedicated watch app would be great.
For Pebble an app like that does exist: Workmate and works great! Should not be impossible to develop such an app for Android Wear, but I can't find any.