Tasker is really useful for battery saving, one of the most common profiles is the "Auto-enable GPS for whatever Apps". While the GPS set:on works perfect for Places, Maps, & Location - Navigation has a common issue - the GPS activation is too slow for the app (it seems). Here is a simple way to fix it for just the Navigation app:
New Context > "Navi" > Application > Navigation
New Task [+] > Tasker > If: %GPS~off
+ > App > Go Home
+ > Misc. > GPS: Set: ON
+ > Tasker > Wait > 50ms
+ > App > Load App > Navigation
+ > Tasker > End If
This profile simply stays in the app of the GPS is already on, but if not - you go home, set GPS on, wait minimal time, and re-enter the navigation app. It's the best workaround I thought of to fix the common issue at this point.
A link to my Google Doc hosting (no log-in required): Navi Profile
Another, slightly more complex, option is to create a shortcut to a Tasker task with a similar function and then a profile to turn off the GPS when done:
From the Tasker main screen:
Tasks > New Task > "Navigation"
+ > Tasker > If > %GPS ~ off
+ > Misc. > GPS: Set: On
+ > Tasker > Wait > 50ms
+ > Tasker > End If
+ > App > Load App > Navigation
With this the GPS will only turn on and wait if the GPS is currently turned off, removing any unnecessary wait time. Next create the following profile:
From the Tasker main screen:
New > "Navigation Exit" > Application > Navigation
New Task > "No Wait"
+ > Tasker > Wait > 0ms
Done
Add Exit Task > New Task > "GPS off"
+ > Misc. > GPS: Set: Off
With this the profile will not cause any additional things to happen when Navigation is launched, but will still turn off GPS when exited. Once you have both of these created, go to your home screen and create a new Shortcut, choose Task, then choose "Navigation". This can also be done as a widget, however the widget will always display text below it and cannot be placed into a folder, whereas a shortcut can be placed in a folder.
