Force GPS To Come On

I asked this question (Why Does Map Marker Lurch Around The Map) yesterday. One thing I noticed today is that for an activity that uses LocationManager, but not a map I get the GPS

Solution 1:

It depend on global GPS setting - if it's globally on, using LocationManager in your Activity\Fragment will fire "satellite dish". If GPS is globally switched off - using LocationManager will not fire.

The reason is that GPS is a huge power consumerist, and allowing it to run without clear user decision to switch it on will drain the device battery extremely quickly.