An tool for developers to test GPS related applications. It allow to change mock location without switching applications by using a on-screen joystick.
1. Enable mock location
2. Open the app
3. Switch to the app that you want to test
4. Drop down the notification bar, click the "Toggle" button in GPS Joystick notification
5. Close the notification bar, you will see a red dot on the center of the screen
6. Click on the red dot, it will become green dot
7. Drag the green dot to a direction, a green line will appear. The GPS location will be mocked along the direction.
Note: The north of the compass of your testing app must be pointing to the screen top.