iOS4 location tracking in the background and with a time interval

In iOS4, it possible to do an accurate GPS location update with a preset interva开发者_JAVA百科l while my app is in the background? If so, how?

Thanks!

iOS Multi-Tasking Track GPS Location

This may help some.

No, setting a time interval is not possible. You can just opt in for location updates in the background – either less precise using cell tower triangulation and WiFi hotspots or more precise involving the GPS. Everything else is up to the OS.