How to enable the GPS setting automatic [duplicate]

This question already has answers here: Closed 11 years ago.

Possible Duplicate:

Enable GPS programatically like Tasker

Anybody know how to enable the GPS setting automatic? Seems the 开发者_开发技巧 "Toggle Settings" app can handle it, but I want to force open in my app sdk 2.1. some people said

 "Method m =locationManager.getClass().getMethod("updateProviders", new Class[] {});
                m.setAccessible(true);
                m.invoke(locationManager, new Object[]{});"

but in sdk2.1 locationManager class donot have updateProviders. couled you give me some directions or code?

Please help me if you have time.

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Ordinary SDK applications cannot change the GPS enabled state. Only those signed by the firmware signing key can do this, via Settings.Secure.