Android Programming Tutorials

Sensing a Disturbance

i.putExtra(ID_EXTRA,

String.valueOf(adapter.getItemId(selection)));

startActivity(i);

}

};

If you rebuild and reinstall the application on a device, you can randomly

choose a restaurant by giving the phone a solid shake.

Extra Credit

Here are some things you can try beyond those step-by-step instructions:

• Store the GPS coordinates of the restaurant via the DetailForm.
  Then, given your current position and the location of the

restaurant, present a compass to help point you in the right

direction, in case you forget where the restaurant is. WARNING:

this may involve icky math.

• Attempt to use the accelerometer to measure your current speed

while walking or jogging. Remind yourself partway through why,

exactly, you elected not to be a physics major in college. If you were

a physics major in college, the author offers his sincere condolences.

Further Reading

More information about accessing and leveraging the orientation and

acceleration sensors in Android is found in the "Sensors" chapter of The

Busy Coder's Guide to Advanced Android Development.

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