Q: To use a network sensor, you need to implement four steps. Wirte the code required for each of the following steps:
1. Declare a location manager variable and a network listener variable.
2. Access/reference to the location Manager.
3. Instantiate the LocationListener and assign it to the network listener. Write the four methods that need to be implemented. No implementation is required.
4. Send a message to the LocationManager to begin listening for location changes of the Network sensor.