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Learning Mobile App Development: A Hands-on Guide to Building Apps with iOS and Android by Michael Eierman, Jakob Iversen

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Exercises

1. Find an app that runs on both platforms. Download and run it. Identify the similarities and differences between the platforms.

2. Find out what uses the most battery power on the mobile device. On Android find the battery usage information. This can be in different places on different Android devices but is typically in the Settings app. Scroll through the list of power draws. What requires the most? What requires the least? Note: This feature is not available on iOS.

3. Open an app that uses the GPS (for example, Google Maps). Look at the status bar at the top of the device. What icons are there? What are they doing? Watch until the device goes to black and then turn it on again. What changes occurred in the status icons? Now switch ...

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