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Beginning Android, Fifth Edition by Grant Allen

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Chapter    13

Making Phone Calls

Of all the capabilities, applications and features available to users of Android, and to you as a developer, the one “original” feature that is still pervasive is the ability to make telephone calls. Even now when Android is appearing in cars, planes, home appliances, and more, the very large majority of devices running Android are phones, and will be for some time.

Checking for Phones and “Phonies”

I claimed in the opening to the chapter that the vast majority of devices for Android are phones. That is true, but the growth of tablets and other non-cellular devices means you should think in advance about what telephony support your application must have, what is nice to have, and what it can live without. In ...

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