September 2018
Intermediate to advanced
928 pages
24h 36m
English
Content preview from Professional Android, 4th Edition
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7Using Internet Resources
CONNECTING TO THE INTERNET
One of the most powerful aspects of modern smart devices is their ability to connect to Internet services, and to expose the information—or those services—to users within native applications.
This chapter introduces Android’s Internet connectivity model and techniques for downloading and parsing data efficiently. You learn how to connect to an Internet resource and how to use the SAX Parser, XML Pull Parser, and JSON Reader to parse data feeds. Android requires that you perform all network tasks on a background thread, so you learn how to do this efficiently using a combination of View Models, Live Data, and Asynchronous Tasks.
Expanding the earthquake-monitoring example demonstrates how to tie together all these features.
This chapter also introduces the Download Manager, and you learn how to use it to schedule and manage long-running shared downloads. You are also introduced ...
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