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Southern New Hampshire University *
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Information Systems
Date
Feb 20, 2024
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docx
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Uploaded by Minnie36
Question: What is Android?
Answer: It is an open-sourced operating system that is used primarily on mobile devices, such as cell phones and tablets. It is a Linux kernel-based system that’s been equipped with rich components that allows developers to create and run apps that can perform both basic and advanced functions.
Question: What are the four essential states of an activity?
Answer: Active – if the activity is at the foreground, Paused – if the activity is at the background and still visible, Stopped – if the activity is not visible and therefore is hidden or
obscured by another activity, Destroyed – when the activity process is killed or completed terminated
Question: What data types are supported by AIDL?
Answer: AIDL has support for the following data types: -string, -charSequence, -List, -Map, -
all native Java data types like int, long, char and Boolean
Question: What are Intents?
Answer: Intents displays notification messages to the user from within the Android enabled device. It can be used to alert the user of a particular state that occurred. Users can be made to respond to intents.
Question: How are escape characters used as attribute?
Answer: Escape characters are preceded by double backslashes. For example, a newline character is created using ‘\\n’
Question: What is AAPT?
Answer: AAPT is short for Android Asset Packaging Tool. This tool provides developers with
the ability to deal with zip-compatible archives, which includes creating, extracting as well as viewing its contents.
Question: Which elements can occur only once and must be present?
Answer: Among the different elements, the “and” elements must be present and can occur only once. The rest are optional, which can occur as many times as needed.
Question: What composes a typical Android application project?
Answer: A project under Android development, upon compilation, becomes an .apk file. This
apk file format is actually made up of the AndroidManifest.xml file, application code, resource files, and other related files.
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