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University Of Arizona *
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137
Subject
Information Systems
Date
Feb 20, 2024
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docx
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2
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Question: What is the importance of settings permissions in app development?
Answer: Permissions allow certain restrictions to be imposed primarily to protect data and code. Without these, codes could be compromised, resulting to defects in functionality.
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 are containers?
Answer: Containers, as the name itself implies, holds objects and widgets together, depending on which specific items are needed and in what particular arrangement that is wanted. Containers may hold labels, fields, buttons, or even child containers, as examples.
Question: What is Orientation?
Answer: Orientation, which can be set using setOrientation(), dictates if the LinearLayout is represented as a row or as a column. Values are set as either HORIZONTAL or VERTICAL.
Question: What are the core components under the Android application architecture?
Answer: There are 5 key components under the Android application architecture: – services
– intent – resource externalization – notifications – content providers
Question: When does ANR occur?
Answer: The ANR dialog is displayed to the user based on two possible conditions. One is when there is no response to an input event within 5 seconds, and the other is when a broadcast receiver is not done executing within 10 seconds.
Question: When dealing with multiple resources, which one takes precedence?
Answer: Assuming that all of these multiple resources are able to match the configuration of
a device, the ‘locale’ qualifier almost always takes the highest precedence over the others.
Question: What is portable wi-fi hotspot?
Answer: Portable Wi-Fi Hotspot allows you to share your mobile internet connection to other wireless device. For example, using your Android-powered phone as a Wi-Fi Hotspot, you can use your laptop to connect to the Internet using that access point.
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