Android platforms and app construction 1.2

WK 1 Zybooks 1.2

Each Android platform has three identifiers what are they

platform version, code name, API level

identifies the Android version with a letter or dessert name

code name

increases with each new Android platform release.

platform version

identifies the Android Application Programming Interface (API) with an increasing integer.

API level

The API level is important to developers because …

the API defines the objects and methods that an app uses to run on an Android device.

the process of gaining privileged control (root access) over the Android OS.

rooting

true or false

Google tends to release a new Android platform at least once a year.

true

true or false

An Android app that uses API level 31 can run on a device that is running Android 11.0.

false

true or false
Most Android users upgrade to the latest Android platform as soon as the platform is released.

false

true or false

A developer is wise to create an app that runs only on the latest Android platform.

false

a collection of libraries and tools for writing Android apps.

android SDK

a virtual machine that runs the .oat files when the app is started.

android run time

contains Bytecode

.class

contains optimized code that is executed by ART.

.oat

Contains Java code written by a developer.

.java

Contains Dalvik bytecode.

.dex

Android apps are composed of four fundamental app components what are they?

activity, service, broadcast receiver, content provider

represents a single screen and handles interaction with the user

activity

runs in the background to perform a lengthy operation

service

delivers system-wide broadcast announcements to an app

broadcast receiver

manages an app's data that is stored on the file system, in a database, or on the web

a content provider