Android Operating System

Android robot 2014.svg

Android (OS) Versions :

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2.1 Android 1.0 (API 1)

2.2 Android 1.1 (API 2)

2.3 Android 1.5 Cupcake (API 3)

2.4 Android 1.6 Donut (API 4)

2.5 Android 2.0 Eclair (API 5) 2.5.1 Android 2.0.1 Eclair (API 6) ...

2.6 Android 2.2 Froyo (API 8)

2.7 Android 2.3 Gingerbread (API 9) 2.7.1 Android 2.3.3 Gingerbread (API 10)

2.8 Android 3.0 Honeycomb (API 11)

2.9 Android 4.0 Ice Cream Sandwich (API 14)

2.10 Android 4.1 Jelly Bean (API 16)

2.11 Android 4.4 KitKat (API 19)

2.12 Android 5.0 Lollipop (API 21)

2.13 Android 6.0 Marshmallow (API 23)

2.14 Android 7.0 Nougat (API 24)

2.15 Android 8.0 "O" (API 26)

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Android 8.0 "O" (API 26)=======================================================================

Android (operating system):

Android is a mobile operating system developed by Google,

based on the Linux kernel and designed primarily for touchscreen mobile devices such as smartphones and tablets.

Android's user interface is mainly based on direct manipulation, using touch gestures that loosely correspond to real-world actions, such as swiping, tapping and pinching, to manipulate on-screen objects, along with a virtual keyboard for text input.

In addition to touchscreen devices, Google has further developed Android TV for televisions, Android Auto for cars, and Android Wear for wrist watches, each with a specialized user interface.

Variants of Android are also used on notebooks, game consoles, digital cameras, and other electronics.

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Process Management:

What’s the difference between mobile apps cycle and

desktop apps cycle?

Two key principles

@ Android usually do not kill an app, i.e. apps keep

running even after you switch to other apps .

@ Android kills apps when the memory usage goes too

high, but it saves app state for quick restart later on.

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