Android is a mobile operating system developed by Google in the United States; Android is a free and open source operating system based on the Linux kernel. It is mainly suitable for mobile devices, such as smartphones and tablets. It is Led and developed by Google Corporation of the United States and the Open Handset Alliance.
The operating environment of this tutorial: OriginOS 2.0 system, VIVO X80 mobile phone.
Android is a mobile operating system developed by Google in the United States. Android is a free and open source operating system based on the Linux kernel (excluding GNU components). It is mainly used in mobile devices, such as smartphones and tablets, and is led and developed by the American Google Company and the Open Handset Alliance. The Android operating system was originally developed by Andy Rubin and mainly supports mobile phones.
Android’s system architecture, like its operating system, adopts a layered architecture. From the architecture diagram, Android is divided into four layers. From high level to low level, they are the application layer, application framework layer, system runtime layer and Linux kernel layer. The four major components of Android development are: Activity: used to express functions. Service: Runs services in the background and does not provide interface rendering. BroadcastReceiver: used to receive broadcasts. Content Provider: Supports storing and reading data in multiple applications, equivalent to a database.
Android (Android) is a free and open source operating system based on the Linux kernel (excluding GNU components). It is mainly used in mobile devices, such as smartphones and tablets, and is led and developed by the American Google Company and the Open Handset Alliance. The Android operating system was originally developed by Andy Rubin and mainly supports mobile phones. In August 2005, it was acquired and invested by Google. In November 2007, Google formed the Open Handset Alliance with 84 hardware manufacturers, software developers and telecom operators to jointly develop and improve the Android system. Google then released the Android source code under the Apache open source license. The first Android smartphone was released in October 2008. Android has gradually expanded to tablet computers and other areas, such as televisions, digital cameras, game consoles, smart watches, etc. In the first quarter of 2011, Android's global market share surpassed Symbian for the first time, ranking first in the world. In the fourth quarter of 2013, the global market share of Android platform mobile phones reached 78.1%. Android, the operating system developed by Google, celebrated its 5th birthday on September 24, 2013. The number of devices using this system worldwide has reached 1 billion.
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