Introduction to android development
Google officially announced this operating system on November 5, 2007. In 2008, Patrick Brady gave a speech "Anatomy & Physiology of an Android" at Google I/O and proposed the Android HAL architecture diagram. HAL exists in the form of *.so files and can separate the Android framework from the Linux kernel. The term Android first appeared in the science fiction novel "The Eve of the Future" published by French writer Lil Adam in 1886. He named the human-looking machine Android.
On February 3, 2010, Linux kernel developer Greg Kroah-Hartman removed the Android driver from the Linux kernel "staging tree". Since then, Android and Linux kernel development have Part ways.
Introduction to Android
Android is an open source mobile phone operating system based on the Linux platform developed by Google. It includes the operating system, user interface and applications - all the software a mobile phone needs to work, without any of the proprietary barriers that have hindered innovation in the mobile industry in the past. Google developed Android in partnership with the Open Handset Alliance, a group of more than 30 technology and wireless leaders including China Mobile, Motorola, Qualcomm, HTC and T-Mobile. By forming deep partnerships with operators, device manufacturers, developers and other interested parties, we hope to form an open ecosystem within the mobile industry by establishing a standardized, open mobile phone software platform . We believe that this move will definitely promote better and faster innovation and provide unpredictable applications and services to mobile users.
As an important part of Google's corporate strategy, Android will further promote the realization of the corporate goal of "providing information to everyone anytime, anywhere". We found that a huge number of mobile phone users around the world have never used any Android-based phone. Google's goal is to make (mobile communications) independent of device or even platform. To this end, Android will complement, not replace, Google's long-standing mobile strategy: to develop mobile services that are both useful and engaging by partnering with phone manufacturers and mobile operators around the world. and promote these products.
The establishment of the Open Handset Alliance and the launch of Android are major changes to the status quo. Before bringing initial benefits, a lot of patience and high investment are required. However, we believe the potential benefits to mobile users around the world are worth the effort. If you are also a developer and are interested in our ideas, please give us another week before Google can provide the SDK. If you are a mobile user, just wait a little longer, some of our partners plan to launch phone products based on the Android platform in the second half of 2008. If you already have a phone you know and love, make sure you have Google Maps for Mobile, Gmail, and some other great apps built just for your phone. Google will continue to work hard to make these services better while also adding more attractive features, apps, and services. In October 2003, Andy Rubin and others founded the Android company and formed the Android team.
On August 17, 2005, Google quietly acquired Android and its team, a high-tech company that had been established for only 22 months. Andy Rubin became Google's vice president of engineering and continued to be responsible for the Android project.
On November 5, 2007, Google officially demonstrated this operating system called Android to the outside world, and on this day Google announced the establishment of a global alliance organization consisting of 34 mobile phone companies Manufacturers, software developers, telecom operators and chip manufacturers are jointly formed, and together with 84 hardware manufacturers, software developers and telecom operators, they form the Open Handset Alliance to unite To develop and improve the Android system, this alliance will support the mobile operating system and application software released by Google. Google has released the source code of Android under the authorization of Apache free open source license.
In 2008, at the Google I/O conference, Google proposed the Android HAL architecture diagram. On August 18 of the same year, Android was approved by the US Federal Communications Commission (FCC). In September 2008 , Google officially released the Android 1.0 system, which is also the earliest version of the Android system.
In April 2009, Google officially launched the Android 1.5 mobile phone. Starting from Android 1.5, Google began to name the Android version after desserts. Android 1.5 was named Cupcake. The system has been greatly improved compared to Android 1.0.
In September 2009, Google released the official version of Android 1.6 and launched the HTC Hero (G3), a mobile phone equipped with the official version of Android 1.6. With its excellent appearance design and new Android 1.6 operating system , HTC Hero (G3) became the most popular mobile phone in the world at that time. Android 1.6 also has an interesting dessert name, it's called Donut.
In February 2010, Linux kernel developer Greg Kroah-Hartman removed the Android driver from the Linux kernel "staging tree". From then on, the Android and Linux development mainstreams will part ways. . In May of the same year, Google officially released the Android 2.2 operating system. Google named the Android 2.2 operating system Froyo, which translates to frozen yogurt.
In October 2010, Google announced that the Android system had reached its first milestone, that is, the number of Android applications that had obtained official digital certification in the electronic market had reached 100,000. The applications of the Android system were growing very rapidly. In December 2010, Google officially released the Android 2.3 operating system Gingerbread.
In January 2011, Google said that the number of new users of Android devices per day reached 300,000. By July 2011, this number increased to 550,000, and the total number of users of Android system devices reached With 135 million users, the Android system has become the system with the highest share in the field of smartphones.
On August 2, 2011, Android mobile phones accounted for 48% of the global smartphone market and dominated the market in the Asia-Pacific region, ending the dominance of Symbian (Symbian system) and leaping to the top No. 1 in the world.
In September 2011, the number of Android system applications has reached 480,000, and in the smartphone market, the Android system's share has reached 43%. It continues to be the number one mobile operating system. On September 19, Google will release a new Android 4.0 operating system, which is named Ice Cream Sandwich by Google.
On January 6, 2012, Google Android Market had 100,000 developers launching more than 400,000 active applications, most of which were free. The Android Market app store catalog surpassed the 400,000 benchmark in the first weekend of the new year, just 4 months after surpassing 300,000 apps.
Earlier in 2011, it took four months for the Android Market to grow from 200,000 to 300,000 apps.