Android 4游戏开发入门指南：实战教程

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"《Beginning Android 4 Games Development》是一本由Mario Zechner撰写的专业书籍，专注于在Android 4平台上进行游戏开发的入门教程。这本书的版权属于2011年，强调了所有内容的保留性和法律限制，未经版权所有者和出版社事先书面许可，任何形式的复制、传输，包括但不限于复印、录音或通过任何信息存储和检索系统，都是禁止的。本书的ISBN-13纸版为978-1-4302-3042-7，电子版为978-1-4302-3043-4，表明它不仅提供了纸质版，还适应了数字化阅读的趋势。在书中，作者可能引用了一些商标名、标志和图像，但仅限于编辑性使用，以体现这些品牌的权益，且无意侵犯其商标权。该书的出版得到了多位专业人士的支持，包括总统兼出版商Paul Manning，主要编辑Steve Anglin，开发编辑Matthew Moodie以及技术审稿人Robert Green。他们的协作确保了书中内容的专业性和质量。《Beginning Android 4 Games Development》不仅介绍了基础概念，还涵盖了如何利用Android 4平台（可能是Android 4.0冰激凌圣代或更高版本）的特性和API来设计、编码和测试游戏，旨在帮助读者从零开始掌握Android游戏开发技能。读者可以期待这本书深入讲解游戏架构、用户界面设计、图形渲染、音频处理、物理引擎应用、网络连接等核心主题，同时还会涉及游戏性能优化、兼容性问题解决以及提交到Google Play商店的流程。对于初学者来说，这是一本实用的指南，对于希望扩展到Android游戏开发领域的专业人士，它则提供了一个全面的参考资源。"

CHAPTER 1: Android, the New Kid on the Block

Program, a process ensuring baseline compatibility with third-party applications written

by developers like us. Compatible systems are allowed to participate in the Android

ecosystem, which also includes the Android Market.

The Android Market

The Android Market was opened to the public in October 2008 by Google. It’s an online

software store that enables users to find and install third-party applications. The market

is generally accessible only through the market application on a device. This situation

will change in the near future, according to Google, which promises the deployment of a

desktop-based online store accessible via the browser.

The market allows third-party developers to publish their applications either for free or

as paid applications. Paid applications are available for purchase in only about 30

countries. Selling applications as a developer is possible in a slightly smaller number.

Table 1–1 shows you the countries in which apps can be bought and sold.

Table 1–1. Purchase and Selling Options per Country.

Country User Can Purchase Apps Developer Can Sell Apps

Australia Yes Yes

Austria Yes Yes

Belgium Yes Yes

Brazil Yes Yes

Canada Yes Yes

Czech Republic Yes

Denmark Yes Yes

Finland Yes Yes

France Yes Yes

Germany Yes Yes

Hong Kong Yes Yes

Hungary Yes Yes

India Yes Yes

Ireland Yes Yes

CHAPTER 1: Android, the New Kid on the Block

registration, a developer can immediately start to publish a new application in a matter

of minutes.

The Android Market has no approval process but relies on a permission system. A user

is presented with a set of permissions needed by an application before the installation of

the program. These permissions handle access to phone services, networking access,

access to the Secure Digital (SD) card, and so on. Only after a user has approved these

permissions is the application installed. The system relies on the user doing the right

thing. On the PC, especially on Windows systems, this concept didn’t work out too well.

On Android, it seems to have worked so far; only a few of applications have been pulled

from the market because of malicious behavior.

To sell applications, a developer has to additionally register a Google Checkout

Merchant Account, which is free of charge. All financial business is handled through this

account.

Challenges, Device Seeding, and Google I/O

In an ongoing effort to draw more developers to the Android platform, Google started to

hold challenges. The first challenge, called the Android Developer Challenge (ADC) was

launched in 2008, offering relatively high cash prices for the winning projects. The ADC

was carried out in the subsequent year and was again a huge success in terms of

developer participation. There was no ADC in 2010, which can probably be attributed to

Android now having a considerable developer base and thus not needing any further

actions to get new developers on board.

Google also started a device-seeding program in early 2010. Each developer who had

one or more applications on the market with more than 5,000 downloads and an

average user rating of 3.5 stars or above received a brand new Motorola Droid, Motorola

Milestone, or Nexus One phone. This was a very well-received action within the

developer community, although it was initially met with disbelief. Many considered the e-

mail notifications that came out of the blue to be an elaborate hoax. Fortunately, the

promotion turned out to be a reality, and thousands of devices were sent to developers

across the planet—a great move by Google to keep its third-party developers happy and

make them stick with the platform and to potentially attract new developers.

Google also provides the special Android Dev Phone (ADP) for developers. The first ADP

was a version of the T-Mobile G1 (also known as HTC Dream). The next iteration, called

ADP 2, was a variation of the HTC Magic. Google also released its own phone in the

form of the Nexus One, available to end users. Although initially not released as an ADP,

it was considered by many as the successor to the ADP 2. Google eventually stopped

selling the Nexus One to end users, and it is now available for shipment only to partners

and developers. At the end of 2010, the latest ADP was released; this Samsung device

running Android 2.3 (Gingerbread) is called the Nexus S. ADPs can be bought via the

Android Market, which requires you to have a developer account. The Nexus S can be

bought via a separate Google site at www.google.com/phone.

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