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Using the Eclipse GUI does not allow one to easily: (a) Add custom build steps (b) Use an automated build system (c) Use build configurations (d) Build the release project with one command.Fortunately, the Android SDK comes equipped with support for Ant.This tutorial will show you how to incorporate an Ant build script into your Android projects,even if you still develop with Eclipse.

"We are building a community-written web site which has also been used to create an O'Reilly Cookbook, both about how to build great Android applications. It is full of how-to information along with code snippets that illustrate the ideas presented. It features both how-to's that overlap with the official documentation, and material that goes beyond this to be more tutorial, more in-depth, or explaining "lessons from the trenches": what actually works to get the application functioning well. Unlike most books written by one, two or a few individuals, this one has input from dozens of contributors, who were all able to view and comment on each others' recipes before the book was published. The published version(s) include printed books, eBooks, and other uses"

using this API to get mobile information which display in "Settings --> About phone"

Android, a rich platform for application development, has an attractive set of user interface elements and data-management capabilities. Android also offers a healthy array of interfacing options. In this article, learn how to interact with Android's varied sensor options to monitor your environment. Sample code shows you how to record audio on an Android phone. Want to build your own baby monitor? Unlock your phone or a door with your own voice activation? Learn how to leverage the hardware capabilities of an Android-equipped device.

For a library to be compatible with Android, it can only reference classes available as part of Android and other classes implemented specifically in the library itself.Android Libraries can contain Java classes, resources, and other project information, but not assets. They can reference other libraries and leverage third party JAR files. They have Android manifest files just like regular Android projects. However, they differ from normal Android projects in an important way: they cannot be compiled into their own application packages or deployed onto devices. They can also not be exported as standalone JAR files. Once referenced from an Android project, the library components are incorporated into the Android application that references them at build time and added to the application package. There is no need to declare the component as the library classes are rolled into the APK directly. In terms of compatibility, the Android project must have an API Level higher than or equal to the API Level set in the Android library.

"Genymotion is a faster Android emulator for app testing and presentation. You can control simulated sensors like battery, GPS, accelerometer with the user-friendly interface, it includes powerful command line tools that allow you to build complex tests."

有什么具体案例么？

这句话是写在第4点 Use the Custom Component中∶ Notice that the MyEditText class is now a separate class file. 1.When the class is nested in the NoteEditor class, this technique will not work. 我还没真实遇到，Diigo先！ 总之告诉我们如果将自己写的View写成内部类时， XML会找不到！