《Android入门介绍.ppt

以上是开发环境的验证 * 1.5创建Android工程 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 主程序：HelloAndroid Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Running HelloAndroid Application Before you can run your application on the Android Emulator, you must create an Android Virtual Device (AVD). An AVD is a configuration that specifies the Android platform to be used on the emulator. You can read more in the Android Virtual Devices document, but if you just want to get started, follow the simple guide below to create an AVD. If you will be running your applications only on actual device hardware, you do not need an AVD — see Developing On a Device for information on running your applicaiton. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Create an AVD 创建AVD使用Android SDK提供的tools。打开命令提示符或终端，导航到tools/ SDK包中的目录并执行： 1.First, you need to select a Deployment Target. To view available targets, execute:android list targets Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. Create an AVD 2. Create a new AVD using your selected Deployment Target. Execute: android create avd --name your_avd_name --target targetID 3. 可以到C:\Documents and Settings\Administrator\.android\avd\目录下查找notest.avd Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 选择 Target AVD Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. HelloAndroid 运行结果 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile . Copyright 2004-2011 Aspose Pty Ltd. 1.6 Android工程目录介绍 1.源文件都在src/目录中， 包括活动Java文件和所有其他的Java应用程序的文件 2.gen/包名/R.java文件。这个文件时Eclipse自动生成的，应用开发者不需要去修改里边的内容。里边内容的修改也是由Eclipse自动处理。R文件对于应用开发者来说基本上没有什么用，但是对Android系统非常有用。在这个文件当中，Android对