关于导入android SDK中Samples下面的例子报错的解决办法!

本文解决在导入Android Project时遇到的R.java文件缺失及使用match_parent布局无效的问题。通过调整导入时的Build Target版本,先导入失败版本,再导入正确版本,最终成功解决。

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        不知道大家有没有这个错,右键——>new——>Android Project——>Create project from existing source然后选择Sample下面的例子导入,会找不到R.java这个文件,同时也提示match_parent无效。

        在网上找了一下,各有解释,经过试验,我发现可以这样做:

1、第一次导入的时候Build Target选择其它版本的,底的不行就换高的,然后导入,你会发现仍然会提示match_parent无效,不要着急,看看你的R.java,是不是有了呢?

2、删除你刚才导入的工程,注意:别把本地文件给删了。然后再导入,不过这次就要选择你打破如的例子所在的SDK了,例如我导入asamples\android-8里面的NotePad例子,就选择android 2.2版本,然后Finish,怎么样,是不是R.java有啦,match_parent也不会提示无效了?



查了一下,match_parent是2.2版本才开始有的一个layout,所以在2.2版本之前的sdk中都会提示无效的!

List of Sample Apps The list below provides a summary of the sample applications that are available with the Android SDK. Using the links on this page, you can view the source files of the sample applications in your browser. You can also download the source of these samples into your SDK, then modify and reuse it as you need. For more information, see Getting the Samples. API Demos A variety of small applications that demonstrate an extensive collection of framework topics. Backup and Restore A simple example that illustrates a few different ways for an application to implement support for the Android data backup and restore mechanism. Bluetooth Chat An application for two-way text messaging over Bluetooth. BusinessCard An application that demonstrates how to launch the built-in contact picker from within an activity. This sample also uses reflection to ensure that the correct version of the contacts API is used, depending on which API level the application is running under. Contact Manager An application that demonstrates how to query the system contacts provider using the ContactsContract API, as well as insert contacts into a specific account. Home A home screen replacement application. JetBoy A game that demonstrates the SONiVOX JET interactive music technology, with JetPlayer. Live Wallpaper An application that demonstrates how to create a live wallpaper and bundle it in an application that users can install on their devices. Lunar Lander A classic Lunar Lander game. Multiple Resolutions A sample application that shows how to use resource directory qualifiers to provide different resources for different screen configurations. Note Pad An application for saving notes. Similar (but not identical) to the Notepad tutorial. SampleSyncAdapter Demonstrates how an application can communicate with a cloud-based service and synchronize its data with data stored locally in a content provider. The sample uses two related parts of the Android framework — the account manager and the synchronization manager (through a sync adapter). Searchable Dictionary A sample application that demonstrates Android's search framework, including how to provide search suggestions for Quick Search Box. Snake An implementation of the classic game "Snake." Soft Keyboard An example of writing an input method for a software keyboard. Spinner A simple application that serves as an application-under-test for the SpinnerTest sample application. SpinnerTest An example test application that contains test cases run against the Spinner sample application. To learn more about the application and how to run it, please read the Activity Testing tutorial. TicTacToeLib An example of an Android library project that provides a game-play Activity to any dependent application project. For an example of how an application can use the code and resources in an Android library project, see the TicTacToeMain sample application. TicTacToeMain An example of an Android application that makes use of code and resources provided in an Android library project. Specifically, this application uses code and resources provided in the TicTacToeLib library project. Wiktionary An example of creating interactive widgets for display on the Android home screen. Wiktionary (Simplified) A simple Android home screen widgets example.
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