如何在我的 Android 应用中使用和打包 JAR 文件?

我有一个 JAR 形式的 API，我想在我的 Android 应用程序中使用它.不确定它是否应该成为 Eclipse 中项目的一部分，或者单独保存并添加到项目属性中.这个JAR也需要和应用一起打包，那么Android应用是怎么做的呢?

解决方案

如此解释 在评论中提到存在问题 (ClassNotFound)，即使他确实声明了库.
他有:

但是，解决方案很简单:

浪费了1个多小时.伙计，我很生气！
解决方案:确保您的 JAR 是使用 1.6 而不是 1.7 编译的.
唉

I have an API in the form of a JAR that I would like to use in my Android app. Not sure if it should be part of the project in Eclipse or kept separate and added to the project properties. This JAR also needs to be packaged with the application, so how is that done for Android apps?

解决方案

As explained by this SO question:

• Your Project -> right click -> Import -> Archive File -> yourjar.jar
• Your Project -> right click -> Properties -> Java Build Path -> Libraries -> Add Jar -> yourjar.jar

You must add it as "external JAR" files, and set the "Order and Export" in your Eclipse project.

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Update February 2012:

Pacerier mentions in the comment having an issue (ClassNotFound) even though he did declare the library.
He had:

However, the solution was simple:

Over 1 hour wasted. Man was I pissed!
Solution: make sure your JAR is compiled with 1.6 and not 1.7.
Argh