如何将 EasyPost 库添加到 Android Studio 项目

Question

我已经下载了库，它是一个包含多个文件的文件夹： https://github.com/EasyPost/easypost-java/archive/master.zip

我添加了我自己的名为myLibs的文件夹，并将解压后的项目文件夹添加到其中（文件夹名为easypost-java-master）。

我的 settings.gradle 看起来如下：

include ':app'
include ':myLibs:easypost-java-master' 

我的 build.gradle 看起来如下：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile files('libs/gson-2.2.4.jar', 'libs/gson-2.2.4-javadoc.jar', 'libs/gson-2.2.4-javadoc.jar')

    compile fileTree(dir: 'myLibs', include: ['easypost-java-master'])
}

我没有收到任何错误并且能够同步。但是当我尝试在我的 MainActivity 中导入例如 import com.easypost.EasyPost; 时，我收到错误

无法解析 easypost

我是不是漏了一步？

Answer 1

Am I missing a step?

是的，大的。在 EasyPost 库 GitHub 配置文件中，有安装说明。你注意到了吗：

Installation

mvn package or build the jar from src!

要做到这一点，只需按照以下步骤操作：

In the latest build of Android Studio 1.2, the creation of JAR library has been made as simple as point and click.

Steps to follow :

• Goto File -> New -> New Module
• Select "Java Library" at the end of the options list
• Enter the name of the jar lib and name of class in it and hit finish button
• Thats it !

The next step is adding your Jar Library as dependency in your app. Simple as that just

• Goto File -> Project Structure -> Select 'app' -> Select 'Dependency'
• Select the '+' at the bottom -> Select 'Module Dependency'
• Select your jar lib module you just created above
• Select Ok and thats it!

....Or you could just add the below line to your App gradle file

dependencies {
      compile fileTree(dir: 'libs', include: ['*.jar']) // Default Gradle Task, should be already present
      compile 'com.android.support:appcompat-v7:21.0.3' // Default Gradle Task, should be already present

      compile project(':nameOfYourJarLibraryModule') // This is your jar library module
 }

Google is promoting the Android Archive(AAR), even though JAR supported is brought back to android studio.To find out the difference between AAR and JAR refer this link

From: Create an Android Jar library for distribution

希望对您有所帮助