将库（Smack）添加到Android Studio项目

Question

Since I need to make some changes to the Smack library, I want to add the Smack as a library to my Android Studio project. I've download the ZIP file from the Smack Github repository , and did the following steps -- as I found while searching for solutions

(1) Created a new folder libs in my project root folder and copied the extracted and renamed folder /Smack into libs . So it's now the following structure:

root/libs/Smack/

(2) I edited my settings.gradle in the root folder to

include ':app'
include ':libs:Smack'

(3) Via File -> Project Structure -> Modules app -> Dependencies , I've added :libs:Smack as module dependency

(4) I've added the following line to root/app/build.gradle

compile project(':libs:Smack')

According to most sources I found online, this should be it. However, I got an error that Gradle project sync failed . In more detail I get:

/path-to-root/libs/Smack/build.gradle
Error:(42, 0) Project with path ':smack-integration-test' could not be found in project ':libs:Smack'.

When I look into the file and line it says project(':smack-integration-test') . Somehow this cannot be found. However, there is a folder libs/Smack/smack-integration-test . It looks pretty straightforward, but I seem to miss something crucial here.

EDIT: Android Studio actually supports importing Gradle Projects: File -> New -> New Module opens a dialog window where I select Import Gradle Project where I have to select the source directory of, here, Smack. Doing this makes all the correct include statements in settings.gradle .

However, no I get the error:

Error:(386, 0) Could not get unknown property 'clirr' for project ':smack-integration-test' of type org.gradle.api.Project.

Since I'm not familiar enough with Gradle, I have no idea what this might mean, and my Google search also didn't advance me.

Answer 1

I'm not sure I'd recommend creating a multi-module build out of the two projects. This will likely not work as expected. It's likely you'll need to add most/all of the modules in the smack settings.gradle to your own settings.gradle . If you really want to do this, I suggest you use prezi-pride which manages this from command line.

I'm not an android user so not sure which versions(s) of Gradle the android plugin works with. If android supports Gradle 3.1+ then you can use the new composite build support . This is by far the cleanest solution and I recommend this approach

Another solution is to build the projects separately and in your project do

compile fileTree(dir: '../smack/project-1/build/lib', include: '*.jar')
compile fileTree(dir: '../smack/project-2/build/lib', include: '*.jar')
// etc

Yet another solution is to publish the smack artifacts to maven local and reference them from there in your project. This would likely be the second best solution if you can't use composite build

Answer 2

I wouldn't add the project in this way, you can keep it a separate project out of your project folder structure, you would modify it and build it. The simplest way is to copy the build jar file(s) into your project and include it into gradle:

For jar, create the libs folder in your project and copy the file there, gradle including works like this:

compile fileTree(dir: 'libs', include: ['*.jar']) // for all of the jars in the libs folder
compile files('libs/xyz.jar') // for a specific file

In particular for the Smack project, you can do it with a

gradle assemble

in it's root folder

The ouput jar(s) are in each specific folder, per example for android I see:

smack-android\\build\\libs\\

smack-android-extensions\\build\\libs\\

Answer 3

Not a solution for your problem but a possibly even nicer workaround could be the following:

jitpack.io provides you with the ability to add GitHub Repositories to your project as Gradle Dependencies, thus allowing you to omit the process of manually adding the jar. How to achieve that is best described by JitPack itself. In short: Add the JitPack Repository to your build.gradle:

    repositories {
        ...
    maven { url 'https://jitpack.io' }
    }

You can now add the GitHub Repo as a Dependency:

    dependencies {
        compile 'com.github.igniterealtime:Smack:-SNAPSHOT'
    }

After refreshing your project you should be able to use the API as expected.