How to Add a Library Project to Android Studio

Adding external library in Android studio

Try this:

File > Project Structure > Dependencies Tab > Add module dependency (scope = compile)

Where the module dependency is the project library Android folder.

Add library to Android Studio project

1. Download the Library from Github.
2. Unzip.
3. In Android Studio go to File > New > Import Module and set the directory to "Library" folder inside "segcontrol-master".

How to add a project as a library in Android Studio?

I would suggest to import your library manually rather than using "Import Module" since it 1) will change directory layout for the library; 2) you can catch bugs (as I did) because Android Studio is still in beta.

To accomplish this:

1) Copy your library folder under /libraries

2) Create build.gradle file inside library folder you've just copied, with similar content:

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.+'
    }
}
apply plugin: 'android-library'

android {
    compileSdkVersion 19
    buildToolsVersion "19.1.0"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 19
    }

    sourceSets {
        main {
            java.srcDirs = ['src']
            resources.srcDirs = ['src']
            aidl.srcDirs = ['src']
            renderscript.srcDirs = ['src']
            res.srcDirs = ['res']
            assets.srcDirs = ['assets']

            manifest.srcFile 'AndroidManifest.xml'
        }
    }
}

3) Add include ':libraries:RootTools' to your settings.gradle

4) Add dependency to the build.gradle under the app module:

dependencies {
    compile project(':libraries:RootTools')
    ...
}

5) Run ./gradlew assembleDebug to assemble your project, including the library.

How to add library project to an existing android project in AndroidStudio

To import library into Android Studio:

• select File > Import, and then select the directory containing the project to import.

• a wizard will open and guide you through the rest of the import process.

When the project import has finished, it will open up a file called "import-summary.txt" which lists all the steps taken during import and suggestions for next steps. For example, it may note files that were not migrated, it may note missing components in your SDK install, and so on.

How to add external library project to android studio 1.2.2? with solution

You just need to create a module and add the external library project to this module. Then add module dependency in project structure. That's all. Android Studio will automatically add everything to Gradle file. You don't need to do these manually.

How do I add a library project to Android Studio?

Update for Android Studio 1.0

Since Android Studio 1.0 was released (and a lot of versions between v1.0 and one of the firsts from the time of my previous answer) some things has changed.

My description is focused on adding external library project by hand via Gradle files (for better understanding the process). If you want to add a library via Android Studio creator just check the answer below with visual guide (there are some differences between Android Studio 1.0 and those from screenshots, but the process is very similar).

Before you start adding a library to your project by hand, consider adding the external dependency. It won’t mess in your project structure. Almost every well-known Android library is available in a Maven repository and its installation takes only one line of code in the app/build.gradle file:

dependencies {
     compile 'com.jakewharton:butterknife:6.0.0'
}

Adding the library

Here is the full process of adding external Android library to our project:

1. Create a new project via Android Studio creator. I named it HelloWorld.
2. Here is the original project structure created by Android Studio:

HelloWorld/
      app/
           - build.gradle  // local Gradle configuration (for app only)
           ...
      - build.gradle // Global Gradle configuration (for whole project)
      - settings.gradle
      - gradle.properties
      ...

3. In the root directory (HelloWorld/), create new folder: /libs in which we’ll place our external libraries (this step is not required - only for keeping a cleaner project structure).
4. Paste your library in the newly created /libs folder. In this example I used PagerSlidingTabStrip library (just download ZIP from GitHub, rename library directory to „PagerSlidingTabStrip" and copy it). Here is the new structure of our project:

HelloWorld/
      app/
           - build.gradle  // Local Gradle configuration (for app only)
           ...
      libs/
           PagerSlidingTabStrip/
                - build.gradle // Local Gradle configuration (for library only)
      - build.gradle // Global Gradle configuration (for whole project)
      - settings.gradle
      - gradle.properties
      ...

5. Edit settings.gradle by adding your library to include. If you use a custom path like I did, you have also to define the project directory for our library. A whole settings.gradle should look like below:

   include ':app', ':PagerSlidingTabStrip'
   project(':PagerSlidingTabStrip').projectDir = new File('libs/PagerSlidingTabStrip')
   

5.1 If you face "Default Configuration" error, then try this instead of step 5,

    include ':app'
    include ':libs:PagerSlidingTabStrip'

6. In app/build.gradle add our library project as an dependency:

   dependencies {
       compile fileTree(dir: 'libs', include: ['*.jar'])
       compile 'com.android.support:appcompat-v7:21.0.3'
       compile project(":PagerSlidingTabStrip")
   }
   

6.1. If you followed step 5.1, then follow this instead of 6,

    dependencies {
        compile fileTree(dir: 'libs', include: ['*.jar'])
        compile 'com.android.support:appcompat-v7:21.0.3'

        compile project(":libs:PagerSlidingTabStrip")
    }

7. If your library project doesn’t have build.gradle file you have to create it manually. Here is example of that file:

       apply plugin: 'com.android.library'
   
       dependencies {
           compile 'com.android.support:support-v4:21.0.3'
       }
   
       android {
           compileSdkVersion 21
           buildToolsVersion "21.1.2"
   
           defaultConfig {
               minSdkVersion 14
               targetSdkVersion 21
           }
   
           sourceSets {
               main {
                   manifest.srcFile 'AndroidManifest.xml'
                   java.srcDirs = ['src']
                   res.srcDirs = ['res']
               }
           }
       }
   

8. Additionally you can create a global configuration for your project which will contain SDK versions and build tools version for every module to keep consistency. Just edit gradle.properties file and add lines:

   ANDROID_BUILD_MIN_SDK_VERSION=14
   ANDROID_BUILD_TARGET_SDK_VERSION=21
   ANDROID_BUILD_TOOLS_VERSION=21.1.3
   ANDROID_BUILD_SDK_VERSION=21
   

   Now you can use it in your build.gradle files (in app and libraries modules) like below:

   //...
   android {
       compileSdkVersion Integer.parseInt(project.ANDROID_BUILD_SDK_VERSION)
       buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
   
       defaultConfig {
           minSdkVersion Integer.parseInt(project.ANDROID_BUILD_MIN_SDK_VERSION)
           targetSdkVersion Integer.parseInt(project.ANDROID_BUILD_TARGET_SDK_VERSION)
       }
   }
   //...
   

9. That’s all. Just click‚ synchronise the project with the Gradle’ icon . Your library should be available in your project.

Google I/O 2013 - The New Android SDK Build System is a great presentation about building Android apps with Gradle Build System: As Xavier Ducrohet said:

Android Studio is all about editing, and debugging and profiling.
It's not about building any more.

At the beginning it may be little bit confusing (especially for those, who works with Eclipse and have never seen the ant - like me ;) ), but at the end Gradle gives us some great opportunities and it worth to learn this build system.

How to create Android Studio project with ONLY a library module

For anyone who is having this same problem, it appears that you truly cannot delete the app module from an Android Studio project. All projects must have an app module, even if the main purpose is to create a library. I ended up making a small example app showing how to use the library, which appears to be the convention.

How to add a library to Gradle build in Android Studio project?

You have to edit your module-level build.gradle (the one you've posted is project-level). It's typically in the "app" folder of your project. Find there dependencies block and add this line:

dependencies {
    implementation fileTree(dir: "libs", include: ["*.jar"])
    ...
}

Then create a folder "libs" near this gradle file and put your .jar library there. Sync the project with Gradle.

Unable to add library to Android Studio project

Here is your step-by-step guide:

1. Create an empty project or open your existing project where you want to add this library.

2. Clone the library project from the git or download the zip and extract it in some other directory.

3. Now, in Android Studio, go to File -> New -> Import Module.... Select the cloned/extracted library directory. Make sure the :placepicker module is selected for import. Then click Finish.

4. Now copy two files bintray.gradle and install.gradle from cloned/extracted project root directory to your own project root directory. Add this point your project structure should look like this:

5. Now open your project level build.gradle. Add ext.kotlin_version = '1.3.72' inside buildscript { and also add following dependencies:

classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.8.5'
classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'

Overall, this will look like:

6. Finally, go to File -> Sync Project with Gradle Files. It will take some time to download the missing dependencies and you have now successfully integrated the library within your project which is fully editable.

7. Now to make this library work in your own app module, in the build.gradle file of your app module, add this inside dependencies section:

api project(':placepicker')

Adding Library Source into Android Studio

Steps to add modules in Android Studio
download zip file & follow steps

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