Android Studio - Add dependency to all modules

Question

I have read tons of posts like this one, but they only tell you that you should not add dependencies to the project root build.gradle, which I know.
My situation is: I have a lot of modules that all need the same library. All of them, so I need to configure all of them to have the same library. Is it possible to add this somehow to the root build.gradle or I have add to each project build.gradle the dependency?

You can use subprojects https://proandroiddev.com/reducing-boilerplate-in-gradle-multi-module-projects-2ff2dde5bf95 — onmyway133, May 25 '19 at 17:55

score 16 · Accepted Answer · answered Sep 13 '15 at 14:47

You can do something like this.
It doesn't mean to add a dependency for all modules, but in this way you can centralize a dependency.

In top-level build.gradle

    ext {
        //Version
        supportLibrary = '23.0.1'

        //Support Libraries dependencies
        supportDependencies = [
                appCompat     : "com.android.support:appcompat-v7:${supportLibrary}",
                design        : "com.android.support:design:${supportLibrary}",
        ]
    }

In each module add to build.gradle:

dependencies {
    //......
    compile supportDependencies.appCompat
    compile supportDependencies.design
}

In this way, when you have to update the library, you can simply change only the top-level file.

Thanks for this solution! Really useful! – Chaoz Sep 13 '15 at 20:50 — Chaoz, Sep 13 '15 at 20:50

score 4 · Answer 2 · answered Dec 09 '18 at 21:13

I know the question is a bit old but I started using this which I think would be cleaner if you do not care about what libraries being injected into your module.

root build.gradle

ext {
    commonDependencies = [
            // Layout Libraries
            constraintLayoutApi     : "androidx.constraintlayout:constraintlayout:$constraintlayout_version",
            materialApi             : "com.google.android.material:material:$material_version",
            flexboxApi              : "com.google.android:flexbox:$flexbox_version",

            // Image library (Picasso is alternative)
            glideImpl               : "com.github.bumptech.glide:glide:$glide_version",
            glideCompilerAnno       : "com.github.bumptech.glide:compiler:$glide_version",

            // Network library (Volley is alternative)
            retrofitImpl            : "com.squareup.retrofit2:retrofit:$retrofit_version",
            retrofitJacksonImpl     : "com.squareup.retrofit2:converter-jackson:$retrofit_version",
            retrofitScalarsImpl     : "com.squareup.retrofit2:converter-scalars:$retrofit_version",
            retrofitJava8Impl       : "com.squareup.retrofit2:converter-java8:$retrofit_version",

            // Dependency Injection
            daggerImpl              : "com.google.dagger:dagger:$dagger_version",
            daggerCompilerAnno      : "com.google.dagger:dagger-compiler:$dagger_version",
            // we add this so we can use the android support libraries
            daggerAndroidSupportImpl: "com.google.dagger:dagger-android-support:$dagger_version",
            daggerProcessorAnno     : "com.google.dagger:dagger-android-processor:$dagger_version"
    ]
}

and in app build.gradle:

dependencies {
    api "androidx.appcompat:appcompat:$app_compact_version"
    api "com.google.android.gms:play-services-auth:$play_service_version"

    commonDependencies.each { key, value ->
        if (key.endsWith('Anno')) {
            annotationProcessor value
        } else if (key.endsWith('Impl')) {
            implementation value
        } else if (key.endsWith('Api')) {
            api value
        }
    }
}

As you can see I am checking for API, Implementation, and Annotation by the suffix of the key in the root gradle file.

It helps me. Thanks! Just for others' reference: `root build.gradle` means the `build.gradle` of the Android Project (others are Module. — LiuWenbin_NO., Jan 05 '19 at 05:18
How will Gradle know when to sync and when not to in case you have added an extra dependency in the `ext` list — m'hd semps, Apr 25 '22 at 15:22
Basically it is not automatic at least I didn't work on it to become automatic but it is simple refresh button in the intellij that you can do whenever you add one dependency — navid_gh, Apr 26 '22 at 15:18

score 0 · Answer 3 · edited May 23 '17 at 11:45

0

First you have to add chart library project (module) in Android Studio (your current workspace) File -> Import Module
To add library project (module) in build path, click File -> Project Structure
On the left hand side click on app -> Dependencies tab -> green + button -> Module dependency Now select the library project you already added. For more details refer this link

edited May 23 '17 at 11:45

Community

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answered Sep 13 '15 at 09:27

Naveen Kumar M

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I know how to add a dependency to my project. I want to know if it's possible to (yes, I'm quoting myself) `add this somehow to the root build.gradle or do I have add to each project build.gradle the dependency?` – Chaoz Sep 13 '15 at 09:59
You have to add dependency for all library – Naveen Kumar M Sep 13 '15 at 10:40

Android Studio - Add dependency to all modules

3 Answers3