Gradle: excluding dependencies

There are situation in modular approach when you want to exclude some of the dependency from that the library project used. This happens because of many reason. Either we use a latest dependency or we have transitive dependency issue.

In this blog we are going to watch how dependencies are excuded from library project.

Let Us first create two project

GradleDemo (our main project)
MyLibrary (Android Library project)

Let us save following dependency in MyLibrary

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

compile 'com.android.support:appcompat-v7:23.2.0'

compile 'com.android.support:design:23.2.0'

}

Now let us draw dependency tree hierarchy on different case.

Note: we can draw dependency tree graph using android studio terminal (command prompt) by following command

gradle app:dependencies

or use gradle –gui for graphic user interface.

Case 1. When no library project is Added

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

compile 'com.android.support:appcompat-v7:23.2.0'

compile 'com.android.support:design:23.2.0'

}

Result1.

+--- com.android.support:appcompat-v7:23.2.0
|    +--- com.android.support:support-v4:23.2.0
|    |    \--- com.android.support:support-annotations:23.2.0
|    +--- com.android.support:animated-vector-drawable:23.2.0
|    |    \--- com.android.support:support-vector-drawable:23.2.0
|    |         \--- com.android.support:support-v4:23.2.0 (*)
|    \--- com.android.support:support-vector-drawable:23.2.0 (*)
\--- com.android.support:design:23.2.0
     +--- com.android.support:recyclerview-v7:23.2.0
     |    +--- com.android.support:support-annotations:23.2.0
     |    \--- com.android.support:support-v4:23.2.0 (*)
     +--- com.android.support:appcompat-v7:23.2.0 (*)
     \--- com.android.support:support-v4:23.2.0 (*)

+--- com.android.support:appcompat-v7:23.2.0

| +--- com.android.support:support-v4:23.2.0

| | \--- com.android.support:support-annotations:23.2.0

| +--- com.android.support:animated-vector-drawable:23.2.0

| | \--- com.android.support:support-vector-drawable:23.2.0

| | \--- com.android.support:support-v4:23.2.0 (*)

| \--- com.android.support:support-vector-drawable:23.2.0 (*)

\--- com.android.support:design:23.2.0

+--- com.android.support:recyclerview-v7:23.2.0

| +--- com.android.support:support-annotations:23.2.0

| \--- com.android.support:support-v4:23.2.0 (*)

+--- com.android.support:appcompat-v7:23.2.0 (*)

\--- com.android.support:support-v4:23.2.0 (*)

Case2. When no dependency is added in the main project

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    //    compile 'com.android.support:appcompat-v7:23.2.0'
    //    compile 'com.android.support:design:23.2.0'
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

// compile 'com.android.support:appcompat-v7:23.2.0'

// compile 'com.android.support:design:23.2.0'

}

Result2.

No dependencies

1	No dependencies

Case3. When Library Project is Added

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    //    compile 'com.android.support:appcompat-v7:23.2.0'
    //    compile 'com.android.support:design:23.2.0'
    compile project(':mylibrary')
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

// compile 'com.android.support:appcompat-v7:23.2.0'

// compile 'com.android.support:design:23.2.0'

compile project(':mylibrary')

}

Result3.

\--- project :mylibrary
     +--- com.android.support:appcompat-v7:23.2.0
     |    +--- com.android.support:support-v4:23.2.0
     |    |    \--- com.android.support:support-annotations:23.2.0
     |    +--- com.android.support:animated-vector-drawable:23.2.0
     |    |    \--- com.android.support:support-vector-drawable:23.2.0
     |    |         \--- com.android.support:support-v4:23.2.0 (*)
     |    \--- com.android.support:support-vector-drawable:23.2.0 (*)
     \--- com.android.support:design:23.2.0
          +--- com.android.support:recyclerview-v7:23.2.0
          |    +--- com.android.support:support-annotations:23.2.0
          |    \--- com.android.support:support-v4:23.2.0 (*)
          +--- com.android.support:appcompat-v7:23.2.0 (*)
          \--- com.android.support:support-v4:23.2.0 (*)

\--- project :mylibrary

+--- com.android.support:appcompat-v7:23.2.0

| +--- com.android.support:support-v4:23.2.0

| | \--- com.android.support:support-annotations:23.2.0

| +--- com.android.support:animated-vector-drawable:23.2.0

| | \--- com.android.support:support-vector-drawable:23.2.0

| | \--- com.android.support:support-v4:23.2.0 (*)

| \--- com.android.support:support-vector-drawable:23.2.0 (*)

\--- com.android.support:design:23.2.0

+--- com.android.support:recyclerview-v7:23.2.0

| +--- com.android.support:support-annotations:23.2.0

| \--- com.android.support:support-v4:23.2.0 (*)

+--- com.android.support:appcompat-v7:23.2.0 (*)

\--- com.android.support:support-v4:23.2.0 (*)

Case4. Excluding a group of dependency from our library project when building our main project

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    //    compile 'com.android.support:appcompat-v7:23.2.0'
    //    compile 'com.android.support:design:23.2.0'
    compile (project(':mylibrary')){
        exclude group:'com.android.support'
    }
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

// compile 'com.android.support:appcompat-v7:23.2.0'

// compile 'com.android.support:design:23.2.0'

compile (project(':mylibrary')){

exclude group:'com.android.support'

}

Result4.

No dependencies

1	No dependencies

Case5. Excluding a module from a group of dependency from our library project when building our main project

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    //    compile 'com.android.support:appcompat-v7:23.2.0'
    //    compile 'com.android.support:design:23.2.0'
    compile (project(':mylibrary')){
        exclude group:'com.android.support', module:'design'
    }
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

// compile 'com.android.support:appcompat-v7:23.2.0'

// compile 'com.android.support:design:23.2.0'

compile (project(':mylibrary')){

exclude group:'com.android.support', module:'design'

}

Result5.

\--- project :mylibrary
     \--- com.android.support:appcompat-v7:23.2.0
          +--- com.android.support:support-v4:23.2.0
          |    \--- com.android.support:support-annotations:23.2.0
          +--- com.android.support:animated-vector-drawable:23.2.0
          |    \--- com.android.support:support-vector-drawable:23.2.0
          |         \--- com.android.support:support-v4:23.2.0 (*)
          \--- com.android.support:support-vector-drawable:23.2.0 (*)

\--- project :mylibrary

\--- com.android.support:appcompat-v7:23.2.0

+--- com.android.support:support-v4:23.2.0

| \--- com.android.support:support-annotations:23.2.0

+--- com.android.support:animated-vector-drawable:23.2.0

| \--- com.android.support:support-vector-drawable:23.2.0

| \--- com.android.support:support-v4:23.2.0 (*)

\--- com.android.support:support-vector-drawable:23.2.0 (*)

Case 6: When same dependencies are present in the library project

dependencies {
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.2.0'
    compile 'com.android.support:design:23.2.0'
    compile(project(':mylibrary'))
}

dependencies {

compile fileTree(include: ['*.jar'], dir: 'libs')

testCompile 'junit:junit:4.12'

compile 'com.android.support:appcompat-v7:23.2.0'

compile 'com.android.support:design:23.2.0'

compile(project(':mylibrary'))

}

Result 6:

+--- com.android.support:appcompat-v7:23.2.0
|    +--- com.android.support:support-v4:23.2.0
|    |    \--- com.android.support:support-annotations:23.2.0
|    +--- com.android.support:animated-vector-drawable:23.2.0
|    |    \--- com.android.support:support-vector-drawable:23.2.0
|    |         \--- com.android.support:support-v4:23.2.0 (*)
|    \--- com.android.support:support-vector-drawable:23.2.0 (*)
+--- com.android.support:design:23.2.0
|    +--- com.android.support:recyclerview-v7:23.2.0
|    |    +--- com.android.support:support-annotations:23.2.0
|    |    \--- com.android.support:support-v4:23.2.0 (*)
|    +--- com.android.support:appcompat-v7:23.2.0 (*)
|    \--- com.android.support:support-v4:23.2.0 (*)
\--- project :mylibrary
     +--- com.android.support:appcompat-v7:23.2.0 (*)
     \--- com.android.support:design:23.2.0 (*)

+--- com.android.support:appcompat-v7:23.2.0

| +--- com.android.support:support-v4:23.2.0

| | \--- com.android.support:support-annotations:23.2.0

| +--- com.android.support:animated-vector-drawable:23.2.0

| | \--- com.android.support:support-vector-drawable:23.2.0

| | \--- com.android.support:support-v4:23.2.0 (*)

| \--- com.android.support:support-vector-drawable:23.2.0 (*)

+--- com.android.support:design:23.2.0

| +--- com.android.support:recyclerview-v7:23.2.0

| | +--- com.android.support:support-annotations:23.2.0

| | \--- com.android.support:support-v4:23.2.0 (*)

| +--- com.android.support:appcompat-v7:23.2.0 (*)

| \--- com.android.support:support-v4:23.2.0 (*)

\--- project :mylibrary

+--- com.android.support:appcompat-v7:23.2.0 (*)

\--- com.android.support:design:23.2.0 (*)

Shubham Agarwal 14 December 2016

. . .

Gradle: excluding dependencies

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