Updated 24 January 2024
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
Let us save following dependency in MyLibrary
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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
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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.
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+--- 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
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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.
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No dependencies |
Case3. When Library Project is Added
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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.
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\--- 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
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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.
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No dependencies |
Case5. Excluding a module from a group of dependency from our library project when building our main project
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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.
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\--- 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
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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:
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+--- 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 (*) |
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