Android Studio Library project error

Question

I have imported a module into my project. When i rebuilt the project , AS gave me an error saying Warning:Dependency Lib:unspecified on project app resolves to an APK archive which is not supported as a compilation dependency. I searched and changed apply plugin: 'com.android.application' to apply plugin: 'com.android.library' and also removed ApplicationId from defaultConfig. Yet i am getting this same error "Warning:Dependency Lib:unspecified on project app resolves to an APK archive which is not supported as a compilation dependency." Can any one help me?

Here is my gradle code:

apply plugin: 'com.android.library'

    android {
    compileSdkVersion 23
    buildToolsVersion "23.0.1"

    defaultConfig {
        minSdkVersion 12
        targetSdkVersion 23
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    }

    dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:design:23.1.0'
    compile project(':DimenLib')
    }

Disafforest

can you post your gradle code? – Personally

@Disafforest Is this the gradle code of module or app , also the error you are getting "Warning:Dependency Lib:unspecified" shows it cannot find the lib that is why showing unspecified – Briscoe

as per same @Briscoe suggest if you developing app your gradle have apply plugin: 'com.android.application' else if it is module, your gradle have apply plugin: 'com.android.library' – Personally

check this – Personally

@Briscoe ..How stupid i was. I changed apply plugin: 'com.android.library' in my app and not in module. But i have another doubt. Will library project take build?? – Disafforest

@David, can you please be more specific what was the change you made? I changed it in build.grade(Module:app), that's the only "apply plugin" I find in the project... – Pirogue

@Mor Are you getting error while adding library project? – Disafforest

@Disafforest Yes, just like in your question. I try to add this to my project: github.com/ZieIony/MaterialRecents – Pirogue

@Mor Please check that you have apply plugin: 'com.android.library' in the build.gradle of your library project. – Disafforest

@Mor Is there a specific reason you want to add the project as a library. You could simply add this 'com.github.ZieIony:MaterialRecents:d2aec46f48' in your build.gradle(Module:app) – Disafforest

@Disafforest That's exactly what I do... and I also added maven { url "jitpack.io" } in the repositories, just like he says, and I get this error. – Pirogue

@Mor Can you post the code of you gradle file – Disafforest

Let us continue this discussion in chat. – Disafforest

Answer 1

"Warning:Dependency Lib:unspecified on project app resolves to an APK archive which is not supported as a compilation dependency."

It happens when you are trying to add a dependency which is an APK.

Using:

apply plugin: 'com.android.application'

tells Gradle to build it as an application, generating an APK.

Using:

apply plugin: 'com.android.library'

it will build as a library, generating an AAR.

In your case, it seems that you are changing the plugin in the wrong place.
It seems to be your main module.

apply plugin: 'com.android.library'

dependencies {
    compile project(':DimenLib')
}

Move the apply plugin: 'com.android.library' in your DimenLib.

Alcaic

Answer 2

Use apply plugin: 'com.android.application' instead of apply plugin: 'com.android.library'

apply plugin: 'com.android.application' applies the Android plugin for Gradle to this build. This adds Android-specific build tasks to the top-level build tasks and makes the android {...} element available to specify Android-specific build options.

Have a look here

http://developer.android.com/tools/building/plugin-for-gradle.html

Venison

#27342958 – Venison

Answer 3

I had the same problem and that's what solved it:

1. importing the external project as explained here: https://www.youtube.com/watch?v=2D9lYuRECoI

2. In my project build.gradle file added compile project(':IMPORTED_PROJECT_NAME').

3. Only then changed in the imported project gradle file "apply plugin: com.android.application" to "apply plugin: com.android.library"and removed applicationId.

Pirogue