Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior

Question

I am getting the following error while building the project. haven\'t used CoordinatorLayout in this project. just added as a dependency in build.gradle :

I am usin

Answer 1

I faced the same problem, I added android support design dependencies to the app level build.gradle

Add following:

implementation 'com.android.support:design:27.1.0'

in build.gradle. Now its working for me.

Answer 2

I also faced same problem. But then I realised that the versions I am using of support libraries was not same.

Once I made it same, the error gone.

In your case

implementation 'com.android.support:appcompat-v7:27.1.0'
implementation 'com.android.support:design:27.0.2'

are not same, so you just downgraded appcompat to

implementation 'com.android.support:appcompat-v7:27.0.2'

hence, your problem solved.

But you could also have solved if you could have upgraded support design version to

implementation 'com.android.support:design:27.1.0'

Answer 3

Adding this to project's gradle.properties fixed it for us:

android.enableJetifier=true
android.useAndroidX=true

Answer 4

Changed all dependencies to compile rather than implementation, then I rebuild the project without errors. Then I switched back to implementation rather than leaving it as compile.

Answer 5

The solution for this is that remove this following dependency:

implementation 'com.android.support:design:26.1.0'

put general dependencies as:

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    //noinspection GradleCompatible
    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support:support-compat:26.1.0'
    implementation 'com.android.support:multidex:1.0.3'    
    implementation 'com.android.support:support-v4:26.1.0'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.facebook.android:audience-network-sdk:4.99.1'
}

Answer 6

Your build script should match with application build.gradle dependencies.

ext {
        buildToolsVersion = "27.0.3"
        minSdkVersion = 16
        compileSdkVersion = 27
        targetSdkVersion = 26
        supportLibVersion = "27.1.1"
    }


dependencies {
    .................
    ...................

    implementation 'com.android.support:support-v4:27.1.0'
    implementation 'com.android.support:design:27.1.0'
    ................
    ...........
}

if you want to downgrade dependencies then also downgrade supportLibVersion and buildToolsVersion .