Gradle error: "Attribute "rippleColor" has already been defined" in android studio

Question

So I was trying out the material design support library and when I added the dependency, compiled, and I got this error. I looked at similar problems and tried their solutions but it would not get fixed so I hope you can help me.

Here's my logcat:

C:\Users\Jan\AndroidStudioProjects\SwagCalculator3\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\22.2.0\res\values\values.xml
Error:(1) Attribute "rippleColor" has already been defined

and here is my build.gradle:

apply plugin: 'com.android.application'

android {
compileSdkVersion 22
buildToolsVersion "22.0.1"

defaultConfig {
    applicationId "com.raptor.swagcalculator.swagcalculator"
    minSdkVersion 21
    targetSdkVersion 22

}
buildTypes {
    release {
        minifyEnabled false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:design:22.2.0'
compile 'com.android.support:appcompat-v7:22.2.0'
compile 'com.android.support:support-v4:22.2.0'
compile 'com.android.support:cardview-v7:22.2.0'
}

Answer 1

I found the solution here (https://github.com/navasmdc/MaterialDesignLibrary/issues/289 ). The MaterialDesign Library's rippleColor attritube is replaced with mRippleColor attribute and the compiled library is forked here (https://github.com/vajro/MaterialDesignLibrary).

Adding

repositories {
maven { url "https://jitpack.io" }

}

and replacing

compile 'com.github.navasmdc:MaterialDesign:1.5@aar'

with

compile 'com.github.vajro:MaterialDesignLibrary:1.6'

in your build.gradle file should solve the issue.

Answer 2

I have same issue , after long search I found there are some libraries use the same attribute rippleColor

Example:

1- Google play service

compile 'com.google.android.gms:play-services:7.8.0'

2- Design Support Library

compile 'com.android.support:design:22.2.0'

3- MaterialDesign

compile 'com.github.navasmdc:MaterialDesign:1.5@aar'

Fix this issue

First to fix this issue replace google play service package (whole package) with specific one you need , please review google site as in Google Wallet there attribute called rippleColor , in my case all I need google maps com.google.android.gms:play-services-maps:7.8.0

Second you can replace Design Support Library compile com.github.navasmdc:MaterialDesign:1.5@aar with compile 'it.neokree:MaterialNavigationDrawer:1.3.2' , if you need to use navigation drawer only

I hope this help

Answer 3

It seems that in the projects you are using (your own application + the used libraries) the Attribute named rippleColor is used at least two times.

I'd suggest to check through your xml-s containing colors or any attributes (e.g colors.xml, or any other, try search for it in the whole project in your IDE).

Check whether the mentioned rippleColor is used multiple times. If you have it in your project, rename it!