Maven Dependencies with Android Studio / Gradle

Question

I am using the Gradle build system bundled with Android Studio. So far, I am able to build multi-project setups using dependencies that are stored in my project structure. I would now like to use a maven dependency, to no avail. I have written a very simple build.gradle file that always fails :

    buildscript {         repositories {             maven { url 'http://repo1.maven.org/maven2' }         }         dependencies {             classpath 'com.android.tools.build:gradle:0.4'         }     }     apply plugin: 'android'      dependencies {         compile 'com.google.android:support-v4:r7'     }      android {         compileSdkVersion 17         buildToolsVersion "17.0.0"          defaultConfig {             minSdkVersion 7             targetSdkVersion 16         }     } 

with the following message :

    * What went wrong:         A problem occurred configuring project ':absabs'.         > Failed to notify project evaluation listener.            > Could not resolve all dependencies for configuration ':absabs:compile'.               > Could not find com.google.android:support-v4:r7.                 Required by:                     absabs:absabs:unspecified .... Caused by: org.gradle.api.internal.artifacts.ivyservice.ModuleVersionNotFoundException: Could not find com.google.android:support-v4:r7. 

It happens with any artifact I have tried so far. Any idea of what's wrong ?

Thanks

Answer 1

The "repositories" block in the buildscript section only applies to the build environment. You also need to specify which repository to use when resolving dependencies for building your project, so you need to put something like the following in your build.gradle file:

repositories {     mavenCentral() } 

Your complete file would look something like this:

buildscript {     repositories {         maven { url 'http://repo1.maven.org/maven2' }     }     dependencies {         classpath 'com.android.tools.build:gradle:0.4'     } } apply plugin: 'android'  repositories {     mavenCentral() }  dependencies {     compile 'com.google.android:support-v4:r7' }  android {     compileSdkVersion 17     buildToolsVersion "17.0.0"      defaultConfig {         minSdkVersion 7         targetSdkVersion 16     } } 

Note the two instances of "repositories". You can read more about what this actually means in the gradle docs.