Add commons-io dependency to gradle project in Android Studio - gradle

Question

Very simple question - how to add commons-io dependency to gradle Android project?
I tried the following
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.5.+'
}
}
apply plugin: 'android'
dependencies {
compile files('libs/android-support-v4.jar')
compile group: 'commons-io', name: 'commons-io', version: '2.0.1'
}
but it does not work
The error is
Gradle: A problem occurred configuring project ':LearnIt'.
Failed to notify project evaluation listener.
Could not resolve all dependencies for configuration ':LearnIt:_DebugCompile'.
> Could not find commons-io:commons-io:2.0.1.
Required by:
learnit:LearnIt:unspecified

Answer 1

As of now (May 2014) if you use the default generated project it is actually amazingly simple (though difficult to find instructions!
Open the second level build.gradle, and add the following line to the dependencies {:
compile "commons-io:commons-io:+"
That will get the latest version of commons-io. My complete file looks like this:
apply plugin: 'android'
android {
compileSdkVersion 19
buildToolsVersion "19.0.0"
defaultConfig {
minSdkVersion 18
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile "commons-io:commons-io:+"
}

Answer 2

you need to declare a repository where you want to resolve the commons-io library from (e.g. MavenCentral):
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.5.+'
}
}
apply plugin: 'android'
repositories{
mavenCentral()
}
dependencies {
compile files('libs/android-support-v4.jar')
compile group: 'commons-io', name: 'commons-io', version: '2.0.1'
}

Answer 3

Use gradlePlease to get the dependency.
Add the following to your app/build.gradle file:
dependencies {
compile 'org.apache.commons:commons-io:1.3.2'
}
//UPDATED
implementation group: 'commons-io', name: 'commons-io', version: '2.6'

Answer 4

Update 2020 using gradle
// Home Page : https://commons.apache.org/
// IO - https://commons.apache.org/proper/commons-io/
implementation group: 'commons-io', name: 'commons-io', version: '2.7'
// String / Text
implementation group: 'org.apache.commons', name: 'commons-text', version: '1.8'