Develop Reference

Android Studio - Error Building - Android tasks have already been created

Getting the following error when building the project:
Error:(2, 0) Android tasks have already been created.
This happens when calling android.applicationVariants,
android.libraryVariants or android.testVariants.
Once these methods are called, it is not possible to
continue configuring the model.
Root build.gradle:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.1.0'
}
}
apply plugin: 'android'
android {
compileSdkVersion 'Google Inc.:Google APIs:19'
buildToolsVersion '19.1.0'
defaultConfig {
versionCode 5
versionName '5'
targetSdkVersion 19
minSdkVersion 10
applicationId 'tsp.movil'
}
}
dependencies {
compile 'com.google.android.gms:play-services:7.0.0'
compile 'com.android.support:support-v4:22.1.1'
}
App build.gradle:
android {
compileSdkVersion 'Google Inc.:Google APIs:19'
buildToolsVersion '19.1.0'
defaultConfig {
applicationId "tsp.movil"
minSdkVersion 10
targetSdkVersion 19
versionCode 5
versionName '5'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
productFlavors {
}
}
dependencies {
compile 'com.android.support:support-v4:19.1.0'
compile 'com.google.android.gms:play-services:+'
compile files('libs/zbar.jar')
}

Your Top Level build.gradle file should only have the configuration common for all modules of your project.
make the following changes :
Root build.gradle file should have only this piece of code
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.1.0'
}
}
allprojects{
repositories {
jcenter()
}
}

I've faced a similar issue, with the same error message. The issue in my case was that I've had created a module inside a package and then deleted it manually in (MacOS) Finder.
The problem was that I forgot to also remove the include ::myModule line from the settings.gradle file.

look on this:
How to define common android properties for all modules using gradle
the 3rd comment says Android tasks have already been created. This happens when calling android.applicationVariants, android.libraryVariants or android.testVariants. Once these methods are called, it is not possible to continue configuring the model.

android- Gradle: An issue occurred configuring root project android studio

I migrated from eclipse to android studio. I've create a new project and I want to run it on genymotion. When I press run icon, it begins to compile and give me this error :
Error:Gradle: A problem occurred configuring root project 'Khabar'.
> Could not resolve all dependencies for configuration ':classpath'.
> Could not resolve com.android.tools.build:gradle:1.1.0.
Required by:
:Khabardar:unspecified
> Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/1.1.0/gradle-1.1.0.pom'.
> d29vzk4ow07wi7.cloudfront.net
This is some parts of my build.gradle :
apply plugin: 'com.android.application'
android {
compileSdkVersion 20
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "example.ir.khabar"
minSdkVersion 8
targetSdkVersion 20
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
build.gradle in root :
apply plugin: 'com.android.application'
android {
compileSdkVersion 20
buildToolsVersion "20.0.0"
defaultConfig {
applicationId "example.ir.khabar"
minSdkVersion 8
targetSdkVersion 20
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:20.0.0'
compile files('libs/universal-image-loader-1.8.4-with-sources.jar')
}
Could you help me? my gradle version is gradle-2.2.1-all

For me, the solution was to add the http url for jcenter, instead of https:
buildscript {
repositories {
jcenter {
url "http://jcenter.bintray.com/"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:1.1.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}

In addition to Al's answer, I also had to put the url inside allprojects:
allprojects {
repositories {
jcenter {
url "http://jcenter.bintray.com/"
}
}
}

I was having the same issue on Ubuntu Mate 18.04. I was able to fix it by replacing ibm-java80-jdk & ibm-java80-jre with openjdk. Also, I did update my DNS to cloudflare DNS. But I don't think it had anything to do with the fix.

add google() in your gradle inside the repositories section will solve your problem..
buildscript {
repositories {
jcenter()
google()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.0'
}
}
allprojects {
repositories {
jcenter()
}
}

Android Studio cannot resolve 3rd party dependencies

With the newer versions of Android Studio it has been advertised that you can add compile statements to the build.gradle file for 3rd party libraries that are available on Maven Central and Android Studio should be able to automatically download the appropriate dependencies. However I haven't been able to get the Gradle Sync to successfully complete when I try to add one of these libraries. Here is the build.gradle file for the project
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.1"
defaultConfig {
applicationId "com.appsbysynapps.helloname"
minSdkVersion 14
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile 'com.larswerkman:HoloColorPicker:1.5'
}
Here is the build.gradle for the module
buildscript {
repositories {
jcenter()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.1.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
mavenCentral()
}
}
Here is the error given out by Gradle
Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugCompile'.
> Could not resolve com.larswerkman:HoloColorPicker:1.5.
Required by:
HelloName:app:unspecified
> org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V
> org.slf4j.spi.LocationAwareLogger.log(Lorg/slf4j/Marker;Ljava/lang/String;ILjava/lang/String;[Ljava/lang/Object;Ljava/lang/Throwable;)V
I've been having the same issue for any 3rd party library I've tried to add. This is also a brand new project created in Android Studio 1.1.0 and offline mode is disabled. Any ideas for what is going on?

Error:Artifact 'support-v4.jar (com.android.support:support-v4:21.0.3)' not found. Android studio 1.0.2

I did a new install of Android Studio 1.0.2. Getting the following error when opening my first existing android project:
Gradle 'MyApplication' project refresh failed
Error:Artifact 'support-v4.jar (com.android.support:support-v4:21.0.3)' not found.
Searched in the following locations: file:/C:/Users/Ntokozo/AppData/Local/Android/sdk/extras/android/m2repository/com/android/support/support-v4/21.0.3/support-v4-21.0.3.jar
And if I navigate to that searched location I found two jar files which are: support-v4-21.0.3-sources.jar and support-v4-21.0.3-javadoc.jar
Here is my build.gradle file:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
Gradle file under App folder:
apply plugin: 'com.android.application'
android {
compileSdkVersion 21
buildToolsVersion "21.1.2"
defaultConfig {
applicationId "com.example.ntokozo.myapplication"
minSdkVersion 15
targetSdkVersion 21
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:21.0.3'
compile 'com.android.support:support-v4:21.0.3'
}
Thank you in advance, please bare in mind in responses that I'm a novice and I might not know advanced features.

After re-installing windows OS and a new Android Studio setup the problem disappeared. I don't know what was the problem at first.

Gradle can't find library

I am trying to include Otto library in my project, but am getting this error:
> Could not resolve all dependencies for configuration ':maptest:_debugCompile'.
> Could not find com.squareup:otto:1.3.4.
I have tried cleaning project, running Tools -> android -> sync project with gradle files but that gives me the same error.
My build.gradle is the following:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.7.+'
}
}
apply plugin: 'android'
android {
compileSdkVersion 18
buildToolsVersion "18.0.1"
defaultConfig {
minSdkVersion 8
targetSdkVersion 19
versionCode 1
versionName "1.0"
}
buildTypes {
release {
runProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
}
}
}
dependencies {
compile 'com.android.support:appcompat-v7:19.0.1'
compile 'com.google.android.gms:play-services:4.1.32'
compile 'com.squareup:otto:1.3.4'
}

You should add maven central repository, so gradle know where so search for library.
repositories {
mavenCentral()
}

Did you import Otto library into Android Private Libraries? Try clean project this way: Project -> Clean...
You may check this out.