I have a fresh install of IntelliJ, I created a new kotlin gradle project using the following settings:
This produces the following build.gradle.kts, (the exact same file works on my Windows machine):
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
kotlin("jvm") version "1.2.71"
}
group = "com.test"
version = "1.0-SNAPSHOT"
repositories {
mavenCentral()
}
dependencies {
compile(kotlin("stdlib-jdk8"))
}
tasks.withType<KotlinCompile> {
kotlinOptions.jvmTarget = "1.8"
}
Which produces this error, when trying to do a gradle refresh:
Plugin [id: 'org.jetbrains.kotlin.jvm', version: '1.2.71'] was not
found in any of the following sources:
Gradle Core Plugins (plugin is not in 'org.gradle' namespace)
Plugin Repositories (could not resolve plugin artifact 'org.jetbrains.kotlin.jvm:org.jetbrains.kotlin.jvm.gradle.plugin:1.2.71')
Searched in the following repositories:
Gradle Central Plugin Repository
Check your Internet connection and make sure your Internet is not restricted.
I solved this problem by turning on proxy for all tunnels (not just HTTP) with a VPN app.
import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
plugins {
// kotlin("jvm") version "1.2.71"
}
group = "com.test"
version = "1.0-SNAPSHOT"
repositories {
mavenCentral()
}
dependencies {
compile(kotlin("stdlib-jdk8"))
}
//tasks.withType<KotlinCompile> {
// kotlinOptions.jvmTarget = "1.8"
//}
gradle sync by commenting the above lines. The gradle will be set up.
once the gradle is downloaded, uncomment those line and sync again.
if the dependencies are not downloaded properly, run 'gradle build' in the terminal and click on gradle sync.
This solved the issue for me.
(1) in my case (OpenJDK 11 on Ubuntu 18.04) the problem was Gradle not being able to download the POM file from gradle plugin-server. you can test it by entering this line into jshell:
new java.net.URL("https://plugins.gradle.org/m2/org/jetbrains/kotlin/jvm/org.jetbrains.kotlin.jvm.gradle.plugin/1.3.11/org.jetbrains.kotlin.jvm.gradle.plugin-1.3.11.pom").openStream()
(you can find your url by running gradle with --debug option)
So if you received an exception like this: InvalidAlgorithmParameterException: trustAnchors parameter must be non-empty then the trouble is CA-certs cache. which could be easily fixed by writing these lines into bash Ref:
sudo su
/usr/bin/printf '\xfe\xed\xfe\xed\x00\x00\x00\x02\x00\x00\x00\x00\xe2\x68\x6e\x45\xfb\x43\xdf\xa4\xd9\x92\xdd\x41\xce\xb6\xb2\x1c\x63\x30\xd7\x92' > /etc/ssl/certs/java/cacerts
/var/lib/dpkg/info/ca-certificates-java.postinst configure
By the way do not forget to restart gradle daemon before trying again. (gradle --stop)
(2) another reason could be your internet not having access to bintray.com (the internet of Iran or China) which you can test by putting this line on jshell :
new java.net.URL("https://jcenter.bintray.com/org/jetbrains/kotlin/kotlin-gradle-plugin-api/1.3.11/kotlin-gradle-plugin-api-1.3.11.pom").openStream()
If you received a connection timeout, it confirms this theory. In this case you need to buy and have proxy/vpn connected in order to be able to download these dependencies.
Check your gradle and kotlin (or Java) versions.
I got the same error and my issue is solved by specifying the kotlin version in build.gradle:
Before:
plugins {
id 'org.jetbrains.kotlin.jvm'
}
After:
plugins {
id 'org.jetbrains.kotlin.jvm' version "1.4.10"
}
In my case (Ubuntu 20.04), problem was with gradle 7.2, installed from snap.
I have removed gradle 7.2, installed from snap and install gradle 7.2 from sdkman. Works fine for me.
If you are using java like me .I got the issue fixed by adding the following:
Root gradle
dependencies {
ext.kotlin_version = '1.4.10'
classpath "com.android.tools.build:gradle:7.0.4"
classpath "com.google.dagger:hilt-android-gradle-plugin:2.38.1"
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
......
}
App gradle file
plugins {
id 'com.android.application'
id 'kotlin-android'
id 'kotlin-kapt'
id 'dagger.hilt.android.plugin'
}
dependencies {
implementation "com.google.dagger:hilt-android:2.38.1"
kapt "com.google.dagger:hilt-compiler:2.38.1"
......
}
Ok, so the answer was very simple all along. For some reason I activated gradle's "Offline work" toggle and that was the cause of the problem.
To disable it simply go to Settings > Build, Execution, Deployment > Build Tools > Gradle and deselect the "Offline work" checkbox.
In my case the problem was because Charles Proxy. After closing Charles I could start working again
I updated my Kotlin version to 1.7.20 and fixed this problem.
id 'org.jetbrains.kotlin.android' version '1.7.20' apply false
I recently had similar issue with an empty project autogenerated by Intellij Idea.
Solved this problem by combining Java and Gradle versions.
Initially I had Oracle Java 8 with Gradle 6.8.3.
After several attempts I found a working combination - AdoptOpenJDK 11 and Gradle 5.6.4
In my case I changes the Gradle JVM in Settings > Build, Execution, Deployment > Build Tools > Gradle and it worked.
Disconnect from your VPN (or make sure you have an open internet connection), then restart Android Studio.
If you don't restart it sometimes it continues with invalid proxy properties.
This for Ktor devs. If you are working on a ktor application with the web project generator there is a chance the generator sets invalid jvm plugin version. So make sure you are setting correct version for jvm plugin. You can find the latest jvm plugin version here. Here is the sample build.gradle.kts file.
//Plugin section
plugins {
kotlin("jvm") version "1.8.0"
id("io.ktor.plugin") version "2.2.2"
}
//Dependancy section
dependencies {
...
testImplementation("io.ktor:ktor-server-tests-jvm:1.8.0")
testImplementation("org.jetbrains.kotlin:kotlin-test-junit:1.8.0")
...
}
Deploying one of my example JavaFX applications to an Android device via the gluon-mobile Eclipse plugin fails with an IllegalArgumentException in the retrolambda plugin. This is caused by an indirect dependency of my project on jaxb-api-2.3.0.jar which is a multi-release jar. Retrolambda obviously cannot handle the Java 9 parts in this file and instead of just ignoring them throws an exception. How can this be fixed or avoided?
A newer version of retrolambda (2.5.3 instead of 2.5.1) can handle the module-info.class already but not the part in the META-INF/versions/9/...
The problem could be cured by just deleting the META-INF stuff but when I do that manually it is always re-created by the gluon plugin.
Update 1:
Adding
packagingOptions {
exclude '/META-INF/versions/9/javax/xml/bind/ModuleUtil.class'
}
to the android section in the build file does not make any difference. The error message is still the same:
java.lang.IllegalArgumentException
at net.orfjackal.retrolambda.asm.ClassReader.<init>(ClassReader.java:185)
at net.orfjackal.retrolambda.asm.ClassReader.<init>(ClassReader.java:168)
at net.orfjackal.retrolambda.ClassAnalyzer.analyze(ClassAnalyzer.java:25)
at net.orfjackal.retrolambda.Retrolambda$1.visitClass(Retrolambda.java:71)
at net.orfjackal.retrolambda.files.ClasspathVisitor.visitFile(ClasspathVisitor.java:29)
at net.orfjackal.retrolambda.files.ClasspathVisitor.visitFile(ClasspathVisitor.java:11)
at java.nio.file.Files.walkFileTree(Files.java:2670)
at java.nio.file.Files.walkFileTree(Files.java:2742)
at net.orfjackal.retrolambda.Retrolambda.visitFiles(Retrolambda.java:107)
at net.orfjackal.retrolambda.Retrolambda.run(Retrolambda.java:68)
at net.orfjackal.retrolambda.Main.main(Main.java:28)
This can also be verified easily by just running the command line version of retrlambda over the extracted classes of jaxb-api-2.3.0.jar
Update 2:
With Java 9 and the Gluon-VM it fails with:
Execution failed for task ':SingleViewProject - Gluon VMApp:apkDebug'.
> Duplicate files at the same path inside the APK: META-INF/LICENSE.txt
File 1: /Users/mpaus/.m2/repository/org/apache/commons/commons-math3/3.6.1/commons-math3-3.6.1.jar
File 2: /Users/mpaus/.m2/repository/javax/xml/bind/jaxb-api/2.3.0/jaxb-api-2.3.0.jar
jaxb-api-2.3.0.jar is a multi-release jar and the current jfxmobile plugin 1.3.10 can't deal with it.
The plugin, that targets Java 7/8, uses retrolambda to port back to Java 6/7 a given dependency.
Even if you try to remove the module-info.class or the 9 versionMETA-INF.versions.9.javax.xml.bind`, these classes are processed by the retrolambda plugin, and this will lead to the exception posted in the question. Using the latest retrolambda version doesn't help either.
android {
retrolambdaVersion = "2.5.3"
manifest = 'src/android/AndroidManifest.xml'
packagingOptions {
exclude '/module-info.class'
exclude '/META-INF.versions.9.javax.xml.bind/ModuleUtil.class'
}
}
The only way to make it work under Java 8/jfxmobile 1.3.10 is by modifying the plugin, to add the following exception to JFXMobilePlugin:
copyClassesForRetrolambda.include '**/*.class'
copyClassesForRetrolambda.includeEmptyDirs = false
// exception for multi-release jars
copyClassesForRetrolambda.exclude 'META-INF/versions/**/*.class'
copyClassesForRetrolambda.exclude 'module-info.class'
and then build the plugin and use a local snapshot.
The good news is that using the jfxmobile plugin version 2.0.20 and Gluon VM, that targets Java 9+, the above is already included.
If you can switch to Java 9/10, modify your project to use this plugin, create a new project with the Gluon IDE plugin ('single view project with Gluon VM'), or follow this sample, but using the latest version (2.0.20 so far).
buildscript {
repositories {
jcenter()
google()
maven {
url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
}
}
dependencies {
classpath 'org.javafxports:jfxmobile-plugin:2.0.20'
}
}
apply plugin: 'org.javafxports.jfxmobile'
repositories {
jcenter()
maven {
url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
}
}
mainClassName = '...'
sourceCompatibility = 1.8
targetCompatibility = 1.8
dependencies {
compile 'com.gluonhq:charm:5.0.0-jdk9'
androidRuntime 'com.gluonhq:charm:5.0.0'
compile 'javax.xml.bind:jaxb-api:2.3.0'
}
How do I fix a Gradle sync error in Android Studio (latest version 2.3)?
This error occurs when the gradle version is not compatible. Please update your gradle version in project level build.gradle to 2.3.
buildscript {
...
dependencies {
classpath 'com.android.tools.build:gradle:2.3.0'
}
}
I have just updated Android Studio to 0.4.2, and the first time I launched it I got an error saying:
Failed to refresh Gradle project 'MyProject'
Gradle version 1.8 is required. Current version is 1.9. If using the gradle wrapper, try editing the distributionUrl in /home/alex/gradle/wrapper/gradle-wrapper.properties to gradle-1.8-all.zip.
Please fix the project's Gradle settings.
The fun fact no. 1 is that the specified path doesn't exist - anyway, I have changed the distributionUrl in gradle-wrapper.properties in my project to 1.8, and relaunching Studio now asks for 1.9!
Any ideas on how I can fix this?
SOLUTION
Solved this by deleting the gradle folder. It downloaded the libs and solved the dependencies on its own.
Android Studio version 0.4.2 wont work with Gradle 1.8 you have to use gradle 1.9
Check following things :
1.inside every build.gradle file in your project the gradle dependency should look like.
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:0.7.+'
}
}
2.If you are using Local Distribution change the path from File>Settings>Compiler>Gradle and point it to gradle 1.9.
Change the path in gradle-wrapper.properties to
distributionUrl=http\://services.gradle.org/distributions/gradle-1.9-bin.zip
I am trying to create a build script using gradle to build a android project and using plugins from eclipse and android but it doesnt seem to work and failes with the following error when I run gradle eclipse:
* What went wrong:
A problem occurred evaluating root project 'RssUnified'.
Cause: Could not find method apply() for arguments [{plugin=eclipse}] on root project 'RssUnified'.
Here is my build script:
//apply eclipse plugin
apply plugin: 'eclipse'
//apply android plugin
apply plugin: 'android'
task hello << {
String value = 'wagwan'
println 'Hello world!' + value.toUpperCase()
}
//setup external dependancy plugins we will use to build a android application
repositories {
mavenCentral()
}
dependencies {
classpath 'org.gradle.api.plugins:gradle-android-plugin:1.2.1'
}
Gradle exception thrown below:
Exception in thread "main" java.lang.NoClassDefFoundError: org/gradle/BootstrapMain
Caused by: java.lang.ClassNotFoundException: org.gradle.BootstrapMain
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.gradle.BootstrapMain. Program will exit.
I downloaded full gradle version from this link: http://www.gradle.org/downloads
Version 0.8 did not support the apply syntax for plugins yet. Starting with version 0.9 the apply method was introduced. A similar issue is described in this post.
Version 0.8 is pretty old. I'd highly recommend upgrading to the latest version of Gradle. That should definitely fix your problem.