I am working on adding NDK builds to a module of a library I already have deployed in maven. In the past, I used the stable Android Gradle plugin v1.5, but do to needs with the NDK build I am trying to use the experimental plugin (I need to specify a shared library to link against). The NDK build is fine, my issue is with my Maven deploy script.
At the end of my module's build script I call
apply from: '../maven_push.gradle'
After all the maven configuration stuff I have the following tasks:
task androidJavadocs(type: Javadoc) {
source = android.sourceSets.main.java.sourceFiles
}
task androidJavadocsJar(type: Jar) {
classifier = 'javadoc'
//basename = artifact_id
from androidJavadocs.destinationDir
}
task androidSourcesJar(type: Jar) {
classifier = 'sources'
//basename = artifact_id
from android.sourceSets.main.java.sourceFiles
}
artifacts {
//archives packageReleaseJar
archives androidSourcesJar
archives androidJavadocsJar
}
When I try to compile the build script I receive the following error:
Error:Could not find property 'android' on task ':moduleName:androidJavadocs'.
What is odd is that in Android Studio, autocomplete does find android.sourceSets.main.java.sourceFiles if I start typing. I know the experimental plugin is, well, experimental and I am also aware its poorly documented. Google is unfortunately not giving us any good options when it comes to automated building in this matter but I am hoping maybe someone understands enough about gradle to help me with this one.
I have just started using Android Studio,
So forgive me if i am unable to explain the situation properly.
But i will try to update details as required.
In my gradle project i use JakeWarton DiskCache with nineoldandroids
Both as jar files added to the app/libs folder.
In addition there also a Library project from this location
https://android-arsenal.com/details/1/122
repositories {
maven {
url "https://jitpack.io"
}
}
dependencies {
compile 'com.github.flavienlaurent:datetimepicker:0f5d399995'
}
I use it by adding the repository and dependency as shown above.
When i try to run this project i get following error
Execution failed for task ':app:packageAllDebugClassesForMultiDex'.
java.util.zip.ZipException: duplicate entry: com/nineoldandroids/animation/Animator$AnimatorListener.class
I can understand that since my app has a copy of nineoldandroids.jar and the lib-project also needs it at compile time there is some kind of issue.
How can i fix this conflict?
The library com.github.flavienlaurent:datetimepicker:0f5d399995 is using the
nineoldandroids library as a maven dependency.
dependencies {
compile 'com.nineoldandroids:library:2.4.0'
//...
}
Check the original build.gradle file in github.
To solve your issue you have to:
remove the nineoldandroids.jar from your project
add the nineoldandroids library as maven dependency in your project
Use:
dependencies{
//
compile 'com.nineoldandroids:library:2.4.0'
}
I want to use different jar files debug and release build in my app.
How can i configure gradle to do that.
You can easily specify dependencies for each build type, in the form of <buildType>Compile, in your case:
dependencies {
//other dependencies
debugCompile files('libs/libA.jar')
releaseCompile files('libs/libB.jar')
}
For more informations refer to the documentation.
When I build the Amazon (Kindle) flavor of my Android app I run into this Runtime error:
Caused by: java.lang.RuntimeException: Stub!
at com.amazon.device.messaging.ADMMessageReceiver.<init>()
I need the local amazon-device-messaging.jar file to compile my app, however I do not need to include it during runtime as the amazon device will have the necessary classes and methods.
How do I update my Android Studio build.gradle file to do this?
I also ran into this issue. When adding the Amazon Device Messaging jar as a library, Android Studio automatically generated
dependencies {
compile files('libs/amazon-device-messaging-1.0.1.jar')
}
I just needed to switch that to
dependencies {
provided files('libs/amazon-device-messaging-1.0.1.jar')
}
That did the trick for me. I'd up-vote your answer, #Clu, but I don't have a high enough reputation.
To solve this I used the provided type of dependency.
Inside my project modules build.gradle file, right before my dependencies closure I included the following:
configurations {
provided
}
sourceSets {
main {
compileClasspath += configurations.provided
}
}
And then, within my dependencies closure I included the following:
dependencies {
provided files('libs/amazon-device-messaging-1.0.1.jar')
}
This ensured that the .jar was only used for compile time and not runtime. I'm quite new to Android Studio, and this took me a while to figure out; hopefully this will help you make the switch to Android Studio as well.
Add the ADM jar in the Maven local repository.
Command :
mvn install:install-file "-Dfile=amazon-device-messaging-1.0.1.jar" "-DgroupId=com.amazon.device.messaging" "-DartifactId=amazondevicemessaging" "-Dversion=1.0.1" "-Dpackaging=jar"
Include local maven repository as project dependency :
Add “mavenLocal()” in main Gradle build script:
allprojects {
repositories {
mavenCentral()
mavenLocal()
}
Link the Maven artifact in ADM project.
Add below line ADMWrapperLib Gradle script (::).
provided 'com.amazon.device.messaging:amazondevicemessaging:1.0.1'
how to export a executable jar in gradle, and this jar can run as it include reference libraries.
build.gradle
apply plugin: 'java'
manifest.mainAttributes("Main-Class" : "com.botwave.analysis.LogAnalyzer")
repositories {
mavenCentral()
}
dependencies {
compile (
'commons-codec:commons-codec:1.6',
'commons-logging:commons-logging:1.1.1',
'org.apache.httpcomponents:httpclient:4.2.1',
'org.apache.httpcomponents:httpclient:4.2.1',
'org.apache.httpcomponents:httpcore:4.2.1',
'org.apache.httpcomponents:httpmime:4.2.1',
'ch.qos.logback:logback-classic:1.0.6',
'ch.qos.logback:logback-core:1.0.6',
'org.slf4j:slf4j-api:1.6.0',
'junit:junit:4.+'
)
}
after i run : gradle build
it create the build folder, and i run the jar in build/libs/XXX.jar:
java -jar build/libs/XXX.jar
here is a execution says :
Exception in thread "main" java.lang.NoClassDefFoundError: ch/qos/logback/core/joran/spi/JoranException
how can i run it with the reference libraries?
You can achieve it with Gradle application plugin
Hopefully this helps someone (as I unfortunately spent quite some time trying to find the solution). Here's the solution that worked for me for creating an executable JAR. I'm embedding Jetty in the main method, Jetty 9 to be specific and using Gradle 2.1.
Include the following code into your build.gradle file (if a subproject is the "main" project that the jar needs to be built from, then add it to the subproject which should start like this project(':') { insert the code somewhere here, after dependencies.}.
Also, you need to add the plugin java for this to work: apply plugin: 'java' .
My jar task looks as follows:
apply plugin: 'java'
jar {
archiveName = "yourjar.jar"
from {
configurations.runtime.collect {
it.isDirectory() ? it : zipTree(it)
}
configurations.compile.collect {
it.isDirectory() ? it : zipTree(it)
}
}
manifest {
attributes 'Main-Class': 'your.package.name.Mainclassname'
}
exclude 'META-INF/*.RSA', 'META-INF/*.SF','META-INF/*.DSA'
}
And then you can execute your yourjar.jar via the commandline:
java -jar yourjar.jar
The META-INF/.RSA, META-INF/.SF and META-INF/*.DSA have to be excluded for it to work. Otherwise a SecurityException gets thrown.
The problem seems to lie with embedded Jetty, as Jetty moved to Eclipse and now is signing their JARs, which I read becomes problematic when other, unsigned JARs want to load the signed ones. Please feel free to educate me if I am wrong in this, that's just what I read.
The JARs that the project depends on are defined in the dependencies as follows:
dependencies {
// add the subprojects / modules that this depends on
compile project(':subproject-1')
compile project(':subproject-2')
compile group: 'org.eclipse.jetty', name: 'jetty-server', version: '9.2.6.v20141205'
compile group: 'org.eclipse.jetty', name: 'jetty-servlet', version: '9.2.6.v20141205'
compile group: 'org.eclipse.jetty', name: 'jetty-http', version: '9.2.6.v20141205'
}
EDIT: Before, instead of just
configurations.runtime.collect{...}
i had
configurations.runtime.asFileTree.files.collect{...}
This caused strange behaviour in a larger project in clean build. When running the jar after executing gradle clean build for the first time (after manually cleaning the build directory), it would throw a NoClassDefFoundException (in our project with many subprojects), but running the jar after executing gradle clean build a second time (without emptying the build directory manually), for some reason it had all dependencies. This didn't happen if asFileTree.files was left out.
Also I should note, all compile dependencies are included in runtime, however not all runtime are included in compile. So if you are just using compile
configurations.compile.collect {
it.isDirectory() ? it : zipTree(it)
}
Then be sure to remember that if there is a NoClassDefFoundException thrown, some class isn't found at runtime, which means you should also include this:
configurations.runtime.collect {
it.isDirectory() ? it : zipTree(it)
}
Quick answer
Add the following to your build.gradle:
apply plugin: 'application'
mainClassName = 'org.example.app.MainClass'
jar {
manifest {
attributes 'Main-Class': mainClassName,
'Class-Path': configurations.runtime.files.collect {"$it.name"}.join(' ')
}
}
From the project directory, run gradle installDist
Run java -jar build/install/<appname>/lib/<appname>.jar
I recommend adding the app version to your build.gradle as well, but it's not required. If you do, the built jar name will be <appname>-<version>.jar.
Note: I'm using gradle 2.5
Details
In order to create a self contained executable jar that you can simply run with:
java -jar appname.jar
you will need:
your jar to include a MANIFEST file pointing to your application main class
all your dependencies (classes from jars outside of your application) to be included or accessible somehow
your MANIFEST file to include the correct classpath
As some other answers point out, you can use some third-party plugin to achieve this, such as shadow or one-jar.
I tried shadow, but didn't like the fact that all my dependencies and their resources were dumped flat out into the built jar together with my application code. I also prefer to minimize the use of external plugins.
Another option would be to use the gradle application plugin as #erdi answered above. Running gradle build will build a jar for you and nicely bundle it with all your dependencies in a zip/tar file. You can also just run gradle installDist to skip zipping.
However, as #jeremyjjbrown wrote in a comment there, the plugin does not create an executable jar per se. It creates a jar and a script which constructs the classpath and executes a command to run the main class of your app. You will not be able to run java -jar appname.jar.
To get the best of both worlds, follow the steps above which create your jar together with all your dependencies as separate jars and add the correct values to your MANIEST.
All of these answers are either wrong or out of date.
The OP is asking for what is known as a "fat jar". That is an exectuable jar which contains all the dependencies so that it requires no outside dependencies in order to run (except for a JRE of course!).
The answer at the time of writing is the Gradle Shadow Jar plugin, explained pretty clearly at Shadow Plugin User Guide & Examples.
I struggled a bit. But this works:
put all these lines somewhere in your build.gradle file (I put them near the top) :
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.github.jengelman.gradle.plugins:shadow:1.2.4'
}
}
apply plugin: 'com.github.johnrengelman.shadow'
shadowJar {
baseName = 'shadow'
classifier = null
version = null
}
jar {
manifest {
attributes 'Class-Path': '/libs/a.jar'
attributes 'Main-Class': 'core.MyClassContainingMainMethod'
}
}
PS don't worry about any other "repositories", "dependency" or "plugin" lines elsewhere in your build file, and do leave the lines thus inside this "buildscript" block (I haven't a clue why you need to do that).
PPS the Shadow Plugin User Guide & Examples is well-written but doesn't tell you
to include the line
attributes 'Main-Class': 'core.MyClassContainingMainMethod'
where I've put it above. Perhaps because the author assumes you are less clueless than I am, and you probably are. I haven't a clue why we are told to put a strange "Class-Path" attribute like that in, but if it ain't broke don't fix it.
When you then go
> gradle shadowjar
Gradle will hopefully build a fat executable jar under /build/libs (default name "shadow.jar") which you can run by doing this:
> java -jar shadow.jar
I checked quite some links for the solution, finally did the below mentioned steps to get it working. I am using Gradle 2.9.
Make the following changes in your build,gradle file :
1. Mention plugin:
apply plugin: 'eu.appsatori.fatjar'
2. Provide the Buildscript:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath "eu.appsatori:gradle-fatjar-plugin:0.3"
}
}
3. Provide the Main Class:
fatJar {
classifier 'fat'
manifest {
attributes 'Main-Class': 'my.project.core.MyMainClass'
}
exclude 'META-INF/*.DSA', 'META-INF/*.RSA', 'META-INF/*.SF'
}
4. Create the fatjar:
./gradlew clean fatjar
5. Run the fatjar from /build/libs/ :
java -jar MyFatJar.jar