Build failure for JavaFX android app using the glu

Question

I just started a new gluon mobile multi view project with FXML and tried to run it before changing anything (apart from updating the jfxmobile-plugin version in the build.gradle file from 1.2.0 to 1.3.2). it works fine on desktop, but when i try to run the androidinstall gradle task (with my android phone connected) it fails. It gives me the following error:

:mergeClassesIntoJar
:shrinkMultiDexComponents
:createMainDexList
:writeInputListFile
[ant:java] Java Result: 1
:dex FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':dex'.
> org.gradle.api.GradleException (no error message)

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

my build.gradle file:

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'org.javafxports:jfxmobile-plugin:1.3.2'
    }
}

apply plugin: 'org.javafxports.jfxmobile'

repositories {
    jcenter()
    maven {
        url 'http://nexus.gluonhq.com/nexus/content/repositories/releases'
    }
}

mainClassName = 'com.gluonapplication.GluonApplication'

dependencies {
    compile 'com.gluonhq:charm:4.2.0'
}

jfxmobile {
    downConfig {
        version = '3.1.0'
        // Do not edit the line below. Use Gluon Mobile Settings in your project context menu instead
        plugins 'display', 'lifecycle', 'statusbar', 'storage'
    }
    android {
        manifest = 'src/android/AndroidManifest.xml'
    }
}

operating system: Windows 10.

Please let me know if any additional information is needed to determine the cause of the problem. Thank you.

gradlew --info android log:

http://pastebin.com/yNZbZcVk

Answer 1

Based on your log, I noticed you were using a 32 bits JDK on a 64 bits OS:

Starting process 'command 'C:\Program Files (x86)\Java\jdk1.8.0_101\bin\java.exe''. Working directory: D:\Android_Projects\GluonMobile-MultiViewProjectwithFXML Command: C:\Program Files (x86)\Java\jdk1.8.0_101\bin\java.exe ...

By default, the jfxmobile plugin sets 2 GB for the JVM Xmx option on Android, and considering that on a 32 bits OS that won't be possible to allocate, the solution is setting a lower value.

Based on this line of code, you can set:

android { 
     dexOptions { 
          javaMaxHeapSize '1g' 
     }
}

Or maybe a little bit more (1.5g or so?).

Note that this will be solved if you use a 64 bits JDK. Make sure you update your JAVA_HOME environment variable accordingly, as you won't need to reduce the memory for your process.