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I have an issue with running my JavaFX/Gluon Mobile App on iPadOS 13.3 Actually the similar issue is described here: Gluon sample application failing on ios devices I've identify that the problem is caused by RoboVM and should be fixed in the version 2.3.10-SNAPSHOT

How can I change the version of RoboVM used by Gluon? In the Gluon documentation is mentioned the ios gradle extension property robovmVersion. This property can be set to the version robovmVersion ='2.3.5-ios12' but not 2.3.10. The reason is that on the bintray there is no version 2.3.10.

Is there any way to force Gluon Mobile to use RoboVM 2.3.10?

Jan Švanda
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  • You can try to modify and build locally the jfxmobile plugin, by changing the [2.3.5-ios12](https://bitbucket.org/javafxports/javafxmobile-plugin/src/db6e767a8d428af8dfaf8b9096aad5b4dc3b2d91/build.gradle?at=default#build.gradle-26) dependency. Based on the [`robovmVersion`](https://bitbucket.org/javafxports/javafxmobile-plugin/src/db6e767a8d428af8dfaf8b9096aad5b4dc3b2d91/src/main/groovy/org/javafxports/jfxmobile/plugin/ios/IosExtension.groovy?at=default#lines-20), you will have to change the dependencies in JFXMobilePlugin. – José Pereda Jan 21 '20 at 21:11
  • I have been playing with that the last days. You can download a sample from https://bitbucket.org/javasuns/files/downloads/JavaFXRoboVM.tar.gz – javasuns Jan 23 '20 at 11:23

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This is a temporary solution until the JavaFXPorts repository gets updated. There seems to be an issue with iOS 13.3 and JavaFX native libraries that's why apps crash even when using the latest 2.3.10-SNAPSHOT.

The breaking line of code was identified yesterday by Demyan Kimitsa who suggested to remove assert from the following native class

GlassApplication.m:635

assert(pthread_key_create(&GlassThreadDataKey, NULL) == 0);

becomes

thread_key_create(&GlassThreadDataKey, NULL) == 0;

I have created a build with the above change in native libraries and with the use of RoboVM 2.3.10-SNAPSHOT everything runs normal again even in the latest iOS.

Now that the issue is identified, I believe it is a matter of time until a new JavaFXPorts fix is published.

If you can't wait, you can download the HelloWorld sample with the new binaries from here. Adjust the parameters in build.gradle and you are ready to go.

javasuns
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  • Great finding! For complete reference, the `GlassApplication.m` file is located at the [JavaFXPorts repository](https://bitbucket.org/javafxports/8u-dev-rt/src/tip/modules/graphics/src/main/native-glass/ios/GlassApplication.m#lines-635). And if you remove the `assert`, you can also remove `== 0`. – José Pereda Feb 02 '20 at 17:22
  • @JoséPereda probably you should check other places of assets to be sure that no initializations happen inside as I didn't check entire sources. Also it would be nice to store result of pthread_key_create invocation to local var and keep assert around this var. – dkimitsa Feb 03 '20 at 10:07