jenetics/jpx

FATAL EXCEPTION in Android

Closed this issue · 6 comments

55juekun commented

When I try to save the gpx file by directly depending on "io.jenetics:jpx:3.0.1" through Gradle and calling theGPX.write(gpx, path)method, an FATAL EXCEPTION is prompted. After troubleshooting, it is found that this dependency exists in both Android33 and jdk17. here is the exception stack trace is:

FATAL EXCEPTION: DefaultDispatcher-worker-3
         Process: com.example.heystestdemo, PID: 20783
         javax.xml.stream.FactoryConfigurationError: Provider com.bea.xml.stream.XMLOutputFactoryBase not found
          at javax.xml.stream.FactoryFinder.newInstance(FactoryFinder.java:72)
          at javax.xml.stream.FactoryFinder.find(FactoryFinder.java:176)
          at javax.xml.stream.FactoryFinder.find(FactoryFinder.java:92)
          at javax.xml.stream.XMLOutputFactory.newInstance(XMLOutputFactory.java:98)
          at io.jenetics.jpx.XMLProvider.xmlOutputFactory(XMLProvider.java:64)
          at io.jenetics.jpx.GPX$Writer.write(GPX.java:1487)
          at io.jenetics.jpx.GPX$Writer.write(GPX.java:1526)
          at io.jenetics.jpx.GPX$Writer.write(GPX.java:1542)
          at io.jenetics.jpx.GPX.write(GPX.java:2075)
55juekun commented

the javax.xml.stream.XMLInputFactory and javax.xml.stream.XMLOutputFactory exists in both Android33 and jdk17

jenetics commented

The exception says, that the class com.bea.xml.stream.XMLOutputFactoryBase is missing.

55juekun commented

The following statements are some of my speculations about this issue:
Since the classloader does not load other classes with the same name when it discovers that a certain class already exists, and in the Android system, the class loader gives priority to loading classes related to the Android API. Therefore, the classes with the same name in JDK are skipped. In this case, the XMLOutputFactory class in the javax.xml.stream package of the Android API is loaded first, thereby missing the other classes we need in the JDK package.but this causes us to miss other classes we need from the JDK package. Thus, during the subsequent loading process of packages with the same name, the class loader is unable to load XMLOutputFactoryBase, and as a result, it throws the missing message.

I want to use your library in my Android application, but it seems not to work properly, so I've raised this issue in the hope of getting some assistance.

jenetics commented

There are two related tickets with Android. Have you checked theses?

55juekun commented

When I updated my dependencies according to the solution of issues 76, it seems to work well.

    implementation("io.jenetics:jpx:2.2.0")
    implementation("stax:stax-api:1.0.1")
    implementation("com.fasterxml:aalto-xml:1.3.0")

But another problem arose when I updated your library to the latest version(io.jenetics:jpx:3.0.1).

FATAL EXCEPTION: DefaultDispatcher-worker-1
                              Process: com.example.heystestdemo, PID: 10108
                               java.lang.IllegalAccessError: Method 'void io.jenetics.jpx.XMLWriter.lambda$map$0(java.util.function.Function, javax.xml.stream.XMLStreamWriter, java.lang.Object)' is inaccessible to class 'io.jenetics.jpx.XMLWriter$$ExternalSyntheticLambda2'
                                    at io.jenetics.jpx.XMLWriter$$ExternalSyntheticLambda2.write(Unknown Source:4)
                                    at io.jenetics.jpx.XMLWriter.lambda$elem$4(XMLWriter.java:164)
                                    at io.jenetics.jpx.XMLWriter$$ExternalSyntheticLambda5.write(Unknown Source:4)
                                    at io.jenetics.jpx.GPX$Writer.write(GPX.java:1502)
                                    at io.jenetics.jpx.GPX$Writer.write(GPX.java:1526)
                                    at io.jenetics.jpx.GPX$Writer.write(GPX.java:1542)
                                    at io.jenetics.jpx.GPX.write(GPX.java:2075)

But anyway, the problem seems to be solved, thanks a lot for your help.

moiatto commented

I tried all possible versions, including this last one:

implementation("io.jenetics:jpx:3.1.0")
implementation("stax:stax-api:1.0.1")
implementation("com.fasterxml:aalto-xml:1.3.1")

These are my project settings:

Android Gradle Plugin version 8.3.2
Gradle Version 8.4
$JavaVersion.VERSION_17

minSdkVersion 28
targetSdkVersion 34
compileSdk 34

but I keep getting several errors related to the XML parser.

With the settings above:

java.lang.NoSuchMethodError: No interface method toList()Ljava/util/List; in class Ljava/util/stream/Stream; or its super classes (declaration of 'java.util.stream.Stream' appears in /apex/com.android.art/javalib/core-oj.jar)
                 	at io.jenetics.jpx.ElemReader.read(XMLReader.java:605)
                 	at io.jenetics.jpx.GPX$Reader.read(GPX.java:1181)
                 	at io.jenetics.jpx.GPX$Reader.read(GPX.java:1213)
                 	at io.jenetics.jpx.GPX$Reader.read(GPX.java:1229)
                 	at io.jenetics.jpx.GPX.read(GPX.java:2094)

Has anyone found the solution?