Android SAXParserFacotry.newInstance() Throws Exception when Minify Enabled

Question

I enabled Minify in my release for SDK 15 as a target and now some installs get a failure:

Exception q1.b:
 at javax.xml.parsers.FactoryFinder.newInstance (FactoryFinder.java:200)
 at javax.xml.parsers.FactoryFinder.newInstance (FactoryFinder.java:152)
 at javax.xml.parsers.FactoryFinder.find (FactoryFinder.java:277)
 at javax.xml.parsers.SAXParserFactory.newInstance (SAXParserFactory.java:127)
 at com.hubbardsoftware.racetac.NOAAChartCatalog.update (NOAAChartCatalog.java:168)
 at com.hubbardsoftware.racetac.NOAAChartCatalog.load (NOAAChartCatalog.java:104)
 at com.hubbardsoftware.racetac.ChartLoaderThread.checkForNOAAChartUpdates(ChartLoaderThread.java:166)
 at com.hubbardsoftware.racetac.ChartLoaderThread.run (ChartLoaderThread.java:140)
Caused by java.lang.ClassNotFoundException:
 at java.lang.Class.classForName
 at java.lang.Class.forName (Class.java:607)
 at javax.xml.parsers.FactoryFinder.getProviderClass (FactoryFinder.java:124)
 at javax.xml.parsers.FactoryFinder.newInstance (FactoryFinder.java:188)
 at javax.xml.parsers.FactoryFinder.newInstance (FactoryFinder.java:152)

The line in question is simply:

    SAXParserFactory factory = SAXParserFactory.newInstance();

Any thoughts? Thanks

Dave Hubbard · Accepted Answer · 2025-07-02 14:59:53Z

0

Minify conflicts with ProGuard. Other posts report similar behaviors, just in different areas of code. Depends on the app. Code starts running but can have extremely odd behaviors. One one verson of my app it ran, but the XML parsing was returning bad values. In another, file output streams were being closed during use. Google should detect this.

answered Jul 2 at 14:59

Dave Hubbard

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