I want to wrap a library that uses some Java8 features and so my Wrapper library also needs to compile with Java8.
When I try to compile my B4A test project I get this error:
Any ideas how I can work around it?
If I understand it right, the library uses Type intersections. I have to cast the activity this "strange" way:
Maybe there is a workaround for this in Java7?
When I try to compile my B4A test project I get this error:
B4A version: 6.80 BETA #2
Parsing code. (0.00s)
Compiling code. (0.27s)
Compiling layouts code. (0.00s)
Organizing libraries. (0.00s)
Generating R file. (0.72s)
Compiling generated Java code. (2.40s)
Convert byte code - optimized dex. Error
UNEXPECTED TOP-LEVEL EXCEPTION:
com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)
at com.android.dx.cf.direct.DirectClassFile.parse0(DirectClassFile.java:472)
at com.android.dx.cf.direct.DirectClassFile.parse(DirectClassFile.java:406)
at com.android.dx.cf.direct.DirectClassFile.parseToInterfacesIfNecessary(DirectClassFile.java:388)
at com.android.dx.cf.direct.DirectClassFile.getMagic(DirectClassFile.java:251)
at com.android.dx.command.dexer.Main.processClass(Main.java:598)
at com.android.dx.command.dexer.Main.processFileBytes(Main.java:570)
at com.android.dx.command.dexer.Main.access$2(Main.java:546)
at com.android.dx.command.dexer.Main$2.processFileBytes(Main.java:514)
at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:284)
at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:166)
at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:144)
at com.android.dx.command.dexer.Main.processOne(Main.java:537)
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:449)
at com.android.dx.command.dexer.Main.runMonoDex(Main.java:236)
at com.android.dx.command.dexer.Main.run(Main.java:206)
at com.android.dx.command.dexer.Main.main(Main.java:179)
at com.android.dx.command.Main.main(Main.java:103)
...while parsing de/amberhome/materialdialogs/FileChooserDialogBuilderWrapper.class
1 error; aborting
Any ideas how I can work around it?
If I understand it right, the library uses Type intersections. I have to cast the activity this "strange" way:
B4X:
mBuilder = new FileChooserDialog.Builder((AppCompatActivity & FileCallback) ba.activity);
Maybe there is a workaround for this in Java7?