Ref-adapter classloader explodes at runtime

[kenrestivo]

Does ref-adapter work?

I'm trying to use ref-adapter, looks very cool, but explodes at runtime with, among other things, the following:

E AndroidRuntime(7164)        Caused by: java.lang.ClassNotFoundException: neko.ui.adapters.InterchangeableListAdapter
E AndroidRuntime(7164)          at java.lang.Class.classForName(Native Method)
E AndroidRuntime(7164)          at java.lang.Class.forName(Class.java:217)
E AndroidRuntime(7164)          at java.lang.Class.forName(Class.java:172)
E AndroidRuntime(7164)          at neko.ui.adapters$loading__4910__auto__.invoke(adapters.clj:12)
E AndroidRuntime(7164)          at neko.ui.adapters__init.load(Unknown Source)
E AndroidRuntime(7164)          at neko.ui.adapters__init.<clinit>(Unknown Source)
E AndroidRuntime(7164)          ... 36 more
E AndroidRuntime(7164)        Caused by: java.lang.NoClassDefFoundError: neko/ui/adapters/InterchangeableListAdapter
E AndroidRuntime(7164)          ... 42 more

It's unclear from the stacktrace where exactly the failure is, but it happens at the SplashActivity, and the code which calls ref-adapter is:

(defn schedule-adapter []
  (adapters/ref-adapter
   (fn [] [:text-view {}])
   (fn [_ view _ show]
     (on-ui
      (.setText view (format-show show)))) 
   schedule/schedule
   :future))

My versions of things are:

Leiningen 2.3.4 on Java 1.7.0_03 OpenJDK 64-Bit Server VM

And Android SDK 22.3.

And some project stuff:

; ...
  :source-paths ["src/clojure" "src"]
  :java-source-paths ["src/java" "gen"]
  :plugins [[lein-droid "0.2.2"]]
  :javac-options ["-target" "1.6" "-source" "1.6" "-Xlint:-options"]
  :dependencies [[org.clojure-android/clojure "1.5.1-jb" :use-resources true]
                 [neko/neko "3.0.0"]
                 [utilza "0.1.53"]
                 [cheshire "5.3.0"]]
  :profiles {:dev {:dependencies [[android/tools.nrepl "0.2.0-bigstack"]
                                  [clojure-complete "0.2.3"]
                                  [compliment "0.0.3"]]
; ...
  :android {
            :dex-opts ["-JXmx4096M"]
            :support-libraries ["v13"] ;; needed for localbroadcast
            :target-version "14"
            :aot-exclude-ns [clojure.parallel
                             clojure.core.reducers
; ...

And I'm building with lein-droid doall.

I've tried cleaning with lein clean, and wiping out the old APK on the device.

The device is a TF101 running CM 9.1.

Indeed, I looked into the classes.dex and if I am reading it correctly the class is not in there, though it is referenced:

  Virtual methods   -
    #0              : (in Lneko/ui/adapters$ref_adapter;)
      name          : 'invoke'
      type          : '(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;'
      access        : 0x0001 (PUBLIC)
      code          -
      registers     : 13
      ins           : 4
      outs          : 5
      insns size    : 33 16-bit code units
      catches       : (none)
      positions     : 
        0x0000 line=19
      locals        : 
        0x0001 - 0x0020 reg=0 this Lneko/ui/adapters$ref_adapter; 
        0x0002 - 0x0021 reg=1 create_view_fn Ljava/lang/Object; 
        0x0003 - 0x0021 reg=2 update_view_fn Ljava/lang/Object; 
        0x0004 - 0x0021 reg=3 ref_type Ljava/lang/Object; 
        0x0000 - 0x0021 reg=9 this Lneko/ui/adapters$ref_adapter; 
    #1              : (in Lneko/ui/adapters$ref_adapter;)
      name          : 'invoke'
      type          : '(Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;'
      access        : 0x0001 (PUBLIC)
      code          -
      registers     : 20
      ins           : 5
      outs          : 4
      insns size    : 310 16-bit code units
      catches       : (none)
      positions     : 
        0x0000 line=19
        0x005e line=44
        0x0078 line=45
        0x009a line=19
      locals        : 
        0x004f - 0x0057 reg=5 create_fn Lneko/ui/adapters$ref_adapter$create_fn__2359; 
        0x0001 - 0x0099 reg=0 this Lneko/ui/adapters$ref_adapter; 
        0x0078 - 0x0099 reg=6 adapter Lneko/ui/adapters/InterchangeableListAdapter; 
        0x0057 - 0x009a reg=5 create_fn Ljava/lang/Object; 
        0x009a - 0x0136 reg=0 this Lneko/ui/adapters$ref_adapter; 
        0x0003 - 0x0136 reg=1 create_view_fn Ljava/lang/Object; 
        0x0005 - 0x0136 reg=2 update_view_fn Ljava/lang/Object; 
        0x0007 - 0x0136 reg=3 ref_type Ljava/lang/Object; 
        0x0009 - 0x0136 reg=4 access_fn Ljava/lang/Object; 
        0x0000 - 0x0136 reg=15 this Lneko/ui/adapters$ref_adapter; 
  source_file_idx   : 15306 (adapters.clj)

And, looking in target/classes, there's nothing there either.

find target/ -name '*InterchangeableListAdapter*'
$

So, it looks like this class is not getting compiled at all? Why would that be? Is there something wrong with my toolchain, is there something I have misconfigured, or is something missing from neko?

[alexander-yakushev]

This is weird. InterchangeableListAdapter is a part of Neko, it is written in Java, and is included into Neko jar in the compiled form. So for some reason it is not included into dex-file, I've never faced such an issue.

This could be a problem of JDK version mismatch. Can you try doing the same with Neko 3.0.1? It doesn't contain any relevant changes but I could have compiled it with JDK7 (while 3.0.0 might be compiled with 6).

Also, can you do DEBUG=1 lein droid create-dex to see all the jars that are scanned for classfiles during dexing?

[kenrestivo]

Will do. With neko 3.0.1, and create-dex, the neko 3.0.1 jar is indeed being included, and I get this interesting error:

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing neko/ui/adapters/InterchangeableListAdapter.class
...while processing neko/ui/adapters/InterchangeableListAdapter.class

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing JSONStringEscapingInputStream.class
...while processing JSONStringEscapingInputStream.class

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing org/writequit/tigris/JSONStringEscapingInputStream.class
...while processing org/writequit/tigris/JSONStringEscapingInputStream.class
3 warnings

And the same crash happens.

With 3.0.0, create-dex says:

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing neko/ui/adapters/InterchangeableListAdapter.class
...while processing neko/ui/adapters/InterchangeableListAdapter.class

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing JSONStringEscapingInputStream.class
...while processing JSONStringEscapingInputStream.class

trouble processing:
bad class file magic (cafebabe) or version (0033.0000)
...while parsing org/writequit/tigris/JSONStringEscapingInputStream.class
...while processing org/writequit/tigris/JSONStringEscapingInputStream.class
3 warnings

So, some version mismatch? I confess to being rather ignorant of the JVM and these Java issues, and I thank you very much for your help and quick response. I'm not sure what to do next here.

[kenrestivo]

I should also note that create-dex also says:

/usr/local/android/sdk-linux_x86/build-tools/17.0.0/dx 

Which is odd because I have 19.0.1 installed as well.

[kenrestivo]

Aha, I forcibly deleted 17.0.0 and 19.0.1 and left only 19.0.3 in the build-tools dir, and create-dex found the most recent version and used it... and the cafebabe errors stopped.

[kenrestivo]

That was it! With dex from 19.0.3, the error goes away and the program runs. ref-adapter is very cool, almost om/reagent/react-like. Thanks!