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POUnable to load native library when running titanium android app
 

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  1. POUnable to load native library when running titanium android app
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    <p>I'm building an Android app using Titanium. My Android module <code>com.tgl.androidmodule</code> includes a native lib called <code>libAlibrary-jni.so</code>.</p> <p>In my .apk, the native libs are present in their correct folders (lib/armeabi, lib/armeabi-v7a, lib/x86) but I still get an error when trying to load the library dynamically :<code>System.loadLibrary("Alibrary-jni");</code></p> <p>Here is the full stacktrace of the error:</p> <pre><code>11-12 08:46:00.654: D/dalvikvm(381): Trying to load lib /data/data/com.fw.test/lib/libstlport_shared.so 0x41e407e8 11-12 08:46:00.669: D/AndroidmoduleModule(381): (main) [18,433] inside onAppCreate 11-12 08:46:00.669: D/dalvikvm(381): Trying to load lib /data/data/com.fw.test/lib/libAlibrary-jni.so 0x41e407e8 11-12 08:46:00.719: D/dalvikvm(381): Added shared lib /data/data/com.fw.test/lib/libstlport_shared.so 0x41e407e8 11-12 08:46:00.719: D/dalvikvm(381): No JNI_OnLoad found in /data/data/com.fw.test/lib/libstlport_shared.so 0x41e407e8, skipping init 11-12 08:46:00.719: D/dalvikvm(381): Trying to load lib /data/data/com.fw.test/lib/libkroll-v8.so 0x41e407e8 11-12 08:46:00.879: D/dalvikvm(381): Added shared lib /data/data/com.fw.test/lib/libkroll-v8.so 0x41e407e8 11-12 08:46:01.039: D/dalvikvm(381): Added shared lib /data/data/com.fw.test/lib/libAlibrary-jni.so 0x41e407e8 11-12 08:46:01.054: D/dalvikvm(381): No JNI_OnLoad found in /data/data/com.fw.test/lib/libgeniusscanlibrary-jni.so 0x41e407e8, skipping init 11-12 08:46:01.959: E/TiApplication(381): (KrollRuntimeThread) [345,345] Sending event: exception on thread: KrollRuntimeThread msg:java.lang.UnsatisfiedLinkError: Couldn't load com.tgl.androidmodule: findLibrary returned null; Titanium 3.1.3,2013/09/18 12:01,222f4d1 11-12 08:46:01.959: E/TiApplication(381): java.lang.UnsatisfiedLinkError: Couldn't load com.tgl.androidmodule: findLibrary returned null 11-12 08:46:01.959: E/TiApplication(381): at java.lang.Runtime.loadLibrary(Runtime.java:365) 11-12 08:46:01.959: E/TiApplication(381): at java.lang.System.loadLibrary(System.java:535) 11-12 08:46:01.959: E/TiApplication(381): at org.appcelerator.kroll.runtime.v8.V8Runtime.loadExternalModules(V8Runtime.java:114) 11-12 08:46:01.959: E/TiApplication(381): at org.appcelerator.kroll.runtime.v8.V8Runtime.initRuntime(V8Runtime.java:81) 11-12 08:46:01.959: E/TiApplication(381): at org.appcelerator.kroll.KrollRuntime.doInit(KrollRuntime.java:175) 11-12 08:46:01.959: E/TiApplication(381): at org.appcelerator.kroll.KrollRuntime$KrollRuntimeThread.run(KrollRuntime.java:109) </code></pre> <p>Any suggestion?</p>
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    1. USguillaume-tgl
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    1. COYour custom library **was** found and loaded, but it seems the Titanium stuff has exception handling which obscures the true error that is occurring. One possibility is that the native function names do not match the expected java class names, another is that it is trying to load still another library which is missing. But we really need to know more details than the custom exception handler here is giving. You may have to examine the source code, or take the problem up with someone who has access to that if you do not. strace or the ndk debugger could be another option.
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      1. POUnable to load native library when running titanium android app
      1. USChris Stratton
    2. COYes @ChrisStratton, it seems you're right (the library is correctly loaded) since the method `onAppCreate` in my module is correctly executed and that happens before the module loading. It also seems my native function names are correct because when I call methods from `libAlibrary-jni.so` in `onAppCreate`, they are successfully executed.
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      1. POUnable to load native library when running titanium android app
      1. USguillaume-tgl
    3. COYou should probably pursue this with Titanium support, unless you can provide the source code of that exception handler and what it protects.
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      1. POUnable to load native library when running titanium android app
      1. USChris Stratton
 

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