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POAndroid UnsatisfiedLinkError: Issue loading a shared library
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  1. POAndroid UnsatisfiedLinkError: Issue loading a shared library
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    copied!<p>I am compiling some Java code, putting it into a .JAR and then running dx --dex on it. I am pushing my file to an Android device through adb but I am having problem linking my shared library at runtime.</p> <p>In HostConnection.java, I have the following code to load my library:</p> <pre><code>static { System.loadLibrary("hostConnection"); } </code></pre> <p>I am loading the application this way:</p> <pre><code>adb shell su export CLASSPATH=/data/local/device.jar export LD_LIBRARY_PATH=/data/local/libhostConnection.so exec app_process /system/bin com.device.client.Main </code></pre> <p>I am unfortunately getting the following error:</p> <pre><code>D/dalvikvm( 1616): DexOpt: load 482ms, verify 84ms, opt 10ms D/dalvikvm( 1608): DexOpt: --- END 'device.jar' (success) --- D/dalvikvm( 1608): DEX prep '/data/local/device.jar': unzip in 1715ms, rewrite 1287ms W/dalvikvm( 1608): Exception Ljava/lang/UnsatisfiedLinkError; thrown during Lcom/device/client/HostConnection;.&lt;clinit&gt; D/AndroidRuntime( 1608): Shutting down VM W/dalvikvm( 1608): threadid=1: thread exiting with uncaught exception (group=0x4001d830) I/Process ( 1608): Sending signal. PID: 1608 SIG: 9 E/AndroidRuntime( 1608): *** FATAL EXCEPTION IN SYSTEM PROCESS: main E/AndroidRuntime( 1608): java.lang.ExceptionInInitializerError E/AndroidRuntime( 1608): at com.device.client.Main.&lt;init&gt;(Main.java:27) E/AndroidRuntime( 1608): at com.device.client.Main.main(Main.java:21) E/AndroidRuntime( 1608): at com.android.internal.os.RuntimeInit.finishInit(Native Method) E/AndroidRuntime( 1608): at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:235) E/AndroidRuntime( 1608): at dalvik.system.NativeStart.main(Native Method) E/AndroidRuntime( 1608): Caused by: java.lang.UnsatisfiedLinkError: Library hostConnection not found E/AndroidRuntime( 1608): at java.lang.Runtime.loadLibrary(Runtime.java:461) E/AndroidRuntime( 1608): at java.lang.System.loadLibrary(System.java:557) E/AndroidRuntime( 1620): at com.device.client.HostConnection.&lt;clinit&gt;(HostConnection.java:25) </code></pre> <p>The line 25 in HostConnection.java is indeed System.loadLibrary("hostConnection").</p> <p>My library is called libhostConnection.so and my .jar is called device.jar. They are both stored in /data/local. I have tried moving the shared library to /system/lib but the shell does not let me copy the file (read-only).</p> <p>I am not sure what I am doing wrong, but I believe it cannot find the shared library for linking when running the application. I am not sure if I am using the wrong variable in export, or if I am supposed to do something else.</p> <p>Could anyone please help me? It would be much appreciated.</p> <p>Thank you very much!</p>
 

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