java.lang.UnsatisfiedLinkError on Android

[Raptorhugo]

HI, sorry for my english. I'm trying to use jSerialComm.jar in my android project.
Device is Android 4.4.2 with phisical serial ports (no usb to rs232)

In my build.grandle i've set
compile 'com.fazecast:jSerialComm:1.3.11'

than in app/src/main I've created jniLibs with structure and .so files.

in mainActivity

System.loadLibrary("jSerialComm"); //no errors
SerialPort[]    sp= null;
try
 {
    sp= SerialPort.getCommPorts(); //error !!!!
 }
catch(Exception ex)
{
 ex.printStackTrace();
 }

When start project on device i run into an error:
java.lang.UnsatisfiedLinkError: dlopen failed: "/data/data/com.apiciolabs.easycash/cache/1463764816989-libjSerialComm.so" is too small to be an ELF executable at java.lang.Runtime.load(Runtime.java:333) at java.lang.System.load(System.java:512) at com.fazecast.jSerialComm.SerialPort.<clinit>(SerialPort.java:181) at com.apiciolabs.easycash.ControlApplication.onCreate(ControlApplication.java:192) at com.android.tools.fd.runtime.BootstrapApplication.onCreate(BootstrapApplication.java:326) at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1007) at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4325) at android.app.ActivityThread.access$1400(ActivityThread.java:135) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1457) at android.os.Handler.dispatchMessage(Handler.java:102) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4998) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:811) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:627) at dalvik.system.NativeStart.main(Native Method)

in data/data/com.apiciolabs.easycash/cache/1463764816989-libjSerialComm.so is 0 byte. I can't understand what is wrong . Can you help me please?
Best regards

[agur]

Getting the same issue and the file is 0 size too:

u0_a42@klteatt:/data/data/berserker.android.apps.sshdroid/home/dl $ date && ll /data/data/com.hoho.android.usbserial.examples/cache/1477522065592-libjSerialComm.>
Wed Oct 26 22:48:47 GMT 2016
-rw-------    1 app_351  app_351          0 Oct 26 22:47 /data/data/com.hoho.android.usbserial.examples/cache/1477522065592-libjSerialComm.so
u0_a42@klteatt:/data/data/berserker.android.apps.sshdroid/home/dl $

I have seen a similar challange before, where the apk would have the OSx and Win binary libs but not the android one, despite having the android one baked in the jar properly next to the others.

My Android version is 4.4.2.

10-26 16:01:30.466 31419-31419/com.hoho.android.usbserial.examples E/AndroidRuntime: 
    FATAL EXCEPTION: main
    Process: com.hoho.android.usbserial.examples, PID: 31419
    java.lang.UnsatisfiedLinkError: dlopen failed: "/data/data/com.hoho.android.usbserial.examples/cache/1477522883565-libjSerialComm.so" is too small to be an ELF executable
        at java.lang.Runtime.load(Runtime.java:333)
        at java.lang.System.load(System.java:512)
        at com.fazecast.jSerialComm.SerialPort.<clinit>(SerialPort.java:181)
        at com.hoho.android.usbserial.examples.SerialConsoleActivity.onResume(SerialConsoleActivity.java:192)
        at android.app.Instrumentation.callActivityOnResume(Instrumentation.java:1198)
        at android.app.Activity.performResume(Activity.java:5530)
        at android.app.ActivityThread.performResumeActivity(ActivityThread.java:2959)
        at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:2998)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2391)
        at android.app.ActivityThread.access$900(ActivityThread.java:169)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1277)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5476)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
        at dalvik.system.NativeStart.main(Native Method)

And yes:

System.loadLibrary("jSerialComm"); //no errors

does not error out - good point, thanks.

There is a difference between the calls to System.load and System.loadLibrary
Will keep debugging into it.

Also, this may be similar to #36 jSerialComm on Android. I have also updated the library code to resolve that issue, though used another method. Have then included the jar and sources jar in the libs/ folder and included with compile files('libs/jSerialComm-1.3.13.1-SNAPSHOT.jar'). If things do work properly, I may later publish conclusions if finding the time for it.

[adityagoel19]

Hi, were you able to find solution to this? I am facing the same problem. Android version 4.4.2

[agur]

Was not doing much Android later on.

[hedgecrw]

Closing this (with external reference) in favor of a new single issue to address the several very similar Android-based problems.