couldn't find "libepos2.so"

[Aswinhub]

**i have done the same as you did. But when i initialize the printer i get this error
**

java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.swishpay.tab-3/base.apk"],nativeLibraryDirectories=[/data/app/com.swishpay.tab-3/lib/x86, /vendor/lib, /system/lib]]] couldn't find "libepos2.so" at java.lang.Runtime.loadLibrary(Runtime.java:366) at java.lang.System.loadLibrary(System.java:989) at com.epson.epos2.printer.CommonPrinter.<clinit>(CommonPrinter.java:214) at com.swishpay.tab.EposService.initialize(EposService.java:25) at com.swishpay.tab.EposService.print(EposService.java:20) at com.swishpay.tab.activities.logins.OrganizationLogin.onClick(OrganizationLogin.java:99) at android.view.View.performClick(View.java:4757) at android.view.View$PerformClick.run(View.java:19766) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5255) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)

[thisfeng]

Sorry to reply to you now, I think you are missing the "libepos2.so" file in JniLibs, if you download my example should not be a problem. Examples of this directory file you can find out.😊

[SunryTeang]

i got message what what it error?
Process: com.epson.epos2_printer, PID: 6520
java.lang.UnsatisfiedLinkError: No implementation found for int com.epson.epos2.Log.nativeEpos2SetLogSettings(java.lang.String, int, int, java.lang.String, int, int, int) (tried Java_com_epson_epos2_Log_nativeEpos2SetLogSettings and Java_com_epson_epos2_Log_nativeEpos2SetLogSettings__Ljava_lang_String_2IILjava_lang_String_2III)
at com.epson.epos2.Log.nativeEpos2SetLogSettings(Native Method)
at com.epson.epos2.Log.setLogSettings(Log.java:43)
at cam.shushi.pos.test.MainActivity.onCreate(MainActivity.java:23)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.ja

[Aswinhub]

@SunryTeang
Try adding NDK to in your app gradle
in default config
`splits{
abi{
include 'armeabi-v5a', 'armeabi-v7a', 'x86', 'armeabi'
}
}

add this after default config
sourceSets { main { jniLibs.srcDirs = ['src/main/jniLibs/'] } }
`
NOTE : printer wont work in emulator

[thisfeng]

yes, tips !! printer wont work in emulator @SunryTeang
note gradle config ， If you want to debug, you also need to make your phone wireless debugging 。
thanks bro Reply 😁 @Aswinhub

[SunryTeang]

thank you i fix it done but i got new error like this
--------- beginning of main
try {
Log.setLogSettings(this, Log.PERIOD_TEMPORARY, Log.OUTPUT_STORAGE, "192.168.160.107", 0, 1, Log.LOGLEVEL_LOW);
} catch (Exception e) {
android.util.Log.e("error",""+e.getMessage());
//this.showException(e, "setLogSettings", tis);
}
}

05-02 14:19:31.955 5071-5071/com.epson.epos2_printer E/art: No implementation found for int com.epson.epos2.Log.nativeEpos2SetLogSettings(java.lang.String, int, int, java.lang.String, int, int, int) (tried Java_com_epson_epos2_Log_nativeEpos2SetLogSettings and Java_com_epson_epos2_Log_nativeEpos2SetLogSettings__Ljava_lang_String_2IILjava_lang_String_2III)
05-02 14:19:31.955 5071-5071/com.epson.epos2_printer E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.epson.epos2_printer, PID: 5071
java.lang.UnsatisfiedLinkError: No implementation found for int com.epson.epos2.Log.nativeEpos2SetLogSettings(java.lang.String, int, int, java.lang.String, int, int, int) (tried Java_com_epson_epos2_Log_nativeEpos2SetLogSettings and Java_com_epson_epos2_Log_nativeEpos2SetLogSettings__Ljava_lang_String_2IILjava_lang_String_2III)
at com.epson.epos2.Log.nativeEpos2SetLogSettings(Native Method)
at com.epson.epos2.Log.setLogSettings(Log.java:58)
at com.epson.epos2_printer.MainActivity.onCreate(MainActivity.java:84)
at android.app.Activity.performCreate(Activity.java:6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
at android.app.ActivityThread.-wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

[bluetoothfx]

Hello, I am also facing same problem. Is it solved? Please let me know. Thanks.

[thisfeng]

Hello, I am also facing same problem. Is it solved? Please let me know. Thanks.

Can you tell me exactly what the mistake is? I think you are missing the "libepos2.so" file in JniLibs

[bluetoothfx]

Please check for image reference:

[bluetoothfx]

Error log:

java.lang.UnsatisfiedLinkError: No implementation found for int com.epson.epos2.printer.CommonPrinter.nativeEpos2AddCommand(long, byte[]) (tried Java_com_epson_epos2_printer_CommonPrinter_nativeEpos2AddCommand and Java_com_epson_epos2_printer_CommonPrinter_nativeEpos2AddCommand__J_3B)
at com.epson.epos2.printer.CommonPrinter.nativeEpos2AddCommand(Native Method)
at com.epson.epos2.printer.CommonPrinter.addCommand(CommonPrinter.java:2054)
at com.epson.epos2.printer.Printer.addCommand(Printer.java:12)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.createMemo(EpsonTMT82PrinterActivity.java:746)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.runPrintSequence(EpsonTMT82PrinterActivity.java:108)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.onClick(EpsonTMT82PrinterActivity.java:92)
at android.view.View.performClick(View.java:6319)
at android.widget.TextView.performClick(TextView.java:11202)
at android.view.View$PerformClick.run(View.java:23995)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6816)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1565)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1453)

[bluetoothfx]

Having error inside this sdk method:

public void addCommand(byte[] data) throws Epos2Exception {

    this.outputLogCallFunction("addCommand", data);

    try {
        this.checkHandle();
        if (null == data) {
            throw new Epos2Exception(1);
        }

        int errStatus = this.nativeEpos2AddCommand(this.getEdcHandle(), data);
        if (0 != errStatus) {
            throw new Epos2Exception(errStatus);
        }
    } catch (Epos2Exception var3) {
        this.outputException("addCommand", var3);
        this.outputLogReturnFunction("addCommand", var3.getErrorStatus(), data);
        throw var3;
    }

    this.outputLogReturnFunction("addCommand", 0, data);
}

[thisfeng]

Error log:

java.lang.UnsatisfiedLinkError: No implementation found for int com.epson.epos2.printer.CommonPrinter.nativeEpos2AddCommand(long, byte[]) (tried Java_com_epson_epos2_printer_CommonPrinter_nativeEpos2AddCommand and Java_com_epson_epos2_printer_CommonPrinter_nativeEpos2AddCommand__J_3B)
at com.epson.epos2.printer.CommonPrinter.nativeEpos2AddCommand(Native Method)
at com.epson.epos2.printer.CommonPrinter.addCommand(CommonPrinter.java:2054)
at com.epson.epos2.printer.Printer.addCommand(Printer.java:12)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.createMemo(EpsonTMT82PrinterActivity.java:746)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.runPrintSequence(EpsonTMT82PrinterActivity.java:108)
at com.Android.printers.epson_TM_T82.EpsonTMT82PrinterActivity.onClick(EpsonTMT82PrinterActivity.java:92)
at android.view.View.performClick(View.java:6319)
at android.widget.TextView.performClick(TextView.java:11202)
at android.view.View$PerformClick.run(View.java:23995)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6816)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1565)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1453)

---

Maybe you need to set up the corresponding so library architecture support，
Try two ways

1. Attempt

defaultConfig {
...
ndk {
//add support SO
abiFilters 'armeabi' //, 'x86', ' 'x86_64', 'arm64-v8a'
}
}
2. or Delete other JniLibs file ，Leave only one. armeabi

Please use the real machine to dev debug

[bluetoothfx]

@thisfeng your solution works fine. When I port your solution to my project this problem occurs.

[thisfeng]

@bluetoothfx - -， First debug it with this Demo, and then transplant it to your own project. Or look at the official Demo. xixi😁

https://download.epson-biz.com/modules/pos/index.php?page=soft&scat=61&ml_lang=zh-Cn

[bluetoothfx]

It is already done mate. But problem is happening on my project. Both yours and link examples are working fine. 😄

[bluetoothfx]

@SunryTeang @thisfeng The issue is resolved. Please carefully add the libepos2.so file. Make sure it is 183 kb not over 200 kb there is 2 version for libepos2.so over the internet. But only with 183 kb is working properly. Which can be found with this repository. Thanks everyone.