java.lang.UnsatisfiedLinkError中：无法加载eposprint：findLibrary返回null [英] java.lang.UnsatisfiedLinkError: Couldn't load eposprint: findLibrary returned null

问题描述

我使用Android的工作室。我使用的E-POS-Print.jar在我的应用程序。每当我运行code我得到这个错误：

I am using Android Studio. I am using e-POS-Print.jar in my app. Whenever I run the code I get this error:

java.lang.ExceptionInInitializerError
        at com.stc.printer.MyActivity.onCreate(MyActivity.java:48)
        at android.app.Activity.performCreate(Activity.java:5163)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1094)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2061)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2122)
        at android.app.ActivityThread.access$600(ActivityThread.java:140)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1228)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4895)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.UnsatisfiedLinkError: Couldn't load eposprint: findLibrary returned null
        at java.lang.Runtime.loadLibrary(Runtime.java:365)
        at java.lang.System.loadLibrary(System.java:535)
        at com.epson.eposprint.Print.<clinit>(Print.java:18)
        at com.stc.printer.MyActivity.onCreate(MyActivity.java:48)

我的code：

My code:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_my);

    System.out.println("started");

    printerName = getString(R.string.printername_t81ii);
    language = Builder.MODEL_SOUTHASIA;

    //bellow is line no. 48
    Print newPrinter = new Print(getApplicationContext());
    try{
        newPrinter.openPrinter(deviceType, openDeviceName, enabled, interval);

    }catch(Exception e){
        System.out.println("Error");
        e.printStackTrace();
        newPrinter = null;
    }

    setPrinter(newPrinter);
}

这是爱普生示例项目具有的.so分机上的本机文件。但即使我删除示例项目，文件，它的工作原理。

The sample project from Epson is having one native file with .so extension. But even if I remove that file from sample project it works.

我也尝试添加该文件到我的项目。但我不能给文件添加到我的构建路径。

I also tried adding that file to my project. But I am not able to add that file to my build path.

我还提到多个答案从<一个href="http://stackoverflow.com/questions/9037966/android-ndk-java-lang-unsatisfiedlinkerror-findlibrary-returned-null">this链接但我没有成功。

I also referred multiple answers from this link but I am unsuccessful.

推荐答案

检查很多网站，阅读多个答案之后，我终于想通了该解决方案。

After checking many sites, reading multiple answers, finally I figured out the solution.

创建文件夹树：

|---src
     |---main
           |---jniLibs
                  |---armeabi
                         |---nativeLib.so

将您的文件，在 armeabi 文件夹。而且它会工作。

Place your files under armeabi folder. And it will work.

<一个href="http://examples.java$c$cgeeks.com/java-basics/exceptions/java-lang-unsatisfiedlinkerror-how-to-handle-unsatisfied-link-error/">More关于 java.lang.UnsatisfiedLinkError中

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