Android线性编程lp_solve库 [英] android linear programming lp_solve library
问题描述
有人可以帮助我如何在Android设备上使用lpsolve55j.jar.我尝试将其像其他所有库一样导入(将其放入libs文件夹中，然后将其添加到JavaBuildPath->库中)，但出现此错误:
Can someone help me how to use lpsolve55j.jar on Android device. I tried importing it like every other library (putting it in libs folder and adding it in JavaBuildPath -> Libraries) but I got this error:
03-07 15:28:52.910: W/dalvikvm(3421): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Llpsolve/LpSolve;
03-07 15:28:52.910: D/AndroidRuntime(3421): Shutting down VM
03-07 15:28:52.910: W/dalvikvm(3421): threadid=1: thread exiting with uncaught exception (group=0x9e495930)
03-07 15:28:52.910: E/AndroidRuntime(3421): FATAL EXCEPTION: main
03-07 15:28:52.910: E/AndroidRuntime(3421): java.lang.UnsatisfiedLinkError: Couldn't load lpsolve55j from loader dalvik.system.PathClassLoader[dexPath=/data/app/com.app.cutstockan-2.apk,libraryPath=/data/app-lib/com.app.cutstockan-2]: findLibrary returned null
03-07 15:28:52.910: E/AndroidRuntime(3421): at java.lang.Runtime.loadLibrary(Runtime.java:365)
03-07 15:28:52.910: E/AndroidRuntime(3421): at java.lang.System.loadLibrary(System.java:535)
03-07 15:28:52.910: E/AndroidRuntime(3421): at lpsolve.LpSolve.<clinit>(LpSolve.java:275)
03-07 15:28:52.910: E/AndroidRuntime(3421): at com.app.cutstockan.Calculate.generateEquations(Calculate.java:123)
03-07 15:28:52.910: E/AndroidRuntime(3421): at com.app.cutstockan.Calculate.<init>(Calculate.java:52)
03-07 15:28:52.910: E/AndroidRuntime(3421): at com.app.cutstockan.Main$1.onClick(Main.java:37)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.view.View.performClick(View.java:4204)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.view.View$PerformClick.run(View.java:17355)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.os.Handler.handleCallback(Handler.java:725)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.os.Handler.dispatchMessage(Handler.java:92)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.os.Looper.loop(Looper.java:137)
03-07 15:28:52.910: E/AndroidRuntime(3421): at android.app.ActivityThread.main(ActivityThread.java:5202)
03-07 15:28:52.910: E/AndroidRuntime(3421): at java.lang.reflect.Method.invokeNative(Native Method)
03-07 15:28:52.910: E/AndroidRuntime(3421): at java.lang.reflect.Method.invoke(Method.java:511)
03-07 15:28:52.910: E/AndroidRuntime(3421): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
03-07 15:28:52.910: E/AndroidRuntime(3421): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
03-07 15:28:52.910: E/AndroidRuntime(3421): at dalvik.system.NativeStart.main(Native Method)
03-07 15:28:54.650: I/Process(3421): Sending signal. PID: 3421 SIG: 9
编辑
好的，所以我需要这样做是为了解决一个不等式.有人可以帮我找到可以解决此问题的该库的替代方案吗?
OK, so what I need this for is for solving a system of inequalities. Can someone help me to find alternative for this library that can solve this?
推荐答案
Apache Commons Math 是一个纯Java库，其中包含例如用于求解线性程序的Simplex算法.该库的二进制文件应该可能可以在Android应用程序中按原样使用，或者应该直接构建专门针对Android的库.
Apache Commons Math is a pure Java library that contains for example the Simplex algorithm for solving linear programs. Binaries of this library should probably be possible to use as-is in an Android application, alternatively it should be straightforward to build the library specifically for Android.
The associated unit test cases sufficiently illustrates the usage of the Apache Commons Math SimplexSolver for solving different kinds of smaller LP problems.
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