/// <summary> /// /// </summary> /// <param name="options"></param> /// <param name="AddToExistingJVM"></param> /// <param name="targetVersion">Specified the version</param> public void LoadVM(Dictionary <string, string> options, bool AddToExistingJVM = false, JNIVersion targetVersion = JNIVersion.JNI_VERSION_10) { // Set the directory to the location of the JVM.dll. // This will ensure that the API call JNI_CreateJavaVM will work // TODO : maybe remove this after changing DLLImport by Assembly dynamic loading // This probably break pathes to ressources // Directory.SetCurrentDirectory(Path.GetDirectoryName(JavaNativeInterface.__jvmDllPath)); var args = new JavaVMInitArgs(); args.version = (int)targetVersion; args.ignoreUnrecognized = JavaVM.BooleanToByte(true); // True if (options.Count > 0) { args.nOptions = options.Count; var opt = new JavaVMOption[options.Count]; int i = 0; foreach (KeyValuePair <string, string> kvp in options) { string optionString = kvp.Key.ToString() + "=" + kvp.Value.ToString(); opt[i++].optionString = Marshal.StringToHGlobalAnsi(optionString); } fixed(JavaVMOption *a = &opt[0]) { // prevents the garbage collector from relocating the opt variable as this is used in unmanaged code that the gc does not know about args.options = a; } } if (!AttachToCurrentJVMThread) { IntPtr environment; IntPtr javaVirtualMachine; int result = JavaVM.JNI_CreateJavaVM(out javaVirtualMachine, out environment, &args); if (result != JNIReturnValue.JNI_OK) { throw new Exception("Cannot create JVM " + result.ToString()); } jvm = new JavaVM(javaVirtualMachine); env = new JNIEnv(environment); } else { AttachToCurrentJVM(args); } }
private JValue[] ParseParameters(IntPtr javaClass, string sig, params object[] param) { JValue[] retval = new JValue[param.Length]; int startIndex = sig.IndexOf('(') + 1; for (int i = 0; i < param.Length; i++) { string paramSig = ""; if (sig.Substring(startIndex, 1) == "[") { paramSig = sig.Substring(startIndex++, 1); } if (sig.Substring(startIndex, 1) == "L") { paramSig = paramSig + sig.Substring(startIndex, sig.IndexOf(';', startIndex) - startIndex); startIndex++; // skip past ; } else { paramSig = paramSig + sig.Substring(startIndex, 1); } startIndex = startIndex + (paramSig.Length - (paramSig.IndexOf("[", StringComparison.Ordinal) + 1)); if (param[i] is string) { if (!paramSig.Equals("Ljava/lang/String")) { throw new Exception("Signature (" + paramSig + ") does not match parameter value (" + param[i].GetType().ToString() + ")."); } retval[i] = new JValue() { l = env.NewString(param[i].ToString(), param[i].ToString().Length) }; } else if (param[i] == null) { retval[i] = new JValue(); // Just leave as default value } else if (paramSig.StartsWith("[")) { retval[i] = ProcessArrayType(javaClass, paramSig, param[i]); } else { retval[i] = new JValue(); FieldInfo paramField = retval[i].GetType().GetFields(BindingFlags.Public | BindingFlags.Instance).AsQueryable().FirstOrDefault(a => a.Name.ToUpper().Equals(paramSig)); if ((paramField != null) && ((param[i].GetType() == paramField.FieldType) || ((paramField.FieldType == typeof(bool)) && (param[i] is byte)))) { paramField.SetValueDirect(__makeref(retval[i]), paramField.FieldType == typeof(bool) // this is an undocumented feature to set struct fields via reflection ? JavaVM.BooleanToByte((bool)param[i]) : param[i]); } else { throw new Exception("Signature (" + paramSig + ") does not match parameter value (" + param[i].GetType().ToString() + ")."); } } } return(retval); }