/// <summary>
/// Hack using reflection to get a pointer to java jni SetByteArrayRegion function pointer
/// </summary>
private static void GetSetArrayRegionFunctionPointer()
{
// ReSharper disable PossibleNullReferenceException
try
{
var jniEnvGetter = typeof(JNIEnv).GetMethod("get_Env", BindingFlags.Static | BindingFlags.NonPublic);
var jniEnvInstanceField = jniEnvGetter.ReturnType.GetField("JniEnv", BindingFlags.NonPublic | BindingFlags.Instance);
var setByteArrayFunctionField = jniEnvInstanceField.FieldType.GetField("SetByteArrayRegion", BindingFlags.Public | BindingFlags.Instance);
var jniEnvInstance = jniEnvInstanceField.GetValue(jniEnvGetter.Invoke(null, null));
var pointerToSetByteArrayFunction = (IntPtr)setByteArrayFunctionField.GetValue(jniEnvInstance);
setJavaByteArray = Marshal.GetDelegateForFunctionPointer <SetJavaByteArrayRegionDelegate>(pointerToSetByteArrayFunction);
}
catch (Exception)
{
setJavaByteArray = null;
}
// ReSharper restore PossibleNullReferenceException
}
/// <summary>
/// Hack using reflection to get a pointer to java jni SetByteArrayRegion function pointer
/// </summary>
private static void GetSetArrayRegionFunctionPointer()
{
// ReSharper disable PossibleNullReferenceException
try
{
var jniEnvGetter = typeof(JNIEnv).GetMethod("get_Env", BindingFlags.Static | BindingFlags.NonPublic);
var jniEnvInstanceField = jniEnvGetter.ReturnType.GetField("JniEnv", BindingFlags.NonPublic | BindingFlags.Instance);
var setByteArrayFunctionField = jniEnvInstanceField.FieldType.GetField("SetByteArrayRegion", BindingFlags.Public | BindingFlags.Instance);
var jniEnvInstance = jniEnvInstanceField.GetValue(jniEnvGetter.Invoke(null, null));
var pointerToSetByteArrayFunction = (IntPtr)setByteArrayFunctionField.GetValue(jniEnvInstance);
setJavaByteArray = Marshal.GetDelegateForFunctionPointer<SetJavaByteArrayRegionDelegate>(pointerToSetByteArrayFunction);
}
catch (Exception)
{
setJavaByteArray = null;
}
// ReSharper restore PossibleNullReferenceException
}