Bump to xamarin/Java.Interop/master@007b35b

src/Mono.Android/Android.Runtime/AndroidRuntime.cs

@@ -558,10 +558,12 @@ public override void RemovePeer (IJavaPeerable value)
 		{
 			if (value == null)
 				throw new ArgumentNullException (nameof (value));
-			if (!value.PeerReference.IsValid)
-				throw new ArgumentException ("Must have a valid JNI object reference!", nameof (value));
 
 			var reference       = value.PeerReference;
+			if (!reference.IsValid) {
+				// Likely an idempotent DIspose(); ignore.
+				return;
+			}
 			var hash            = JNIEnv.IdentityHash! (reference.Handle);
 
 			RemovePeer (value, hash);

src/Mono.Android/Test/Java.Lang/ObjectTest.cs

@@ -67,6 +67,14 @@ public void JnienvCreateInstance_RegistersMultipleInstances ()
 				Assert.AreSame (adapter, registered);
 			}
 		}
+
+		[Test]
+		public void NestedDisposeInvocations ()
+		{
+			var value = new MyDisposableObject ();
+			value.Dispose ();
+			value.Dispose ();
+		}
 	}
 
 	/*
@@ -157,4 +165,23 @@ public override void SetSelection (int position)
 			throw new NotImplementedException();
 		}
 	}
+
+	public class MyDisposableObject : Java.Lang.Object
+	{
+		bool _isDisposed;
+		public MyDisposableObject ()
+		{
+		}
+
+		protected override void Dispose (bool disposing)
+		{
+			if (_isDisposed) {
+				return;
+			}
+			_isDisposed = true;
+			if (this.Handle != IntPtr.Zero)
+				this.Dispose ();
+			base.Dispose (disposing);
+		}
+	}
 }