Bug 34766 - Allow setting return types to void
Summary: Allow setting return types to void
Alias: None
Product: Android
Classification: Xamarin
Component: Bindings ()
Version: unspecified
Hardware: All All
: Low enhancement
Target Milestone: master
Assignee: Atsushi Eno
Depends on:
Reported: 2015-10-12 12:12 UTC by Matthew Leibowitz
Modified: 2016-09-21 13:31 UTC (History)
2 users (show)

Tags: XATriaged
Is this bug a regression?: ---
Last known good build:

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Description Matthew Leibowitz 2015-10-12 12:12:36 UTC
When binding Android libraries, I often come across the Java pattern:

class Mine {
  int GetNumber();
  Mine setNumber(int);

In C#, we would have a single Number property.

It would be great to be able to set the managedReturn value to 'void'.

Currently if I do, then the property is created, but the code in the setter is invalid:

  void __ret = Java.Lang.Object.GetObject<Mine> (...);
  return __ret;

It seems that in the special case of void, the result can be ignored?
Comment 1 Atsushi Eno 2015-10-12 22:30:47 UTC
I don't quite understand why you need managedReturn there while those methods should be already converted to a property... ?
Comment 2 Atsushi Eno 2015-10-12 22:36:51 UTC
oh, never mind, your setter doesn't return void. Well, managedReturn doesn't do the trick either. It never changes how JNI invocation works (if we change that, that will break any internal invocations and causes run-time crash, which 100% users don't want).

Supporting fluent method setters is a different issue and it is so far unsupported by design, while we _might_ be adding at some stage. If I remember correctly it was discussed in last August Android meeting.