Bug 2367 - Invalid Java generated for constructors that call base with different parameters
Summary: Invalid Java generated for constructors that call base with different parameters
Status: RESOLVED FIXED
Alias: None
Product: Android
Classification: Xamarin
Component: Tools and Addins ()
Version: 2.0
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2011-12-06 12:10 UTC by Jonathan Pobst
Modified: 2011-12-08 22:12 UTC (History)
3 users (show)

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

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Status:
RESOLVED FIXED

Description Jonathan Pobst 2011-12-06 12:10:37 UTC
Calls to Java's "super" in constructors is based on the constructor definition even though it may be calling base with different parameters:

using System;
using Android.Content;
using Android.Widget;

namespace LayoutTest
{
	class MyLayout : LinearLayout
	{
		// This constructor is fine
		public MyLayout (Context context) : base (context)
		{
		}

		// This constructor causes the error:
		// cannot find symbol
		// symbol  : constructor LinearLayout()
		// location: class android.widget.LinearLayout
		// 		super ();
		public MyLayout () : base (null)
		{
		}
	}
}
Comment 1 Philippe Girolami 2011-12-07 03:52:30 UTC
"The workaround is to remove your constructor with no parameters:
protected DrteView()
: this((Context)CdlAndroidSettings.Organizer.Form)
{
}
"

I can do that while I'm doing development on other parts but I'm going to need that empty constructor in a couple of weeks.

BTW, the same thing happens if I create any constructor that doesn't take a Context and doesn't have a matching base constructor with the same parameters.
Comment 2 Jonathan Pryor 2011-12-08 22:12:35 UTC
Fixed in 6679dfc62eae462b5acc9deb095d0fa41786f80b.

As ar as comment #1 goes, with the current fix we'll skip generating a default constructor for DrteView's default constructor, allowing the ACW to compile properly.