Re: Notify With Parameters
Re: Notify With Parameters
- Subject: Re: Notify With Parameters
- From: Roland King <email@hidden>
- Date: Thu, 02 Jun 2011 15:35:36 +0800
can't be compiled because he's done
NSString *message = "Happy Holidays!";
instead of the proper syntax for a string constant
NSString *message = @"Merry Christmas!";
or else the compiler hates 'Happy Holidays' as much as I do.
On 02-Jun-2011, at 3:32 PM, Jens Alfke wrote:
>
> On Jun 1, 2011, at 11:45 PM, Bing Li wrote:
>
>> My question is if it is possible to transmit data from WorkingApp to AppController?
>
> Sure; that’s what the userInfo dictionary in NSNotification is for.
>
>> // The following code cannot be compiled.
>> // NSString *message = "Happy holidays!";
>> // [[NSNotificationCenter defaultCenter] postNotificationName:@"Done"
>> object:message];
>
> Why can’t it be compiled? I don’t see any errors in there.
>
> But this probably isn’t what you want. The ‘object’ parameter of a notification is generally supposed to be the object in your model that’s sending the notification (WorkingApp in your example) not a data value. The userInfo dictionary is where data values should go.
>
> —Jens_______________________________________________
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