Re: NSOpenPanel runModal on a dispatch
Re: NSOpenPanel runModal on a dispatch
- Subject: Re: NSOpenPanel runModal on a dispatch
- From: Tom Davie <email@hidden>
- Date: Sun, 16 Dec 2012 15:32:51 +0000
On 16 Dec 2012, at 10:45, Tamas Nagy <email@hidden> wrote:
> Hey,
>
> I'm trying to display an NSOpenPanel on a dispatch, with half-luck. The panel displays, but no files going to be displayed - the circle just spinning on the bottom-left corner. Anyone have an idea what going wrong?
>
> Thanks,
>
> Tamas
>
> dispatch_async(dispatch_get_main_queue(), ^{
>
> NSOpenPanel *oPanel = [NSOpenPanel openPanel];
>
> NSMutableArray *filetype = [NSMutableArray arrayWithCapacity:0];
>
> [filetype insertObject:@"txt" atIndex:0];
>
> [oPanel setAllowedFileTypes:filetype];
> [oPanel setDirectoryURL:[NSURL URLWithString:NSHomeDirectory()]];
>
>
> NSInteger returnCode = [oPanel runModal];
>
> if (returnCode == NSOKButton) {
>
> NSLog(@"OK!");
>
> } else {
>
> NSLog(@"Cancel!");
> }
>
> });
I can't see off the top of my head what's going wrong here, but I just thought I'd comment that that looks like a pretty bizarre way of creating a constant array.
1) You know exactly how big the array's going to be – 1 object, so why hint that it's going to contain 0 objects?
2) Why use insertObject: atIndex:0 rather than addObject:
3) Why use a mutable array at all? You could just use a constant array – NSArray *filetype = [NSArray arrayWithObject:@"txt"];
4) The above can then be further condensed with the new syntactic sugar for arrays: NSArray *filetype = @[ @"txt" ];
Thanks
Tom Davie
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