On Mac Developer Library, launchApplicationAtRL return value, I Quote"The the application could not be launched nil is returned, and the error is specified in *error*." and the problem is when get an error, the program can't launch an new application, and the error is not always appear. So I am guessing, either the arguments i set was not correct, or this method have some bugs in sandbox environment?
On Fri, May 10, 2013 at 7:58 PM, Fritz Anderson <fri...@manoverboard.org>wrote: > On 1 May 2013, at 10:29 PM, Zhuang Xu <stron...@gmail.com> wrote: > > > I am using NSWorkspace launchApplicationAtURL:options:configuration:error > > launch the same app in Sandbox, sometimes there is an error: > > > > "The operation couldn't be completed. (OSStatus error - 10810)" > > > > this error appears occasionally not all the time. Is anybody know what's > > going on? Am I missing something? > > You don't say whether the method actually fails. > > The code sample you attach does not capture the result of the > launchApplication… method. I am guessing that you don't use the result, but > are relying on the NSError object returned by reference. > > This is a mistake. By convention (I hear one or two Cocoa methods are > exceptions), methods that take NSError-reference arguments are free to set > an error object even if no error occurred. Many methods nil-out the > referenced error pointer, but they don't have to. The returned error object > is valid only if the principal return value of the method indicates failure > (usually nil). > > Capture the return value, check for nil, and only then examine the error > object. > > > > and in Mac OS 10.7.4 and 10.7.5 when I set a dictionary to the third > > parameter: > > > > [image: Inline image 1] > > > > but in new app's main function, argv array don't have > > "checkAccountArgument" parameter. > > > > in Mac OS 10.8.5 it seems OK. > > I'm sure this isn't your problem, but does the URL in the first argument > in the method point to an .app bundle? I would not expect the method to > work reliably with a bare UNIX tool. > > — F > > -- > Fritz Anderson > Xcode 4 Unleashed: 4.5 supplement for free! > http://www.informit.com/store/xcode-4-unleashed-9780672333279 > > -- Best Regards, strongxu _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
