I would like to have some guidance on the proper way to 'gracefully'
terminate a program that cannot proceed, for example, when some
critical resource can't be created or doesn't exist.
I've look through all my reference books and searched the internet for
sample code but have come up empty handed
al termination of
the program, so I should probably be writing a general way of handling
such events.
I hope I'm on the right track. Thanks all for your replies.
On Thu, Apr 29, 2010 at 1:48 PM, Fritz Anderson wrote:
> On 29 Apr 2010, at 1:31 PM, Paul Johnson wrote:
>
>> I w
ad ended. Maybe this is a bug -- looks like that to me at least.)
On Thu, Apr 29, 2010 at 3:14 PM, Jens Alfke wrote:
>
> On Apr 29, 2010, at 12:56 PM, Paul Johnson wrote:
>
>> I found one possible tip in "Cocoa Design Patterns" (p. 253.) The
>> sample code uses
I have two programs. The first one (Setup) creates a file that the
second one (Main) reads to initialize an array.
I want to use the Data Modeler and Core Data.
Setup is a Core Data Command Line Tool while Main is a Cocoa
document-based application that also uses Core Data.
In Main's application
I have a Core Data application with a drawer. The drawer contents is an
array that I want to initialize from a file created by a Core Data Command
Line tool.
In applicationDidFinishLaunching: I have set up the Managed Object Context.
I've initialized the Persistent Store Coordinator, read the .mo
I'm looking for an example of the use of a popup menu to determine the array
items to display in a tableview. I'm trying to use Core Data and do this in
Interface Builder as much as possible.
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I'm trying to find a best way to create the Application Support
folder. I'm rather new at Cocoa so it's taking me a while to do even
this simple thing. I'm also interested in ensuring my application can
be localized easily.
I have a function "- (NSString *)applicationSupportFolder" that
returns th
I am working on a Document-based application that needs to have a
certain file in ~/Library/Application Support/ before it can
do anything. It needs to be created the first time the program is run
(or if it has been deleted by the user).
I've created a class XXAppDelegate and declared it as implem
the app to function normally. Files that are
> necessary should be inside your app bundle, usually.
> -Steven
>
> On Wed, Feb 17, 2010 at 4:21 PM, Paul Johnson wrote:
>>
>> I am working on a Document-based application that needs to have a
>> certain file in ~/Library/Applic
Kyle, I've reread your post and now see your last sentence, where you
mention Library/Caches. I guess that could be an acceptable location
for the data I download from the internet. I still feel the data as
being more "persistent" than data associated with a 'cache' though.
I'm considering adding
I've created an Xcode project using the Command Line Tool template
with the Type set to "Core Data".
I defined an Entity with 3 Properties. Two of the Properties are
strings and one is an integer (Int 16).
I fetch data from 3 files read from the internet and use a scanner
which extracts the strin
romData:ofType:error:. Instead of the save: method when would one
archive the data using dataOfType:error:?
On Mon, Mar 8, 2010 at 7:48 PM, Roland King wrote:
>
>
> Paul Johnson wrote:
>>
>> In the innermost scanner loop, I am trying to use
>> NSEntityDescription
>> i
I'm really unclear on how to structure my program, in particular the
controllers. In IB I dragged a 'Window and Drawer' to the document window.
In the drawer I have a Table View, and I have another Table View in the Main
Window. I want to be able to drag a selection from the Drawer to the Window.
I have two table views and I want to drag and drop from one to the other.
I'm using Core Data and Bindings, and the
I'm able to select items in the source table and I'm copying an index set
listing indexes of the selected items to the pasteboard.
I haven't been able to drop the selected items
I am trying to drag and drop from one text view to another. I can write an
index set of copied rows to the pasteboard using:
- (BOOL)tableView:(NSTableView *)tv
writeRowsWithIndexes:(NSIndexSet *)rowIndexes
toPasteboard:(NSPasteboard*)pboard {
// Copy the row numbers to the pasteboar
I think I've made some progress. I've rewritten
tableView:writeRowsWithIndexes:toPasteboard: for the source table view:
- (BOOL) tableView:(NSTableView *)tv
writeRowsWithIndexes:(NSIndexSet *)rowIndexes
toPasteboard:(NSPasteboard *)pboard {
NSArray *rows = [self arrangedObjects
Thanks, Graham. I've almost got it working. I did implement the drop
validation method and in my initWithNib method I did set up the destination
to receive the drag type. That's all working fine.
I took your suggestion to archive the array to a NSData object. I needed to
implement encodeWithCoder
Thanks, Graham. Let me restate the "drag and drop" problem I'm having and
maybe someone with Core Data experience can give me some further help:
I have been trying to get drag and drop working to copy from one tableview
to another in the same application. Each table view uses Core Data to obtain
i
Sean, the sample code you refer to doesn't use Core Data. My issue is with
the use of Core Data along with drag and drop.
On Thu, Oct 28, 2010 at 4:34 PM, Sean McBride wrote:
> On Mon, 25 Oct 2010 12:55:32 -0500, Paul Johnson said:
>
> >I have two table views and I want to drag
:20 pm, Paul Johnson wrote:
>
> > The model for the data in the destination tableview is essentially the
> same
> > as for the source tableview. The only difference is that the data model
> for
> > the destination tableview has an additional entity and a relationship.
&
0 at 5:47 PM, Kyle Sluder wrote:
> On Thu, Oct 28, 2010 at 3:43 PM, Paul Johnson wrote:
> > Sean, the sample code you refer to doesn't use Core Data. My issue is
> with
> > the use of Core Data along with drag and drop.
>
> No, your issue is that you haven't learned h
I believe I've found the answer to my drag and drop problem:
http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/Articles/cdUsingMOs.html
Drag and Drop is just a glorified copy/paste and on that web page I found:
"If you just want to copy a managed object’s attributes,
Thanks to everyone who helped me out on this problem.
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I have 2 tableviews (A and B) in a window. Both use Core Data. A 3rd
tableview (in a drawer) has a complete list of items that I can selectively
Drag and Drop to tableview B. I have almost implemented the Drag and Drop,
but one step is missing. Tableview B has a Relationship to an item in
tableview
I'm getting a compiler warning message at the following line of code:
NSArray *selectedObjects = [[secondTableView dataSource] selectedObjects
];
The warning message is <'selectedObjects' not found in protocol>.
Can someone suggest what I need to do to remove the warning?
___
rm Pendley wrote:
>
> > On Fri, Nov 12, 2010 at 9:09 AM, Paul Johnson wrote:
> >
> >> I'm getting a compiler warning message at the following line of code:
> >>
> >> NSArray *selectedObjects = [[secondTableView dataSource]
> >> selectedOb
I'm getting the following error message when I try to Save after deleting
rows from a tableview:
*AppKit called
rmdir("/private/var/folders/FA/FAQBcfcBF9icyTATSBmeVE+++TI/TemporaryItems/(A
Document Being Saved By MyApp)"), it didn't return 0, and errno was set to
66.*
Do I need to implement a m
message: I also get the console message that I gave in my initial
post.)
I hope that explanation more clearly describes the problem I'm experiencing.
On Sat, Nov 13, 2010 at 12:50 PM, Jerry Krinock wrote:
>
> On 2010 Nov 13, at 09:21, Paul Johnson wrote:
>
> > If there is mo
e in my initial
post.)
I hope that explanation more clearly describes the problem I'm experiencing.
On Sat, Nov 13, 2010 at 12:50 PM, Jerry Krinock wrote:
>
> On 2010 Nov 13, at 09:21, Paul Johnson wrote:
>
> > If there is more I need to state to define the problem, please tell m
ms like a deficiency to me. Thanks a lot
for this very important piece of information!
On Sat, Nov 13, 2010 at 2:31 PM, Jerry Krinock wrote:
>
> On 2010 Nov 13, at 11:29, Paul Johnson wrote:
>
> >
> Oh, that's good because this error message is much easier to dea
>
> On 2010 Nov 13, at 13:24, Paul Johnson wrote:
>
> > So, what I understand is that there are some "race conditions" within
> Core Data that make it impossible to specify that a property be required and
> that it is necessary to include in one's code any ch
I want to obtain the value at a particular row and column in a table.
I implemented the datasource protocol method
tableView:objectValueForTableVColumn:row:
In this method I return [[self.arrangedObjects valueForKey:@"symbol"]
objectAtIndex:rowIndex].
Is there a way to solely use bindings to
I get a compiler warning message at the following line of code:
NSString *text = [NSString stringWithContentsOfFile:fullPath encoding:
NSUTF8StringEncoding error:&error];
The warning message is:
Class method '+stringWithContentsOfFile:encoding:Rf_error' not found
(return type defaults to 'id')
Thanks for your reply.
On Sat, Oct 27, 2012 at 5:37 PM, Nick Zitzmann wrote:
>
> On Oct 27, 2012, at 4:04 PM, Paul Johnson wrote:
>
> > I get a compiler warning message at the following line of code:
> >
> > NSString *text = [NSString stringWithContentsOfFile:fullPath en
string. I'm guessing you're using someone else's headers,
> framework, or project, possible where error is redefined for some purpose,
> possibly debugging or mapping to another set of code.
> --
> Gary L. Wade (Sent from my iPad)
> http://www.garywade.com/
>
I have an NSTableView in a drawer. I'm using Core Data and I'm trying
to have the drawer opening and showing the table rows sorted by the
first column.. but have been unsuccessful.
I can sort the table by clicking on column headers, but when the
drawer is opened the data is unsorted.
Obviously I
I have a slider, a stepper, and a textField that are synchronized using
bindings. I didn't write any code to do this, just used Xcode with its
Interface Builder. When the program starts I don't see the slider set to
the "Current" position I'd like and the textField doesn't show the
"Current" value
Quincy Morisses reply completely resolved the issue I was having with
bindings. I realized that we exchanged emails without copying this board. I
think Quincy's reply might be helpful to others, so I'm reposting his reply
on this board:
On May 28, 2013, at 16:25 , Paul Johnson wrot
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