Re: A question about core data.
Whoah, back up. It sounds like you've dived in over your depth. No, you don't have to use an array controller; you are free to modify the context as you wish. Using one of Cocoa's built-in controllers might well prove better for your task, it's hard to say. Fetch requests are what they say on the tin; they fetch objects. They do not insert them. I strongly advise you get yourself a decent book on Core Data and learn from that. On 10 Apr 2012, at 23:18, Michael Parchet wrote: > Hello, > > I have started a billing project with coco and core data. In my project, I > have a form that the user must fill to add a customer (for example) but it > seems that core data have only an array controller with a manage object > context to manage the core data database. Is it true ? > > In some language (such as java), I can send some sql query to the database. > such as (insert into Customeer etc..), I can also send a set of query > (transaction). > > On the apple website, in a guide, I have reed an information about fetch > request How it work ? Can the fetch request help me in my project ? > > Tanks for your help ? > > Best regards > > mparchet > > ___ > > 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/cocoadev%40mikeabdullah.net > > This email sent to cocoa...@mikeabdullah.net ___ 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
Re: A question about core data.
Hello Michael, On 11.04.2012, at 00:18, Michael Parchet wrote: > Hello, > > I have started a billing project with coco and core data. In my project, I > have a form that the user must fill to add a customer (for example) but it > seems that core data have only an array controller with a manage object > context to manage the core data database. Is it true ? no. You don't have to use a NSArrayController. > > In some language (such as java), I can send some sql query to the database. > such as (insert into Customeer etc..), I can also send a set of query > (transaction). > > On the apple website, in a guide, I have reed an information about fetch > request How it work ? Can the fetch request help me in my project ? CoreData is a complex technology, if you don't already read the Core Data Programming Guide https://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/CoreData/cdProgrammingGuide.html#//apple_ref/doc/uid/TP40001075 now is the time to do so … For example your example "insert a Customer": context is a NSManagedObjectContext, "Customer" your Customer entity NSManagedObject *customer = [NSEntityDescription insertNewObjectForEntityForName:@"Customer" inManagedObjectContext:context]; that's all. After that you use the customer. On context>>save: the new customer is written to disk (if you don't use a in memory persistent store…). A fetch request fetches as the name implies … CoreData is not a ORM-framework. sqlite is available as a persistent store type, but you can't access the database directly. Cheers, Felix ___ 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
Re: Networking and sleep
On 10 Apr 2012, at 4:41 PM, Lorenzo Thurman wrote: > I have an app which attempts to make an internet connection after receiving > an NSWorkspaceDidWake notification. Most of the time, the connection fails > with the error, "...internet connection appears to be offline (-1009)". My > guess is the the OS has not yet reinitialized networking before my app > attempts to connect. So I added a sleepForInterval:10 to make my app wait a > bit before connecting. This seems to work just fine, but question is: > Is there a more elegant way to handle this? Use the (C-level) SCNetworkReachability API to register for callbacks to notify you of loss and acquisition of network availability. Search for SCNetworkReachabilitySetCallback, and work outward from there. — F ___ 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
Re: Question about hebrew in textfields and textviews
On Apr 12, 2012, at 12:11 AM, Lee Ann Rucker wrote: > That's interesting, because the doc disagrees: > > "Text using NSNaturalTextAlignment is actually displayed using one of the > other alignments, depending on the natural alignment of the text’s script." You're looking at the reference for NSText, not NSTextField. As I said, I would probably find it surprising if, in an interface designed for an LTR language, entering RTL text suddenly changed the alignment of my text fields. That could seriously disrupt the readability of a form. (I must note that I don't write in any RTL languages.) Of course it should respect the writing direction, so the cursor would remain fixed at the left of the text field while typed characters were appended to the left. For a text view, however, I would definitely want RTL text to be aligned to the right. I would not be surprised if NSTextFieldCell configures its field editor with left/right alignment based on the UI direction rather than passing on the natural alignment. That might be worth testing. --Kyle Sluder ___ 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
Question about block, ARC, self, and reference counting.
I have a question about retain cycles with ARC and blocks.
I have the following code:
__weak MyViewController* controller = self;
[UIView animateWithDuration:.25 animations:^{
controller.alpha = 0;
}
completion:^(BOOL finsihed) {
[controller showState];
}];
-(void) showState {
self.textView.text = self.stateText;
}
I have a question about what happens when I use self in showState. DId i just
cause a reference counting issue where I now have an extra retain on self and
it's not going to be cleaned up? The WWDC video say to use weak pointers to
self in the block otherwise there could be retain cycle issues. This is an
example. The utility functions are actually quite larger and called from
multiple places. I'm not creating the strong refrence via a variable because
these blocks won't be called if self doesn't exist.
Scott
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Re: Question about block, ARC, self, and reference counting.
On Apr 12, 2012, at 12:04 PM, Scott Andrew wrote:
> I have a question about retain cycles with ARC and blocks.
>
> I have the following code:
>
>__weak MyViewController* controller = self;
>
>[UIView animateWithDuration:.25 animations:^{
>controller.alpha = 0;
>}
> completion:^(BOOL finsihed) {
>
> [controller showState];
> }];
>
>
>
> -(void) showState {
> self.textView.text = self.stateText;
> }
>
> I have a question about what happens when I use self in showState. DId i just
> cause a reference counting issue where I now have an extra retain on self and
> it's not going to be cleaned up?
No. The compiler looks at the code _in the block_ to know what the block
should retain. It doesn't (for this purpose) look inside the -showState
method. It can't even reliably know for sure that the call to -showState in
the block refers to that implementation of -showState. For example, this code
could all be called from a superclass which overrides -showState.
> The WWDC video say to use weak pointers to self in the block otherwise there
> could be retain cycle issues. This is an example. The utility functions are
> actually quite larger and called from multiple places. I'm not creating the
> strong refrence via a variable because these blocks won't be called if self
> doesn't exist.
For this case, you don't even have to worry about referencing self in the
blocks directly. You don't need to use the weak copy, controller. First, the
object is not itself retaining the blocks. So, if the blocks retain self,
that's still not a retain cycle. Second, the blocks will be disposed of when
the animation completes. So any reference they hold on self is released when
that happens.
Regards,
Ken
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Re: A question about core data.
mparchet, Let Core Data do the heavy lifting for you, that is what it is there for. If you use an array controller with your UI and set up bindings you can get away with out writing any code to make the base of your UI work. If I remember correctly you can send your own SQL queries but you can do _almost_ anything you need to do easier through Core Data so you should really question anytime you start to make your own queries. If you need some guidance on using Core Data with a financial related app check out my blog @ http:www.theMikeSwan/blog, I wrote a sample app for tracking expenses that may be of assistance to you. As for fetch requests, they are really useful for doing searches of the data. Above all keep in mind that Core Data is NOT a database, it is a persistence framework. If you think of it as a database you will just make your life harder. Hope this helps, Mike Swan ETCP Certified Entertainment Electrician http://www.theMikeSwan.com "The Ego is the little self that pretends to be the only self and speaks so loudly that the still, small voice of the Greater Self, whose whisperings come from within the Soul, are rarely heard - unless we learn to listen." On 12 Apr, 2012, at 2:23 AM, cocoa-dev-requ...@lists.apple.com wrote: > Message: 12 > Date: Wed, 11 Apr 2012 00:18:12 +0200 > From: Michael Parchet > To: Cocoa-dev@lists.apple.com > Subject: A question about core data. > Message-ID: <4f84b1a4.7020...@sunrise.ch> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Hello, > > I have started a billing project with coco and core data. In my project, > I have a form that the user must fill to add a customer (for example) > but it seems that core data have only an array controller with a manage > object context to manage the core data database. Is it true ? > > In some language (such as java), I can send some sql query to the > database. such as (insert into Customeer etc..), I can also send a set > of query (transaction). > > On the apple website, in a guide, I have reed an information about fetch > request How it work ? Can the fetch request help me in my project ? > > Tanks for your help ? > > Best regards > > mparchet ___ 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
iOS 5: iPod Library Access
Hello, all ... I'm trying to navigate the artists / albums / genres / etc. on a device. The documentation for this is usually easy to follow, but i'm finding it to be confusing regarding the concept of persistent IDs. I've a couple of questions: 1. What does and what does not have an MPMediaItemPropertyPersistentID? a. Does each artist have one? b. Does each album have one? c. Does each genre have one? d. Does each song / tv show / movie / audiobook / playlist / podcast / etc. have one? e. Are these IDs unique across all collections i.e. will a specific album have the same persistent ID of, say, another artist or a song from another album? 2. Is it possible to find a particular artist / album / genre / etc. given only it's MPMediaItemPropertyPersistentID (assuming 1(e) is true)? If so, how? I see lots of examples for finding the albums of an artist, etc. given the artist name, album name, etc., but what if two artists have the same name, or different artists used the same title for their album? I'd like to use the MPMediaItemPropertyPersistentID, if possible, to make each search unambiguous. If this is possible, could someone point me at some example code that uses the MPMediaItemPropertyPersistentID to find a specific item? Regards, John, appreciative ___ 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
Re: Question about hebrew in textfields and textviews
On Apr 12, 2012, at 8:12 AM, Kyle Sluder wrote: > On Apr 12, 2012, at 12:11 AM, Lee Ann Rucker wrote: > >> That's interesting, because the doc disagrees: >> >> "Text using NSNaturalTextAlignment is actually displayed using one of the >> other alignments, depending on the natural alignment of the text’s script." > > You're looking at the reference for NSText, not NSTextField. OK, there's a [NSControl setAlignment:] that NSTextField inherits, and it takes the same values. > > As I said, I would probably find it surprising if, in an interface designed > for an LTR language, entering RTL text suddenly changed the alignment of my > text fields. That could seriously disrupt the readability of a form. (I must > note that I don't write in any RTL languages.) > > Of course it should respect the writing direction, so the cursor would remain > fixed at the left of the text field while typed characters were appended to > the left. > > For a text view, however, I would definitely want RTL text to be aligned to > the right. > > I would not be surprised if NSTextFieldCell configures its field editor with > left/right alignment based on the UI direction rather than passing on the > natural alignment. That might be worth testing. > > --Kyle Sluder ___ 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
Re: Question about block, ARC, self, and reference counting.
Cool. Thank you that was sort of my thought. Then went and watched the WWDC
video and went into a bit of a panic.
Scott
On Apr 12, 2012, at 11:18 AM, Ken Thomases wrote:
> On Apr 12, 2012, at 12:04 PM, Scott Andrew wrote:
>
>> I have a question about retain cycles with ARC and blocks.
>>
>> I have the following code:
>>
>> __weak MyViewController* controller = self;
>>
>> [UIView animateWithDuration:.25 animations:^{
>> controller.alpha = 0;
>> }
>>completion:^(BOOL finsihed) {
>>
>> [controller showState];
>>}];
>>
>>
>>
>> -(void) showState {
>> self.textView.text = self.stateText;
>> }
>>
>> I have a question about what happens when I use self in showState. DId i
>> just cause a reference counting issue where I now have an extra retain on
>> self and it's not going to be cleaned up?
>
> No. The compiler looks at the code _in the block_ to know what the block
> should retain. It doesn't (for this purpose) look inside the -showState
> method. It can't even reliably know for sure that the call to -showState in
> the block refers to that implementation of -showState. For example, this
> code could all be called from a superclass which overrides -showState.
>
>> The WWDC video say to use weak pointers to self in the block otherwise there
>> could be retain cycle issues. This is an example. The utility functions are
>> actually quite larger and called from multiple places. I'm not creating the
>> strong refrence via a variable because these blocks won't be called if self
>> doesn't exist.
>
> For this case, you don't even have to worry about referencing self in the
> blocks directly. You don't need to use the weak copy, controller. First,
> the object is not itself retaining the blocks. So, if the blocks retain
> self, that's still not a retain cycle. Second, the blocks will be disposed
> of when the animation completes. So any reference they hold on self is
> released when that happens.
>
> Regards,
> Ken
>
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Watching a variable in Xcode 4.3
I've got the weirdest bug. I have a matrix of views (iOS development, by the way) and all of them work correctly except for the object at 0, 0. The 0,0 view is initialised correctly, but loses its settings at some point (although methods that don't rely on those settings still work - the view hasn't been deallocated). There is nothing in my code designed to alter these settings after initialisation. Clearly there's a bug - in order to hunt the bug down I thought it'd be a good idea to set a break point when one of the variables changes and then see what made the change. My question is, how do I do this in Xcode 4.3? I'm sure I've done this in the past - but I can't remember how! ___ 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
Re: Convert to Objective-C ARC Syntax Error
Dave - I am not linking directly to any of the files causing the errors listed in my original email. I did a search on "#import <" and got: #import #import #import #import #import #import #import / #import #import #import #import #import #import On Apr 1, 2012, at 7:16 PM, Dave Zarzycki wrote: > Brad, > > This looks similar to Radar 10434539. Let me know if this works: simplify the > header includes in your code to just #import and just link > against Quartz. If your code is already doing this, then let us know. > > Thanks! > > davez > > ___ 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
iOS 5: iPod Library Access, pt 2
Hello all, Is an _artist_ an MPMediaItemCollection of albums, or an MPMediaItem / Entity? If the later, how do I get it's MPMediaItemPropertyPersistentID? Is an _album_ an MPMediaItemCollection of songs, or an MPMediaItem / Entity? If the later, how do I get it's MPMediaItemPropertyPersistentID? ... and do the above answers also apply to movies, tv shows, podcasts, audiobooks, genres, etc.? Regards, John ___ 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
Re: Watching a variable in Xcode 4.3
You can have an if or case statement where you have a breakpoint set for where
the condition changes.
I used to make a method a long time ago called, get this, -(void)breakpoint,
and have a BP on it, but that's a little overkill.
switch (myVar) {
case (AllIsWell):
break;
case (AllIsNotWell):
NSLog(@"Breakpoint: check your var");
NSLog(@"MyVarValue: ,%@", thatVarIWantToSee);
// put a BP below
break;
}
In the cases, set up the condition you are looking for that will catch the
condition you are looking for. I'm sure you'll need to modify that little
block a bit, but it should spit out the value of your var after the condition
is triggered.
Hope this helps.
On Apr 12, 2012, at 3:02 PM, Pascal Harris wrote:
> I've got the weirdest bug. I have a matrix of views (iOS development, by the
> way) and all of them work correctly except for the object at 0, 0.
>
> The 0,0 view is initialised correctly, but loses its settings at some point
> (although methods that don't rely on those settings still work - the view
> hasn't been deallocated).
>
> There is nothing in my code designed to alter these settings after
> initialisation. Clearly there's a bug - in order to hunt the bug down I
> thought it'd be a good idea to set a break point when one of the variables
> changes and then see what made the change. My question is, how do I do this
> in Xcode 4.3? I'm sure I've done this in the past - but I can't remember how!
> ___
>
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Re: Watching a variable in Xcode 4.3
http://stackoverflow.com/questions/5632477/where-is-the-expression-window-in-xcode-4 might help. On Apr 13, 2012, at 3:02 AM, Pascal Harris <45rpmli...@googlemail.com> wrote: > I've got the weirdest bug. I have a matrix of views (iOS development, by the > way) and all of them work correctly except for the object at 0, 0. > > The 0,0 view is initialised correctly, but loses its settings at some point > (although methods that don't rely on those settings still work - the view > hasn't been deallocated). > > There is nothing in my code designed to alter these settings after > initialisation. Clearly there's a bug - in order to hunt the bug down I > thought it'd be a good idea to set a break point when one of the variables > changes and then see what made the change. My question is, how do I do this > in Xcode 4.3? I'm sure I've done this in the past - but I can't remember how! > ___ > > 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/ev%40monoceroi.com > > This email sent to e...@monoceroi.com ___ 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
Views-based table drag and drop
Hi, My app has a views-based table with an NSTableCellView subclass. The represented object implements the NSPasteboardReading, NSPasteboardWriting, and NSCoding protocols. All the hooks are in place for drag and drop, but I need some conceptual help to figure how to implement it properly. I would like to be able to drag both within the document window to move rows, and between document windows to copy rows. For dragging within the same document it seemed easiest (at first) to just use tableView:writeRowsWithIndexes:toPasteboard: to store the NSIndexSet of the selected rows, and then to use that info to move the rows in the document's NSMutableArray. But in doing so, I found that draggingImageComponents is no longer called on my NSTableCellView subclass. And of course this isn't very useful information for dragging objects between documents. So obviously I need to use tableView:pasteboardWriterForRow:. But I don't quite understand how this behaves internally, or what data I should be returning. So I have a few questions. First, what should I be returning in pasteboardPropertyListForType:? At the moment I'm returning [NSKeyedArchiver archivedDataWithRootObject:self]. Since with this option the only data in the pasteboard is the archived object, how can I use that to delete the rows from their original positions before inserting them at the drop location? (I'm only dropping above rows, not on them.) Could I instead return the object pointer in pasteboardPropertyListForType: so that I have direct references to the original row objects? Should I use the NSTableView's selectedRowIndexes to delete the original rows, then unarchive and insert the new instances? Does any of this happen automagically, just by virtue of having NSPasteboardReading implemented? Should I be using an NSArrayController to save myself the trouble? Unfortunately the TableViewPlayground sample code isn't very helpful, because it doesn't demonstrate dragging custom class objects around, just file urls. Any and all guidance is much appreciated, especially if you can provide sample code for exactly this kind of situation. -- Scott Lahteine Thinkyhead Software ___ 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
AVAssetWriterInputPixelBufferAdaptor on IOS attempting to write images to a video
HI All, I am attempting to write out an image as a movie well, it will be an array of images but to start with I can't even get one in there. Any help diagnosing my problem would be greatly appreciated. Here is what I am doing: //here is the image NSString *path = [NSString stringWithFormat:@"%@/images/0.png",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]]; NSData *imageData = [[[NSData alloc] initWithContentsOfFile:path] autorelease]; UIImage *uiimage = [UIImage imageWithData:imageData]; //configure the path for the output video NSString *videoPath = [NSString stringWithFormat:@"%@/videos/currentVideo.mov",[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject]]; NSError *error = nil; //create the writer AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL:[NSURL fileURLWithPath:videoPath] fileType:AVFileTypeQuickTimeMovie error:&error]; NSParameterAssert(videoWriter); //setup the properties for the input NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:AVVideoCodecH264, AVVideoCodecKey,[NSNumber numberWithInt:640], AVVideoWidthKey,[NSNumber numberWithInt:960], AVVideoHeightKey,nil]; //create the input AVAssetWriterInput* writerInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain]; NSParameterAssert(writerInput); NSParameterAssert([videoWriter canAddInput:writerInput]); [videoWriter addInput:writerInput]; //configure the properties for the buffer and create the bufferAdaptor NSDictionary *bufferAttributes = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:kCVPixelFormatType_32BGRA], kCVPixelBufferPixelFormatTypeKey, nil]; AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:writerInput sourcePixelBufferAttributes:bufferAttributes]; //create the pixel buffer CVPixelBufferRef pixelBuffer = NULL; CGImageRef cgImage = CGImageCreateCopy([uiimage CGImage]); CFDataRef image = CGDataProviderCopyData(CGImageGetDataProvider(cgImage)); int status = CVPixelBufferCreateWithBytes(NULL, 960, 640, kCVPixelFormatType_32BGRA, (void*)CFDataGetBytePtr(image), CGImageGetBytesPerRow(cgImage), NULL, 0, NULL, &pixelBuffer); //write it out [adaptor appendPixelBuffer:pixelBuffer withPresentationTime:CMTimeMake(2, 60)]; It crashes here reporting *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '*** -[AVAssetWriterInputPixelBufferAdaptor appendPixelBuffer:withPresentationTime:] Cannot call method when status is 0' ___ 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
Re: Networking and sleep
On Apr 12, 2012, at 9:33 AM, Fritz Anderson wrote: > On 10 Apr 2012, at 4:41 PM, Lorenzo Thurman wrote: > >> I have an app which attempts to make an internet connection after receiving >> an NSWorkspaceDidWake notification. Most of the time, the connection fails >> with the error, "...internet connection appears to be offline (-1009)". My >> guess is the the OS has not yet reinitialized networking before my app >> attempts to connect. So I added a sleepForInterval:10 to make my app wait a >> bit before connecting. This seems to work just fine, but question is: >> Is there a more elegant way to handle this? > > Use the (C-level) SCNetworkReachability API to register for callbacks to > notify you of loss and acquisition of network availability. Search for > SCNetworkReachabilitySetCallback, and work outward from there. > > — F > Great, I'll do that. Thanks! "...Business! Mankind was my business. The common welfare was my business; charity, mercy, forbearance, and benevolence, were all my business. The dealings of my trade were but a drop of water in the comprehensive ocean of my business!" Marly's ghost - A Christmas Carol Lorenzo Thurman lore...@thethurmans.com ___ 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
