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  • UITextView text disappear

    - by user153412
    Hi, i create an uitextview dynamically then i write my text into it. Sometime, when i create the uitextview, the cursor disappear and i see no text in it. If i run the application again, i can see the text inside the textview that i've created before. I've tried to set the cursor position to zero or scroll the text to the top but it doesn't work... Any suggestion? Here is a screen capture. You can see the gray uitextview, the keyboard (the textview is the firstresponder) but no cursor or text. http://yfrog.com/hqschermata20100325a11213p PS: i'm sorry for my bad english.

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  • Intercept UITableView scroll touches

    - by Jonesy
    Is it possible to control when the UITableView scrolls in my own code. I am trying to get behaviour where a vertical swipe scrolls and a horizontal swipe gets passed through to my code (of which there are many example) BUT I want a DIAGONAL swipe to do nothing, i.e the UITableView should not even begin scrolling. I tried catching it in here - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView but the scrollView.contentOffset.x is always 0 so I cannot detect a horizontal movement. I also tried subclassing UITableView and implementing - (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event - (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event etc.. but the UITableView (and I guess it's parent UIScrollView) start to scroll before the touches are notified? To re-iterate, I want the UITableView scrolling to be locked if a diagonal swipe is made, but to scroll vertically normally. (This behaviour can be seen in Tweetie(Twitter) for the iPhone) Thanks for any help!

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  • Core Data iPhone how often should I call [managedObjectContext save:&error] when doing 50k record in

    - by jamone
    I will be doing an occiasional import from XML into core data. I have around 50k entities that will be added. My question is how often should I call [managedObjectContext save:&error]. For every new entity added, or every x entities, or just at the end of the 50k import? I currently am calling it for each entity and tried only doing it for around every 10k and import speed went up drastically but after the first 30k it would crash with: *** Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <NSCFSet: 0x13e760> was mutated while being enumerated.' Before I spend too much time trying to diagnose what is going on there I figured I'd check if its ok to not call save on every entity? Is the # of entities before calling save limited by the amount of memory those entities are using?

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  • Can dummy objects be simulated on iphone?

    - by Mike
    I come from 3D animation and one of the basic things all 3D software have is the ability to create dummy objects. Dummy objects can be used to groups objects that can be rotated, moved or scaled together around a specific anchor point. This is the idea of what I am asking. Obviously we can have fake dummies by using a view and put other views as subviews, but this has problems as the view receives clicks and sometimes you don't want it to do so. You cannot change the anchorpoint of a view too. So, the dummies as I ask have, at least, these properties: adjustable anchor point it is not clickable it is totally invisible (cannot be rendered). any scale, rotation and translation of a dummy are propagated to the grouped objects considering the dummy's anchor point. it is totally animatable. Can this be simulated on iPhone? Is there any object that can be created to simulate this? thanks.

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  • UIButton doesn't appear on UIToolbar

    - by Sheehan Alam
    I have a UIToolbar where I have dragged a UIButton. When I set the button properties to Custom, and assign an image (or background image) the graphics don't appear. However, when I give it a custom text, the text will appear. Why is it that the images don't appear?

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  • iPhone - move above buttons

    - by Mike
    I have a video at 320x240 on the middle of the screen area. Around this video, several buttons that will call different actions. When the MPMoviePlayerController is fired and the movie starts playing the buttons are behind the video and I cannot click them. I see them but they are not clickable. I think the video window is covering the whole area. How can I solve that?

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  • iPhone - move above buttons

    - by Mike
    I have a video at 320x240 on the middle of the screen area. Around this video, several buttons that will call different actions. When the MPMoviePlayerController is fired and the movie starts playing the buttons are behind the video and I cannot click them. I see them but they are not clickable. I think the video window is covering the whole area. How can I solve that?

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  • EXC_BAD_ACCESS due to PostNotification

    - by Sagar Mane
    Hello All, I am facing one issue regarding one module let me clear the flow for the same. I have one customized UITableviewCell. When I am getting some new information I am posting one notification [[NSNotificationCenter defaultCenter] postNotificationName:KGotSomething object:nil userInfo:message]; In view where I am maintaining the table I am initiating a customized cell - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { cell= [[CustomCell alloc] initWithFrame: reuseIdentifier:identifier document:doc]; return cell; } now in customcell.mm - (id)initWithFrame:(CGRect)frame reuseIdentifier:(NSString *)reuseIdentifier { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(GotSomething:) name:KGotSomething object:nil]; } and in dealloc - (void)dealloc { [[NSNotificationCenter defaultCenter] removeObserver:self name:KGotSomething object:nil]; } Now my app crashes due to this notification and dealloc is never get called. Can you guys help me, how to get this working or anything I m doing wrong over here... Thanks, Sagar

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  • How to compare two times in milliseconds precision?

    - by Marcos Issler
    I have a subtitle text file that works with standart srt format 00:00:00,000 Hour, minutes, seconds, milliseconds. I want to create a timer to update the subtitle screen and check the current time to know what subtitle show on screen. Which is the best to use? NSTimeInterval, NSDate? I think the best is to convert all to times to milliseconds number and compare. But NSTimeInterval works with seconds, not milliseconds. Some clue? Marcos

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  • iphone - compiler conditionals

    - by Mike
    Two questions: this code #ifdef __IPHONE_3_0 // iPhone 3.0 specific stuff #else // iPhone 2.2 specific stuff #endif compiles specific codes for specific versions of the iPhone. How could this be transformed to compile for a range of devices? For example: if iphone version < 3.1 or if version = 3.2, and so one... 2) where do I get a list of all conditionals allowed by Xcode? thanks for any help.

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  • Collection <NSCFSet: 0x1b0b30> was mutated while being enumerated. How to determine which set?

    - by jamone
    I'm doing a bunch of core data inserts and after 20k or so inserts with saves every 1-2k I get this error: Terminating app due to uncaught exception 'NSGenericException', reason: '*** Collection <NSCFSet: 0x1b0b30> was mutated while being enumerated.' I'm trying to figure out which NSSet is causing this. I've done a search and the only NSSets in my code are the autogenerated ones that handle the Core Data relationships. I'm using NSXMLParser and for each element found creating a new entity (if a matching one doesn't already exist). So I will create a state entity and then populate all the city entities and then do a save. This means that a state's NSSet *cities is getting added to but I don't see why you can't do that.

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  • iPhone: Execute code after animation of UIDeviceOrientation change finishes

    - by carloe
    Not sure if I can explain this correctly, but I am trying to execute a method device orientation animation finishes. Right now I have [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil];, but that triggers instantly. Is there a way to have it call didRotate after the view rotation animation is completed? Thanks!

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  • Using Mapping Models to migrate between Core Data Object Models

    - by westsider
    I have a fairly simply scheme. Essentially, Run <-- Data (where a Run holds a data, e.g., Temperature, sampled from some sort of sensor). Now, it seems that sensors can have more than one measurement (e.g., Temperature and Humidity). So, a single Run could have multiple data samples. Hence, Run <-- Sample and Sample <-- Data. (And for simplicity I am leaving Run <-- Data in place, for now.) If I create a new mapping model, then things generally work - except that no new Samples are created, no relationships are established between Runs and Samples nor between Samples and Datas. I am trying to get mapping model to migrate my model but even the slightest change to the generated mapping model results in Cocoa error 134110. For example, if I take the "Sample" mapping (which has no Source) and set its Source to 'Run' (so that I can set Sample's inverse relationship 'run' appropriately) then the mapping changes its name to "RunToSample". There are two relationships handled in this mapping: data and run. The data property gets set automatically to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "DataToData", $source.dataSet) Following this example, I set the run property to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToRun", $source) Similarly, I set the 'sample' property mapping in RunToRun to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToSample", $source) and the 'sample' property in DataToData to FUNCTION($manager, "destinationInstancesForEntityMappingNamed:sourceInstances:" , "RunToSample", $source.run) So, what, I wonder, is going wrong? I have tried various permutations, such as leaving the 'inverse' relationships unspecified. But I continue to get the same error (134110) regardless. I imagine that this is a lot easier than it seems and that I am missing some fundamental but minor piece. I have also tried subclassing NSEntityMigrationPolicy and overriding -createDestinationInstancesForSourceInstance: but these efforts have met with much the same results. Thanks in advance for any pointers or (relevant :-) advice.

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  • popViewController does not autorotate back to allowed orientation

    - by JoeGaggler
    I have two UIViewControllers, "A" and "B", where "A" overrides the shouldAutorotateToInterfaceOrientation to return YES for UIInterfaceOrientationPortrait, and "B" returns YES for all orientations. In my example "A" is the root navigation view controller, and I then use pushViewController for "B". After that I rotate the device into landscape, which successfully autorotates "B", then I pop "B" (back button or via popViewController) to return to "A". When targetting iPhone OS 3.1.3, "A" returns to the portrait orientation as expected. When targetting iPhone OS 3.2, I have two side-effects: "A" is displayed in landscape. The navigation bar does not update even though "A" is now displayed. The navigation bar still shows the items for "B". Only after trying to go back/pop one more time will the navigation bar animate to show the items for "A". If I instead attempt to push "B" again and go back, I have to pop twice before the navigation bar animates to show the items for "A". During these "intermediate pops" the view for "A" remains displayed. While researching this issue, I have seen other answers suggesting performing the rotation manually ([UIDevice setOrientation] or via a tranformation), however this does not help understand what the problem is, especially why it behaves differently between the two OS's. So my question is: must all of my UIViewControllers on the UINavigationController stack support exactly the same orientations going forward? And if not, then is there something that I need to do to make it behave as it did for OS 3.1.3?

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  • Cocoa Touch UITableView Alphabetical '#' Match All Unmatched

    - by Kevin Sylvestre
    I have a UITableView containing names that I would like to group (and sort) by the first letter (similar to the Address Book application). I am currently able to match any section ('A'-'Z') using: // Sections is an array of strings "{search}" and "A" to "Z" and "#". NSString *pattern = [self.sections objectAtIndex:section]; NSPredicate *predicate = nil; // Ignore search pattern. if ([pattern isEqualToString:@"{search}"]) return nil; // Non-Alpha and Non-Diacritic-Alpha (?). if ([pattern isEqualToString:@"#"]); // Default case (use case and diacritic insensitivity). if (!predicate) predicate = [NSPredicate predicateWithFormat:@"name beginswith[cd] %@", pattern]; // Return filtered results. return [self.friends filteredArrayUsingPredicate:predicate]; However, matching for the '#' eludes me. I tried constructing a REGEX match using: [NSPredicate predicateWithFormat:@"name matches '[^a-zA-Z].*'"]; But this fails for diacritic-alpha (duplicate rows appear). Any ideas would be greatly appreciated! Thanks.

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  • CGContext rotation

    - by kasperjj
    I have a 100x100 pixel image that I want to draw at various angles rotated around the center of the image. The following code works, but rotates around the original origo of the coordinate system (upper left hand corner) and not the translated location. Thus the image is not rotated around itself but around the upper left corner of the screen. CGContextRef context = UIGraphicsGetCurrentContext(); CGContextTranslateCTM(context, -50, -50); CGContextRotateCTM (context, 0.3); CGContextTranslateCTM(context,768/2,1024/2); [image drawAtPoint:CGPointMake(0,0)]; I tried doing the same using CGAffineTransform, but got the same results.

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  • Editable table view cell

    - by Koning Baard XIV
    I am creating an application. I have to implement a bookmark feature, and adding one should be similar to this: I want editable UITableViewCells for text input. I was wondering if there is an easier way then embedding a UITextField into a UITableViewCell. And if not, can someone explain how I can use the UITextField inside it? Thanks

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  • How do I reset the scale/zoom of a web app on an orientation change on the iPhone?

    - by Elisabeth
    I'm having the same problem that a couple of others have had with getting the correct behavior in a web app on an orientation change, and there doesn't seem to be an obvious solution - I've seen this question asked a couple of times on Stack Overflow and no one's yet been able to answer it. When I start the app in portrait mode, it works fine. Then I rotate into landscape and it's scaled up. To get it to scale correctly for the landscape mode I have to double tap on something twice, first to zoom all the way in (the normal double tap behavior) and again to zoom all the way out (again, the normal double tap behavior). When it zooms out, it zooms out to the correct NEW scale for landscape mode. Switching back to portrait seems to work more consistently; that is, it handles the zoom so that the scale is correct when the orientation changes back to portrait. I am trying to figure out if this is a bug? or if this is something that can be fixed with Javascript? With the viewport meta content, I am setting the initial-scale to 1.0 and I am NOT setting minimum or maximum scale (nor do I want to). I am setting the width to device-width. Any ideas? I know a lot of people would be grateful to have a solution as it seems to be a persistent problem. Thank you!

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  • XCode: Block support disabled

    - by Nic Hubbard
    XCode is warning me that Blocks support is disabled, and to compile with -fblocks. I have added -fblocks to the Other Linker Flags section. But compiling again gives me the same error. I am using iOS4 GM. Any ideas on how to fix this?

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  • Automatically created NSManagedObject subclasses don't use ARC

    - by Jordan
    My project is ARC enabled (the build settings have Objective-C Reference Counting set to YES). There are no file exceptions to this, it is enabled project wide. (Latest stable version of Xcode). When I create an NSManagedObject subclass via File New for a Core Data entity, the generated header uses the following in its property declarations: @property (nonatomic, retain) But 'retain' is not ARC!! Is this a bug, or is there something I'm missing or not understanding? There are no build warnings - if this is a bug though, how can I remedy it?

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