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  • @property, ok in this situation?

    - by fuzzygoat
    I am still finding my feet with objective-c and was wondering if its acceptable to use @property on the two objects below. #import <UIKit/UIKit.h> #import <MapKit/MapKit.h> @interface MapViewController : UIViewController <MKMapViewDelegate, CLLocationManagerDelegate> { CLLocationManager *locationManager; IBOutlet MKMapView *googleMapView; } @property(nonatomic, retain) CLLocationManager *locationManager; @property(nonatomic, retain) MKMapView *googleMapView; @end One of my reasons for using them is so that I can use the setters in my viewDidUnload, I seem to be using @property a lot and was just wondering if the use in this situation is acceptable? -(void)viewDidUnload { [self setLocationManager:nil]; [self setGoogleMapView:nil]; [super viewDidUnload]; } much appreciated Gary

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  • imagePickerController won't return camera photo. Will return album photo.

    - by yesimarobot
    i'm loading photos from my library just fine, but photos coming from he camera don't display in the imageView. I've used CFShow(info) and the data from the camera is not nil... - (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { UIImage *image = [info objectForKey:@"UIImagePickerControllerEditedImage"]; [self.imageView setImage:image]; [self dismissModalViewControllerAnimated:YES]; [picker release]; }

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  • can we use timer in taps??

    - by user317149
    i m working on app,in which user taps to shoot bullets, i want user to restrict their taps, like he next tap or touch should be counted after 1 or 3 seconds, is their any snippet,i can use to rtestrict user for continiously tapoping/touch? quick reply is aleways appreciated/ regards shishir

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  • Stop lazy-loading images?

    - by Greg
    Here's the issue – I followed along with the Apple lazy-load image sample code to handle my graphical tables. It works great. However, my lazy-load image tables are being stacked within a navigation controller so that you can move in and out of menus. While all this works, I'm getting a persistent crash when I move into a table then move immediately back out of it using the "back" button. This appears to be a result of the network connections loading content not being closed properly, or calling back to their released delegates. Now, I've tried working through this and carefully setting all delegates to nil and calling close on all open network connections before releasing a menu. However, I'm still getting the error. Also – short posting my entire application code into this post, I can't really post a specific code snippet that illustrates this situation. I wonder if anyone has ideas for tasks that I may be missing? Do I need to do anything to close a network connection other than closing it and setting it to nil? Also, I'm new to debugging tools – can anyone suggest a good tool to use to watch network connections and see what's causing them to fail? Thanks!

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  • How to fit more operations to tab bar + navigation bar?

    - by Henry
    I want to use Tabview for my whole app. However in certain view, I have more operations than I can fit in the navigator bar. So I thought of using Toolbar but toolbar should be located at the bottom, right? Toolbar looks weird to be on top of the tabview, and hiding tabview for one view doesn't really make sense. I guess I can go with more buttons in the main view, but any other alternatives? What can one use to add more operation(s) to tabview? Thanks

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  • determine if point on screen is within specific UIScrollView subview

    - by Kyle
    A UIScrollView contains several UIView objects; how can I tell if a point on the screen not generated by touches is within a specific subview of the scrollview? so far atempts to determine if the point is in the subview always return the first subview in the subviews array of the parent scrollview, ie the coordinates are relative to the scrollview, not the window. Here's what I tried (edited) -(UIView *)viewVisibleInScrollView { CGPoint point = CGPointMake(512, 384); for (UIView *myView in theScrollView.subviews) { if(CGRectContainsPoint([myView frame], point)) { NSLog(@"In View"); return myView; } } return nil; }

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  • Using a Data Management Singleton

    - by Dan Ray
    Here's my singleton code (pretty much boilerplate): @interface DataManager : NSObject { NSMutableArray *eventList; } @property (nonatomic, retain) NSMutableArray *eventList; +(DataManager*)sharedDataManager; @end And then the .m: #import "DataManager.h" static DataManager *singletonDataManager = nil; @implementation DataManager @synthesize eventList; +(DataManager*)sharedDataManager { @synchronized(self) { if (!singletonDataManager) { singletonDataManager = [[DataManager alloc] init]; } } NSLog(@"Pulling a copy of shared manager."); return singletonDataManager; } So then in my AppDelegate, I load some stuff before launching my first view: NSMutableArray *eventList = [DataManager sharedDataManager].eventList; .... NSLog(@"Adding event %@ to eventList", event.title); [eventList addObject:event]; NSLog(@"eventList now has %d members", [eventList count]); [event release]; As you can see, I've peppered the code with NSLog love notes to myself. The output to the Log reads like: 2010-05-10 09:08:53.355 MyApp[2037:207] Adding event Woofstock Music Festival to eventList 2010-05-10 09:08:53.355 MyApp[2037:207] eventList now has 0 members 2010-05-10 09:08:53.411 MyApp[2037:207] Adding event Test Event for Staging to eventList 2010-05-10 09:08:53.411 MyApp[2037:207] eventList now has 0 members 2010-05-10 09:08:53.467 MyApp[2037:207] Adding event Montgomery Event to eventList 2010-05-10 09:08:53.467 MyApp[2037:207] eventList now has 0 members 2010-05-10 09:08:53.524 MyApp[2037:207] Adding event Alamance County Event For June to eventList 2010-05-10 09:08:53.524 MyApp[2037:207] eventList now has 0 members ... What gives? I have no errors getting to my eventList NSMutableArray. But I addObject: fails silently?

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  • How to detect touch over a UIView when touched over a UIButton?

    - by jglievano
    I'm using (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event, and (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event to handle some dragging on a UIView. This UIView however have some UIButtons as subviews of the UIView and when the user touches over a UIButton (which are also over the UIView) the touches methods aren't called. I need the touch methods in the UIView to be called at all times and still have the UIButtons working, how can I achieve this?

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  • Problem implementing a UITableView that allows for multiple row selections

    - by wgpubs
    This - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath]; int cardNumber = indexPath.row + 1; if (cell.accessoryType == UITableViewCellAccessoryNone) { cell.accessoryType = UITableViewCellAccessoryCheckmark; if (![self.winningNumbers containsObject:[NSNumber numberWithInt:cardNumber]]) [self.winningNumbers addObject:[NSNumber numberWithInt:cardNumber]]; } else { cell.accessoryType = UITableViewCellAccessoryNone; if ([self.winningNumbers containsObject:[NSNumber numberWithInt:cardNumber]]) [self.winningNumbers removeObject:[NSNumber numberWithInt:cardNumber]]; } [tableView deselectRowAtIndexPath:indexPath animated:YES]; } ... modifies the "accessoryType" of every 6th cell INSTEAD of just the selected row. What am I missing? Thanks

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  • Getting Values from fetched Core Data

    - by user571905
    Hi there, Thanks to the wonderful people on this forum, I have overcome most of my Core Data woes. However one persists, and I'm certain it is a simple fix. I have a recipe app that parses an XML doc on load and puts the data in Core Data. Then I search that Core Data for particular recipes, ingredients, etc. Everything is working with one exception... I cannot do anything with the data I retrieve. For example, I search the core data for "eggplant" and get this at the end of the process: "<RecipeData: 0x6112a40> (entity: RecipeData; id: 0x6113880 <x-coredata:///RecipeData/tCDE9A0EE-DA3F-4BD0-AEF8-3C038586991D4> ; data: {\n ingredients = \"Eggplant|Cheese|Tomatoes|\";\n name = \"Eggplant Parm\";\n time = 40;\n})" How do I get the info out of there? I tried looping through, but that causes the app to crash: for (NSString* key in selectedRecipe) { id value = [selectedRecipe objectForKey:key]; NSLog(@"IN LOOP: %@", value); } Any suggestions? Thank you for your time.

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  • SQLITE crash when no data present in table

    - by johnblack45
    Hey, Im having a problem with my app that causes it to crash when no data is present in the table when using a table view. I have tested my code and it works fine as long as there is data present but i need it to work when there is no data present. -(void)initialiseTableData { NSMutableArray *array = [[NSMutableArray alloc]init]; sqlite3 *db = [iCaddyAppDelegate getNewDBConnection]; sqlite3_stmt *statement; const char *sql = "select courseId, courseName, totalPar, totalyardage, holePars, holeYardages, holeStrokeIndexs from Course"; if(sqlite3_prepare_v2(db, sql, -1, &statement, NULL)!= SQLITE_OK) { NSAssert1(0,@"Error preparing statement",sqlite3_errmsg(db)); sqlite3_close(db); } else { while (sqlite3_step(statement) == SQLITE_ROW) { Course *temp = [[Course alloc]init]; temp.courseId = sqlite3_column_int(statement,0); temp.courseName = [NSString stringWithFormat:@"%s",(char*)sqlite3_column_text(statement,1)]; temp.totalPar =sqlite3_column_int(statement,2); temp.totalYardage =sqlite3_column_int(statement,3); NSString tempHolePars = [NSString stringWithFormat:@"%s",(char)sqlite3_column_text(statement,4)]; NSString tempHoleYardages = [NSString stringWithFormat:@"%s",(char)sqlite3_column_text(statement,5)]; NSString tempHoleStrokeIndexes = [NSString stringWithFormat:@"%s",(char)sqlite3_column_text(statement,6)]; NSArray *temp1 = [tempHolePars componentsSeparatedByString:@":"]; NSArray *temp2 = [tempHoleYardages componentsSeparatedByString:@":"]; NSArray *temp3 = [tempHoleStrokeIndexes componentsSeparatedByString:@":"]; for(int i = 0; i<=17; i++) { NSString *temp1String = [temp1 objectAtIndex:i]; [temp.holePars insertObject:temp1String atIndex:i]; NSString *temp2String = [temp2 objectAtIndex:i]; [temp.holeYardages insertObject:temp2String atIndex:i]; NSString *temp3String = [temp3 objectAtIndex:i]; [temp.holeStrokeIndexes insertObject:temp3String atIndex:i]; } [array addObject:temp]; } self.list = array; [self.table reloadData]; } }

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  • Smooth arcs in quartz?

    - by ciukes
    While developing a rounded rectangle widget I encountered the following problem: path built with arcs looks ugly when stroked. How to make the stroked arcs look nicer?

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  • Creating 1 page PDF of iPad Screen view - How?

    - by user314695
    Hi All, I've asked this question on a couple other forums and have had zero response, so I'm hoping someone here can help point me in the right direction. I have a pretty simple one screen application for my work. It's basically just a recreation of a 1 page paper report that has a company logo, some labels, a few text boxes and a scroll text box for the report. I need to be able to fill out the report then click a button to save it in a graphical form so I can fax, print or email it later. Currently, I'm just programmatically taking a screen capture and saving it to the photo's library (default for screen capture). Then I can just email it from photo's. This works ok, but is kind of hacky, at best. I've read through the new iPad 3.2 guide for creating PDF's (apparently it's supposed to be much easier than before) but I can not get it to work and I've spent countless hours on it now. I'm hoping someone has the answer for me. Alternatively, if anyone knows how I can redirect where the screen capture is stored (default is in the photo album) then maybe I can make that function work. If I could redirect the screen capture to store in my applications document folder, then I can use MFMailCompose to attach it to an email. Lastly, on a side note, does anyone know of a good way to capture a digital signature via touch. For instance, I'd love to have my users be able to just sign their name via touch at the bottom of the document before I convert to PDF or take a screen capture. Thanks in advance for your help. -Ray

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  • Urban Airship Tags issue

    - by Moshe
    I modified the alias sample code from: [request addRequestHeader: @"Content-Type" value: @"application/json"]; [request appendPostData:[[NSString stringWithFormat: @"{\"alias\": \"%@\"}", self.deviceAlias] dataUsingEncoding:NSUTF8StringEncoding]]; to: [request addRequestHeader: @"Content-Type" value: @"application/json"]; [request appendPostData:[[NSString stringWithFormat: @"{\"tags\": \"%@\"}", offsetStr] dataUsingEncoding:NSUTF8StringEncoding]]; offsetStr is a string containing a Timezone offset (which can be any number between -12 and 12). For some reason, Urban Airship is making each character of the string into its own tag. I've tried to substitute the - for a string neg with the same results. What's wrong?

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  • UIButton title disappears on touch

    - by psychotik
    I want a touchable UILabel, but since that's not possible I decided to create a UIButton of type UIButtonTypeCustom. It looks how I want it to look, but when I touch it, the title disappears. I tried setting the title for state UIControlStateHighlighted but that didn't help. I know I'm doing something really silly here, but can't figure it out. I tried a few things (commented in the code below) which didn't seem to help. Here's how I'm configuring the button: UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom]; button.frame = CGRectMake(0, 0, width, height); button.clearsContextBeforeDrawing = YES; button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft; button.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; button.enabled = YES; button.hidden = NO; button.highlighted = NO; button.opaque = YES; button.selected = NO; button.userInteractionEnabled = YES; button.showsTouchWhenHighlighted = NO; [button setTitle:@"Hello World" forState:UIControlStateNormal]; button.titleLabel.font = [UIFont boldSystemFontOfSize:16]; button.titleLabel.textColor = [UIColor blackColor]; // Things I tried that didn't help //[button setBackgroundColor:[UIColor clearColor]]; //button.titleLabel.text = @"Hello World"; //[button setTitle:@"Hello World" forState:UIControlStateHighlighted]; Any ideas?

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  • Three20 - SIGABRT on setting TTTableLongTextItem to TTStyledText

    - by gavinblair
    My code is as follows TTTableLongTextItem *descItem = [[TTTableLongTextItem alloc] autorelease]; TTStyledText *styledDesc = [[TTStyledText alloc] autorelease]; styledDesc = [TTStyledText textWithURLs:@"howdy http://www.google.com"]; //this line causes the SIGABRT: descItem.text = styledDesc; //I also get a warning on this line that says "warning: passing argument 1 of 'setText:' from distinct Objective-C type" What am I missing here? Any help is muchly appreciated - Three20 documentation is a little sparse!

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  • Remembering state: content offset and table cell reuse.

    - by Attacus
    I have a tableview with cells that have a scrollview in them. The scrollview is paged, 2 pages to be exact, and is meant to be able to quickly compare two small blocks of text. I'm trying to find a way to remember what the content offset of the scrollview is. Cell reuse is killing me. I've tried resetting the offset in prepareForReuse or directly in the cellForRowAtIndexPath, but it seems to give me exactly what you'd expect: Randomly offset tablecells after reuse. Anyone have any ideas?

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  • "incomplete universal character name" with stringWithUTF8String

    - by Nasser
    hi, when i try to convert form utf-8 string to NSString like so: NSString *s = [NSString stringWithUTF8String:"\U0627\U0644\U0641\U0631\U0646"]; NSLog(@"%@", s); i get the compile error: incomplete universal character name note that it sometime just works fine: NSString *UAE = [NSString stringWithUTF8String:"\U0627\U0644\U0641\U0631\U0646"]; NSLog(@"%@", UAE); and the output: ???????? so why is that happening? please help.

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  • How to save a png image to camera roll?

    - by Napolit
    I'd like to save screenshots from my game to camera roll. Right now I'm using UIImageWriteToSavedPhotosAlbum which saves the image in jpg format with way too much ugly jpg artifacts. Is there a way to save an UIImage in png format to camera roll?

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