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POI can't get the Collection View Programming topics tutorial to work with XCode 5
 

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  1. POI can't get the Collection View Programming topics tutorial to work with XCode 5
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    <p>I have done the Collection View Programming Topics three times now. Step by step, but there is no way I am getting any content in the collection view.</p> <p>The thing I have noted for the bindings of the NSText Labels when I bind them to representedObject. is that they get an exclamation mark.</p> <p>I have tried to set model key paths, xcode identifier, and title to no avail.</p> <p>I also get an extra view in addition to the collection view item.</p> <p>I hope anybody has an idea.</p> <p>I have asserted that the labels have fonts, and that the gridview has 0 rows and 1 column.</p> <p>Here is AppDelegate.h</p> <pre><code>#import &lt;Cocoa/Cocoa.h&gt; @interface AppDelegate : NSObject &lt;NSApplicationDelegate&gt; @property NSMutableArray *personModelArray; @property (assign) IBOutlet NSWindow *window; // To see if personModelArray is populated. - (IBAction) showElements:(id) sender ; @end </code></pre> <p>Here is AppDelegate.m</p> <pre><code>// // AppDelegate.m // Occupations #import "AppDelegate.h" #import "PersonModel.h" @implementation AppDelegate @synthesize personModelArray; - (void)awakeFromNib { PersonModel * pm1 = [[PersonModel alloc] init]; pm1.name = @"John Appleseed"; pm1.occupation = @"Doctor"; PersonModel * pm2 = [[PersonModel alloc] init]; pm2.name = @"Jane Carson"; pm2.occupation = @"Teacher"; PersonModel * pm3 = [[PersonModel alloc] init]; pm3.name = @"Ben Alexander"; pm3.occupation = @"Student"; NSMutableArray * tempArray = [NSMutableArray arrayWithObjects:pm1, pm2, pm3, nil]; [self setPersonModelArray:tempArray]; /* for (PersonModel *obj in personModelArray) { NSLog(@"%@ %@", obj.name, obj.occupation) ; } */ // NSLog(@"Awoken from nib %@",personModelArray) ; } // Convenience: hooked up with a button to see that // the contents of the array is still there! -(void)showElements:(id) sender { for (PersonModel *obj in personModelArray) { NSLog(@"%@ %@", obj.name, obj.occupation) ; } } - (void)applicationDidFinishLaunching:(NSNotification *)aNotification { // Insert code here to initialize your application } -(void)insertObject:(PersonModel *)p inPersonModelArrayAtIndex:(NSUInteger)index { [personModelArray insertObject:p atIndex:index]; } -(void)removeObjectFromPersonModelArrayAtIndex:(NSUInteger)index { [personModelArray removeObjectAtIndex:index]; } -(void)setPersonModelArray:(NSMutableArray *)a { personModelArray = a; } -(NSArray*)personModelArray { return personModelArray; } @end </code></pre> <p>Here is PersonModel.h</p> <pre><code>// // PersonModel.h // Occupations // #import &lt;Foundation/Foundation.h&gt; @interface PersonModel : NSObject { NSString * name; NSString * occupation; } @property NSString * name; @property NSString * occupation; @end </code></pre> <p>Here is PersonModel.m</p> <pre><code>// // PersonModel.m // Occupations #import "PersonModel.h" @implementation PersonModel @synthesize name; @synthesize occupation; @end </code></pre>
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    1. COWell.. it is not very clear what you want to achieve... Tip for future . it is not good idea to manipulate with object data in AppDelegate class. Create Manager class and let it do you dirty work...
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      1. POI can't get the Collection View Programming topics tutorial to work with XCode 5
      1. USHariz Hent
    2. COI want to be able to see contents of an array (two properties per object) in two labels inside a NSCollectionView (grid view).
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      1. POI can't get the Collection View Programming topics tutorial to work with XCode 5
      1. USMcUsr
    3. COFor NSCollectionVIew to work you need: set delegate and data source of collectionView, add 2 methods.. `-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger) -(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath`. in the last method you need to do you customization.
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      1. POI can't get the Collection View Programming topics tutorial to work with XCode 5
      1. USHariz Hent
 

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