load UIImage from array upon selected index

gbenna · February 2012

I am working on a coverflow app. I have the app so that when a specific cover image is double tapped a new xib is pushed onto the screen. As I have it now for each image tapped the same detail view controller loads a different detail xib. so that I can have different images and text. Here is my code.

- (void) coverflowView:(TKCoverflowView*)coverflowView coverAtIndexWasDoubleTapped:(int)index{

NSLog(@"Index: %d",index);
if (index ==0){
LeafDetailViewController *detailViewController = [[LeafDetailViewController alloc] initWithNibName:@"LeafDetailViewController" bundle:nil];
[self.navigationController pushViewController:detailViewController animated:YES];
}
else if (index ==1){
LeafDetailViewController *detailViewController = [[LeafDetailViewController alloc] initWithNibName:@"LeafDetailViewController2" bundle:nil];
[self.navigationController pushViewController:detailViewController animated:YES];
}

}

I would rather just load the same detail view controller and the same detail xib. and just load the images and text that goes with the cover image chosen from an array.

Here is the array

covers = [NSArray arrayWithObjects:
[UIImage imageNamed:@"0002. LIquidambar Acalycina .jpg"],
[UIImage imageNamed:@"0003. Liquidambar Formosana.jpg"],
[UIImage imageNamed:@"0004. Liquidambar Orientalis Oriental Sweetgum1.jpg"],
[UIImage imageNamed:@"0005. Liquidambar Styraceflua Sweetgum2.jpg"],
[UIImage imageNamed:@"0023. Kalopanax Septemlobus Castor Aralia1.jpg"],
[UIImage imageNamed:@"0024. Metapanax DavidII 1.jpg"],
[UIImage imageNamed:@"0024. Metapanax DavidII 3.jpg"],
[UIImage imageNamed:@"0082. Alangium Chinense1.jpg"],
[UIImage imageNamed:@"0145. Quercus Alba White Oak1.jpg"],nil];

and here is my .h file for the detail view controller

#import

@interface LeafDetailViewController : UIViewController < UIImagePickerControllerDelegate, UINavigationControllerDelegate>{
IBOutlet UIImageView *imageView;
IBOutlet UIImageView *imageView2;
UITextView *myText;
NSArray *covers;

}

@property (nonatomic, retain) IBOutlet UIImageView *imageView;
@property (nonatomic, retain) IBOutlet UIImageView *imageView2;
@property (nonatomic, retain) UITextView *myText;
@property (nonatomic, retain) IBOutlet UIButton *takePhotoButton;
@property (nonatomic, retain) NSArray *covers;
-(IBAction) getPhoto:(id) sender;
@end

can anyone help me to do this. I am a rather newbie at this and would really appreciate some help.

Domele · February 2012

1. Create a UIImage property in LeafDetailViewController.

2. In viewWillAppear, set this UIImage to the appropriate image view.

3. Now when you allocate LeafDetailViewController, retrieve the selected image using NSArray's objectAtIndex: method passing in "index" (assuming you are doing this from coverflowView:(TKCoverflowView*)coverflowView coverAtIndexWasDoubleTapped:(int)index.

4. Set the LeafDetailViewController's image property with the image you just got from the array.

gbenna · February 2012

Domele;408746 said:
1. Create a UIImage property in LeafDetailViewController.

2. In viewWillAppear, set this UIImage to the appropriate image view.

3. Now when you allocate LeafDetailViewController, retrieve the selected image using NSArray's objectAtIndex: method passing in "index" (assuming you are doing this from coverflowView:(TKCoverflowView*)coverflowView coverAtIndexWasDoubleTapped:(int)index.

4. Set the LeafDetailViewController's image property with the image you just got from the array.

I'm not sure what you are saying.

This is what I put in
- (void) coverflowView:(TKCoverflowView*)coverflowView coverAtIndexWasDoubleTapped:(int)index{

LeafDetailViewController *detailViewController = [[LeafDetailViewController alloc] initWithNibName:@"LeafDetailViewController" bundle:nil];

detailViewController.imageView= [covers objectAtIndex:index];
[self.navigationController pushViewController:detailViewController animated:YES];
}

and this is in the viewDidLoad

- (void)viewDidLoad
{
[super viewDidLoad];

imageView.image = [UIImage imageNamed: @"index"];

}

I know this isn't right

could you please help me.

Domele · February 2012

Let's start with properties. Do you know what a property is and how to set one up? I'm guessing not since you didn't the do the 1st step correctly. Here is a guide: http://www.iphonedevsdk.com/forum/iphone-sdk-tutorials/26587-slicks-definitive-guide-properties.html

Once you've read that, do the 1st step and post the header file of LeafDetailViewController.

gbenna · February 2012

Domele;409061 said:
Let's start with properties. Do you know what a property is and how to set one up? I'm guessing not since you didn't the do the 1st step correctly. Here is a guide: http://www.iphonedevsdk.com/forum/iphone-sdk-tutorials/26587-slicks-definitive-guide-properties.html

Once you've read that, do the 1st step and post the header file of LeafDetailViewController.

OK I read and reread but when I did some of the code I got errors and warning until I did it this way.

- (void)viewDidLoad
{
[super viewDidLoad];

UIImage *image = [[UIImage alloc] init];
self .imageView.image =image;

}

I noticed now that apple doesn't let you release so I left those out.

I hope I did this ok.

Domele · February 2012

No. A UIViewController's views should be private. Only the view controller itself should alter them or use them. Create a UIImage property and use that in viewWillAppear to assign your imageView's image property.

gbenna · February 2012

Domele;409085 said:
No. A UIViewController's views should be private. Only the view controller itself should alter them or use them. Create a UIImage property and use that in viewWillAppear to assign your imageView's image property.

Is this what you meant for me to put in my LeafDetailViewController .m file?

-(void) viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
UIImage *image = [[UIImage alloc] init];
self .imageView.image =image;
}

before
-(void) viewDidLoad

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load UIImage from array upon selected index

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