Geek asks and answers

Trying to display an array of images, the code returns the iphone to the main screen

Here is the problem code:

The code is designed to display an array of images that can then be scrolled.

- (void)viewDidLoad {
    [super viewDidLoad];

    NSArray *photos = [[NSArray arrayWithObjects:   
                        [UIImage imageNamed:@"Event.png"],
                        [UIImage imageNamed:@"Logo.png"],
                        [UIImage imageNamed:@"default.png"],
                        [UIImage imageNamed:@"LittleLogoImage.png"],
                        nil] retain];      // TODO – fill with your photos

    // note that the view contains a UIScrollView in aScrollView

    int i=0;
    int width = 0;
    int height = 0;
    for ( NSString *image in photos )
    {
        UIImage *image = [UIImage imageNamed:[photos objectAtIndex:i]];
        UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
        imageView.contentMode = UIViewContentModeScaleAspectFit;
        imageView.clipsToBounds = YES;

        imageView.frame = CGRectMake( imageView.frame.size.width * i++, 0, imageView.frame.size.width, imageView.frame.size.height);

        [aScrollView addSubview:imageView];
        width = imageView.frame.size.width;
        height = imageView.frame.size.height;

        [imageView release];
    }
    aScrollView.contentSize = CGSizeMake(width*i, height);
    aScrollView.delegate = self;
}

Any ideas?

[ 2011-05-07 22:46:47 +0100.] 2011-05-07 22: 46: 49.314 ALPHA [1171: 207] load01 2011-05-07 22: 47: 13.749 ALPHA [1171: 207] 2 2011-05-07 22: 47: 13.751 [1171: 207] dealloc01 2011-05-07 22: 47: 13,755 ALPHA [1171: 207] load02 2011-05-07 22: 47: 19,791 [1171: 207] 4 2011-05-07 22: 47: 19,792 ALPHA [1171: 207] dealloc02 2011-05-07 22: 47: 19.795 [1171: 207] - [UIImage length]: , instance 0x4b20f60 ​​2011-05-07 22: 47: 19.797 [1171: 207] * - "NSInvalidArgumentException", : '- [UIImage length]: 0x4b20f60 ​​' * : (0 CoreFoundation
0x00dca5a9 exceptionPreprocess + 185   1 libobjc.A.dylib
0x00f1e313 objc_exception_throw + 44   2 CoreFoundation
0x00dcc0bb - [NSObject (NSObject) doesNotRecognizeSelector:] + 187 3
CoreFoundation
0x00d3b966 __forwarding + 966 4
CoreFoundation
0x00d3b522 _CF_forwarding_prep_0 + 50   5 UIKit
0x003e3568 _UIImageAtPath + 36 6

0x000037fd - [PhotosView viewDidLoad] + 597 7 UIKit
0x0036a089 - [UIViewController view] + 179 8
0x00002af3 - [ALPHAViewController displayView:] + 500 9 ALPHA
0x00002707 - [ALPHAAppDelegate displayView:] + 60 10 ALPHA
0x00002cdd - [View2 viewPhotos:] + 99   11 UIKit
0x002ba4fd - [UIApplication sendAction: to: from: forEvent:] + 119   12 UIKit
0x0034a799 - [UIControl sendAction: to: forEvent:] + 67 13 UIKit
0x0034cc2b - [UIControl () _sendActionsForEvents: withEvent:] + 527 14 UIKit
0x0034b7d8 - [UIControl touchedEnded: withEvent:] + 458 15 UIKit
0x002deded - [UIWindow _sendTouchesForEvent:] + 567 16 UIKit
0x002bfc37 - [UIApplication sendEvent:] + 447 17 UIKit 0x002c4f2e _UIApplicationHandleEvent + 7576 18
0x01722992 PurpleEventCallback + 1550   19 CoreFoundation
0x00dab944 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION+ 52 20 CoreFoundation 0x00d0bcf7 __CFRunLoopDoSource1 + 215   21 CoreFoundation
0x00d08f83 __CFRunLoopRun + 979 22 CoreFoundation
0x00d08840 CFRunLoopRunSpecific + 208   23 CoreFoundation
0x00d08761 CFRunLoopRunInMode + 97 24 GraphicsServices
0x017211c4 GSEventRunModal + 217 25 GraphicsServices
0x01721289 GSEventRun + 115 26 UIKit 0x002c8c93 UIApplicationMain + 1160   27
0x000026a8 + 102 28 ALPHA
0x00002639 start + 53)

'NSException'

,

+3
3
for ( NSString *image in photos )
{
    UIImage *image = [UIImage imageNamed:[photos objectAtIndex:i]];
    ...

. NSString, UIImage - . NSString UIImage, forin. , , NSString, UIImage. , - :

for ( NSString *imageName in photos )
{
    UIImage *image = [UIImage imageNamed:imageName];
    ...

. , images UIImages, NSString ! , :

for ( UIImage *image in photos )
{
    ...

! UIImage *image = ... , .

, !

+8

photos UIImage. UIImage UIImage?

UIImage *image = [UIImage imageNamed:[photos objectAtIndex:i]];

:

UIImage *image = [photos objectAtIndex:i];
+1

photos are NSArray UIImages, yes, do you list it as strings?

for ( NSString *image in photos )

it should be:

for ( UIImage *image in photos )
    {
        UIImageView *imageView = [[UIImageView alloc] initWithImage:image];
        imageView.contentMode = UIViewContentModeScaleAspectFit;
        imageView.clipsToBounds = YES;

        imageView.frame = CGRectMake( imageView.frame.size.width * i++, 0, imageView.frame.size.width, imageView.frame.size.height);

        [aScrollView addSubview:imageView];
        width = imageView.frame.size.width;
        height = imageView.frame.size.height;

        [imageView release];
    }
0
source

More articles:


All Articles