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iOS

Posted by Tom Bakker
Tom Bakker
2,132 Points

iOS Image Sequence Importing (need help with debugging)

I'm following the iOS Development Track and decided to do the extra task and try to make a random quotes application. One of the things I tried to recreate was the animation via an image sequence. But because my sequence consisted of 118 images I decided it'd be best if i wrote code to import them into an NSArray. But, quite disappointingly, it didn't work. I have no idea what all the debug information means. This is the script I wrote to get the information.

```Objective C

NSMutableArray *waveImageSequence = [[NSMutableArray alloc] initWithCapacity:118];

for (int i = 0; i < 118; i++) {
    if (i < 10){
        NSString *imageName = [NSString stringWithFormat:@"wave0000%d", i];
        waveImageSequence[i] = [UIImage imageNamed:imageName];
    } else if (1 < 100){
        NSString *imageName = [NSString stringWithFormat:@"wave000%d", i];
        waveImageSequence[i] = [UIImage imageNamed:imageName];
    } else {
        NSString *imageName = [NSString stringWithFormat:@"wave00%d", i];
        waveImageSequence[i] = [UIImage imageNamed:imageName];
    }
}

self.waveImageView.animationImages = [NSArray arrayWithArray:waveImageSequence];
self.waveImageView.animationDuration = 5.0f;
self.waveImageView.animationRepeatCount = 0.0f;

[self.waveImageView startAnimating];

waveImageView is the property linking to my imageView in the storyboard.
And this is the file the debugger shows

```Objective C
//
//  main.m
//  RandomQuotes
//
//  Created by Tom Bakker on 13-02-14.
//  Copyright (c) 2014 Tom Bakker. All rights reserved.
//

#import <UIKit/UIKit.h>

#import "TBAppDelegate.h"

int main(int argc, char * argv[])
{
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([TBAppDelegate class]));
    }
}

I hope someone can help me out! Thank you very much!

2 Answers

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

Do this, then run the program again: http://imgur.com/F7hpMUq

Instead of the program going directly to main.m, it will stop at the line where the problems are (most of the time)

Tom Bakker
Tom Bakker
2,132 Points

Oh that's great! I used that and I almost instantly found that I typed a 1 instead of an i at the second elseif. How could I have missed that? Haha

Thomas Nilsen
Thomas Nilsen
14,957 Points
Thomas Nilsen
Thomas Nilsen
14,957 Points

The silly mistakes are often the ones that are hardest to find ; )