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iOS

Posted by Dillon Carter
Dillon Carter
6,364 Points

Set the duration of your animation to 5 seconds /Help

I am on the 3rd part of the task and it is asking me to create the duration for the animation. Here is what I have;

"self.imageView.animationDuration = 5.0;"

Could someone help me figure out what I am doing wrong?

6 Answers

Amit Bijlani
STAFF
Amit Bijlani
Treehouse Guest Teacher
Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher

Your first answer is right except that you should not specify self which is used only if imageView were a property, which it isn't. It is simply an instance variable. 

imageView.animationDuration = 5.0;
Dillon Carter
Dillon Carter
6,364 Points
Dillon Carter
Dillon Carter
6,364 Points

I've also tried:

"[UIView setAnimationDuration: 5.0];"

Dillon Carter
Dillon Carter
6,364 Points
Dillon Carter
Dillon Carter
6,364 Points

I was so close lol thanks Amit!

Trey Chad
Trey Chad
3,535 Points
Trey Chad
Trey Chad
3,535 Points

I have attempted both "self.imageView.animationDuration = 5.0; " & "imageView.animationDuration = 5.0" and neither seem to work... get an error that says : You need to set the property of the duration of your animation on the 'imageView'.

Trey Chad
Trey Chad
3,535 Points

Came back and tried the code challenge again and had success. I'm assuming it was a minor spelling error I overlooked. Thanks for your help though Amit!

Stu Cowley
Stu Cowley
26,287 Points
Stu Cowley
Stu Cowley
26,287 Points

Hey Amit,

I too am stuck on part 2 of this code challenge,

Here is what I have

**THViewController.m

#import "THViewController.h"

@implementation THViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    // backgroundImage is a local variable
    UIImage *backgroundImage = [UIImage imageNamed:@"background"];
    // imageView is a property
    self.imageView = [[UIImageView alloc] initWithImage:backgroundImage];

    // Add your code below! 
    // Remember 'imageView' is a property 
    // so refer to it as 'self.imageView'
    self.imageView.animationImages = [[NSArray alloc] initWithObjects: [UIImage imageNamed:@"01.png"], [UIImage imageNamed:@"02.png"], [UIImage imageNamed:@"03.png"], nil];
    [imageView.animationDuration = 5.0];


}

@end

I've been stuck on this for a couple of hours now and it's killing me,

Any additional help on this would be great,

Stu :)

Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher
Amit Bijlani
Amit Bijlani
Treehouse Guest Teacher

Everything is right except the last line. You unless you are calling a method you don't need to use the box brackets. You also need to use self because imageView is a property. So your last line should look like:

    self.imageView.animationDuration = 5.0;

PS. Leave a line before and after the backtics ``` so that the code formatting can show

Stu Cowley
Stu Cowley
26,287 Points
Stu Cowley
Stu Cowley
26,287 Points

Hey Amit Bijlani,

You are an absolute champ (like usual), I re-looked over the code and what you suggested and it has finally sunken in.

Also thanks for the tip on the code formatting ;)

Many thanks

Stu :)