Question

Hi i have a uislider that changes the images in uiimageview.At first time it works great there is no delay . But when i click the button to publish (there is a modal view that opens) and close the modal view (this is the second time) the uiimageview delays that shown the images.i cant find why it gets slower:(

-(IBAction)sliderSlide:(UISlider *)aSlider {

float f=slider.value;
NSString *show=[NSString stringWithFormat:@"%.0f %%",f];
label2.text=show;
NSString *show1=[NSString stringWithFormat:@"%.0f",f];
imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"/Smiley_000%@.png", show1]];

float slid=slider.value;
if(slid>99)
{
    [imageView1 setHidden:NO];
    [imageView2 setHidden:YES];
    NSString *fullpath = [[[NSBundle mainBundle] bundlePath] stringByAppendingString:@"/Smiley_00099.png"];
    imageView.image = [UIImage imageWithContentsOfFile:fullpath];
    secondarray=[NSArray arrayWithObjects:  
                 [UIImage imageNamed:@"Rays_00000.png"],
                 [UIImage imageNamed:@"Rays_00001.png"],
                 [UIImage imageNamed:@"Rays_00002.png"],
                 [UIImage imageNamed:@"Rays_00003.png"],
                 [UIImage imageNamed:@"Rays_00004.png"],
                 [UIImage imageNamed:@"Rays_00005.png"],
                 [UIImage imageNamed:@"Rays_00006.png"],
                 [UIImage imageNamed:@"Rays_00007.png"],
                 [UIImage imageNamed:@"Rays_00008.png"],
                 [UIImage imageNamed:@"Rays_00009.png"],
                 nil];

    imageView1.animationImages = secondarray;        
    // How many seconds it should take to go through all images one time.
    imageView1.animationDuration = 0.5;
    // How many times to repeat the animation (0 for indefinitely).
    imageView1.animationRepeatCount = 0;
    [imageView1 startAnimating];
}
else if (slid<1)
{
    [imageView2 setHidden:NO];
    [imageView1 setHidden:YES];
    NSString *fullpath = [[[NSBundle mainBundle] bundlePath] stringByAppendingString:@"/Smiley_0000.png"];
    imageView.image = [UIImage imageWithContentsOfFile:fullpath];
    firstarray=[NSArray arrayWithObjects:  
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         [UIImage imageNamed:@"Teardrop_00001.png"],
                         [UIImage imageNamed:@"Teardrop_00002.png"],
                         [UIImage imageNamed:@"Teardrop_00003.png"],
                         [UIImage imageNamed:@"Teardrop_00004.png"],
                         [UIImage imageNamed:@"Teardrop_00005.png"],
                         [UIImage imageNamed:@"Teardrop_00006.png"],
                         [UIImage imageNamed:@"Teardrop_00007.png"],
                         [UIImage imageNamed:@"Teardrop_00008.png"],
                         [UIImage imageNamed:@"Teardrop_00009.png"],
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         [UIImage imageNamed:@"Teardrop_00000.png"],
                         nil];


    imageView2.animationImages = firstarray;        
    // How many seconds it should take to go through all images one time.
    imageView2.animationDuration = 0.8;

    // How many times to repeat the animation (0 for indefinitely).
    imageView2.animationRepeatCount = 0;
    [imageView2 startAnimating];
    [self.view addSubview:imageView2];
}
else 
{
    [imageView1 setHidden:YES];
    [imageView2 setHidden:YES];
    [imageView1 stopAnimating];
    [imageView2 stopAnimating];
}
[[NSUserDefaults standardUserDefaults] setFloat:slid forKey:@"slider"];
[[NSUserDefaults standardUserDefaults] synchronize];
}

this is my code if u can see why performance decrease in the second time i slide the slider pls tell me

edit 1:

i cancel some animations and slider get back to its speed but now the pictures are sticking slider okey but pictures are slow then the first time.

Answer 1

My alertview makes the application (slider and images) goes slower so i remove it and it work just fine.