Pan, Pinch, Rotate image Programmatically?

TiggyLi · March 2012

Hi,

I have a button that when you click on it a image with show (programmatically) and I also want it to be able to Pan, pinch (resize) and rotate programmatically but I don't know how, I only know how to add the pan, pinch and rotate with a xib. :( :confused: I hope someone can help me...

There's nothing in the .h file

Here's the .m file


-(IBAction)Troll:(id)sender {
    
    UIImageView *troll = [[UIImageView alloc] initWithFrame:CGRectMake(224, 75, 80, 74)];
    troll.image = [UIImage imageNamed:@\"Troll.png\"];
    
    [self.view addSubview:troll];
    
}

kenshin · March 2012

Use:

      UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@action(panImageView:)];
        [imageView addGestureRecognizer:pan];
        [pan release];
        
        UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@action(pinchImageView:)];
        [imageView addGestureRecognizer:pinch];
        [pinch release];
        
        UIRotationGestureRecognizer *rotate = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@action(rotateImageView:)];
        [imageView addGestureRecognizer:rotate];
        [rotate release];

TiggyLi · March 2012

kenshin;420109 said:

Use:

      UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@action(panImageView:)];
        [imageView addGestureRecognizer:pan];
        [pan release];
        
        UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc] initWithTarget:self action:@action(pinchImageView:)];
        [imageView addGestureRecognizer:pinch];
        [pinch release];
        
        UIRotationGestureRecognizer *rotate = [[UIRotationGestureRecognizer alloc] initWithTarget:self action:@action(rotateImageView:)];
        [imageView addGestureRecognizer:rotate];
        [rotate release];

Thanks for replying so fast!! :D
But I tried the code and it didn't work, it said unexpected @ in program so I also tried writing:


@\"action(rotateImageView:)\"];

and I also tried changing the @action to @selector
but it didn't work either, my image doesn't pan, pinch or rotate.. :confused::(
Hop you can help me..

msovani · March 2012

You can download and try a sample code called "Touches" from Apple's Developer Library. That sample code does exactly what you are looking for.

https://developer.apple.com/library/ios/#samplecode/Touches/Introduction/Intro.html

TiggyLi · March 2012

msovani;420170 said:
You can download and try a sample code called "Touches" from Apple's Developer Library. That sample code does exactly what you are looking for.

https://developer.apple.com/library/ios/#samplecode/Touches/Introduction/Intro.html

Thanks! but that's not exactly what I want, I want to be able to pan, pinch and rotate my imageView without using the interface builder (xib) all programmatically.

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Pan, Pinch, Rotate image Programmatically?

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