How to Rotate image after tapped in uiscrollview? - ios

Question

- (void)configureView
{
lblwelcome.text=#"Welcome To Gallery World";
for (UIImageView *subview in self.view.subviews) {
[subview removeFromSuperview];
}
UIBarButtonItem *addAcc = [[UIBarButtonItem alloc]
initWithTitle:#"Zoom"
style:UIBarButtonItemStylePlain
target:self
action:#selector(zoomEnabled)];
UIBarButtonItem *delAcc = [[UIBarButtonItem alloc]
initWithTitle:#"Rotate"
style:UIBarButtonItemStylePlain
target:self
action:#selector(rotateEnabled)];
NSArray *arrBtns = [[NSArray alloc]initWithObjects:addAcc,delAcc, nil];
self.navigationItem.rightBarButtonItems = arrBtns;
categoryScrollX=30;
categoryScrollY=30;
[scr.delegate self];
scr.frame = self.view.frame;
for (UIImageView *subview in scr.subviews) {
[subview removeFromSuperview];
}
height = 200;
width = 400;
pos_y =0;
pos_x =0;
int idx=0;
CGFloat x=0;
switch (_itemNo) {
case 0:
for(int i=1;i<6;i++)
{//imageView.frame = CGRectMake(categoryScrollX, categoryScrollY, (self.view.frame.size.width/4)-25, self.view.frame.size.width/4-5);
UIImageView *image = [[UIImageView alloc] initWithFrame:CGRectMake(categoryScrollX, categoryScrollY, (self.view.frame.size.width/4)-25, self.view.frame.size.width/4-5)];
[image setImage:[UIImage imageNamed:[NSString stringWithFormat:#"e1%d.png",i]]];
[scr addSubview:image];
x+=320;
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap:)];
tapGesture.numberOfTapsRequired = 1;
tapGesture.delegate = self;
image.userInteractionEnabled = YES;
[image addGestureRecognizer:tapGesture];
// [image.layer setBorderColor: [[UIColor yellowColor] CGColor]];
// [image.layer setBorderWidth: 0.9];
// image.layer.MasksToBounds = false;
// image.layer.ShadowColor = [[UIColor alloc] initWithRed:0 green:0 blue:0 alpha:0.5].CGColor;
// image.layer.ShadowOpacity = 1.0f;
// image.layer.ShadowOffset = CGSizeMake(0, 2.5f);
// image.clipsToBounds = NO;
CALayer* layer = [image layer];
[layer setBorderWidth:2.0f];
[image setContentMode:UIViewContentModeScaleAspectFit];
[layer setBorderColor:[UIColor whiteColor].CGColor];
scr.minimumZoomScale = scr.frame.size.width / imgview.frame.size.width;
scr.maximumZoomScale = 2.0;
[scr setZoomScale:scr.minimumZoomScale];
scrollPosition++;
currentIndex++;
if(scrollPosition>4)
{
categoryScrollY = categoryScrollY+self.view.frame.size.width/4+12;
scrollPosition=0;
currentIndex = currentIndex+scrollPosition;
categoryScrollX=30;
}
else
{
categoryScrollX= (categoryScrollX+self.view.frame.size.width/4)-6;
}
}
scr.pagingEnabled=YES;
scr.contentSize = CGSizeMake(320*5, 300);
_detailDescriptionLabel.text=#"Accessories";
self.title=#"Accessories";
[self.view addSubview:scr];
break;
.....following by other cases with the above way with different images....
Above is my configure view and am just adding some dynamic images in UiScrollview and i have added tap guesture on each images....with the following
-(void)handleSingleTap:(UITapGestureRecognizer *)rec{
for (UIImageView *subview in scr.subviews) {
[subview removeFromSuperview];
}
UIView *img = [rec view];
img.frame = self.view.frame;
[self.view addSubview:img];
}
now what i want is after tap i want to give rotation effect to that image..
am just beginners for this Xcode environment and as well as iOS development.
some how i just succeeded to show images in uiscrollview..but after googled so much i couldn't find a good guidance for rotating the image.so can any one help me out to give rotation to uiimageview image in uiscrollview after the image is tapped?

Answer 1

try like this ,
-(IBAction)ButtonAction:(id)sender{
CABasicAnimation *fullRotation = [CABasicAnimation animationWithKeyPath:#"transform.rotation"];
fullRotation.fromValue = [NSNumber numberWithFloat:0];
fullRotation.toValue = [NSNumber numberWithFloat:((360*M_PI)/180)];
fullRotation.duration = 1;
fullRotation.repeatCount = 1;
[imageview.layer addAnimation:fullRotation forKey:#"360"];
}
take one button and give action(call this mathod) for that button.

Answer 2

You can rotate the imageView using the following code :
imageView.transform = CGAffineTransformMakeRotation(angle);