How to fit image in UITextView and Tap to get larger - ios

Question

I have created a Table-view in main ViewController once i touch the row it will take to the next view controller(DetailViewController) where it display the image and name of dish.And once i tap the image it should get larger but it is not getting bigger .The below code is which i have tried in DetailViewController.
DetailViewController.m
- (void)viewDidLoad
{
[super viewDidLoad];
imageView=[[UIImageView alloc] initWithFrame:CGRectMake(10, 10,100, 100)];
CGRect textViewFrame = CGRectMake(10, 10, 300, 400);
textView = [[UITextView alloc] initWithFrame:textViewFrame];
textView.returnKeyType = UIReturnKeyDone;
textView.backgroundColor=[UIColor whiteColor];
textView.editable=NO;
textView.delegate = self;
[self.view addSubview:textView];
[textView addSubview:imageView];
textView.alpha = 0.9;
textView.font = [UIFont systemFontOfSize:15];
if(mrowno==0)
{
imageView.image=[UIImage imageNamed:#"Dosa.jpg"];
textView.text = #"\n\n\n\n\n\n\n\nDOSA\nDosa, ";
imageButton = [[UIButton alloc]init];
[imageButton setFrame:CGRectMake(0, 0, 100, 100)];
[imageButton addTarget:self action:#selector(imageTapped:) forControlEvents:UIControlEventTouchUpInside];
[imageView addSubview:imageButton];
}
Here is the method to make image larger
-(void)imageTapped:(UIButton*)in_sender
{
[UIView transitionWithView:in_sender.superview duration:0.8f options:UIViewAnimationOptionCurveLinear animations:^
{
[in_sender.superview setFrame:CGRectMake(0, 0, 300, 500)];
}
completion:^(BOOL finished)
{
}];
}

Answer 1

You can increase and decrease the size of image by pinch in and pinch out,If it required
-(void)viewDidLoad
{
UIPinchGestureRecognizer* pinch=[[UIPinchGestureRecognizer alloc] initWithTarget:self action:#selector(pinching:)];
[self.imageView addGestureRecognizer:pinch];
}
-(void)pinching:(UIGestureRecognizer*) recognizer
{
UIPinchGestureRecognizer* pinch=(UIPinchGestureRecognizer*) recognizer;
self.imageView.transform=CGAffineTransformScale(self.imageView.transform, pinch.scale, pinch.scale);
pinch.scale=1;
NSLog(#"pinching");
}

Answer 2

You do not want to use transitionWithView. Instead, you want to use + animateWithDuration: delay:options:animations:completion: (or any of its shorter variants...)
[UIView animateWithDuration:0.3f delay:0.0f options:UIViewAnimationOptionCurveEaseInOut animations:^{
viewYouWantToAnimate.frame = CGRectMake(..., ..., ..., ...);
} completion:^{
//Add completion code here, or pass nil if you don't have anything to do.
}];
Edit: In case you were wondering what transitionWithView was used for... the AppleDocs have a great example of it adding animations for remove/addSubview methods (not frame modifications):
[UIView transitionWithView:containerView
duration:0.2
options:UIViewAnimationOptionTransitionFlipFromLeft
animations:^{
[fromView removeFromSuperview];
[containerView addSubview:toView];
} completion:NULL];