pop up menu with long press gesture - ios

Question

I'm new to ios and also core animation so I'm doing some tests to get used to it.
I've got a menu I'm trying to create by doing a long press gesture. I want the button to by animating up and then animate down and then disappear. I got the appearing part working, but I can't figure out how to make it disappear. It also doesn't let me animate my imageView in my UIGestureRecognizerStateEnded statement. Basically, I have two questions:
How can I animate the button going down when the long press is released?
How can I only make one of these buttons instead of them appearing every time I do a long press?
Here's what I have in my .m
-(void)onPress:(UILongPressGestureRecognizer*)longpress{
CGPoint touchCenter = [longpress locationInView:self.view];
UIImage *plus = [UIImage imageNamed:#"plus"];
imageView = [[UIImageView alloc]initWithImage:plus];
CGRect imageViewFrame = CGRectMake(0, 0, 35, 35);
imageViewFrame.origin = CGPointMake(touchCenter.x - imageViewFrame.size.width / 2.0f, touchCenter.y - imageViewFrame.size.height / 2.0f);
imageView.frame = imageViewFrame;
if (longpress.state == UIGestureRecognizerStateBegan) {
[self.view addSubview:imageView];
[UIView animateWithDuration:0.6 animations:^{
CGAffineTransform moveTrans = CGAffineTransformMakeTranslation(0, -40);
imageView.transform = moveTrans;
}];
NSLog(#"Long press");
return;
}else{
if (longpress.state == UIGestureRecognizerStateEnded || longpress.state == UIGestureRecognizerStateCancelled || longpress.state == UIGestureRecognizerStateFailed) {
[UIView animateWithDuration:0.6 animations:^{
CGAffineTransform moveTrans = CGAffineTransformMakeTranslation(0, 40);
imageView.transform = moveTrans;
NSLog(#"long press done");
}];
}
}
}
and my .h
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
#interface ViewController : UIViewController<UIGestureRecognizerDelegate>
{
UIImageView *imageView;
CAShapeLayer *layer;
}
#property(nonatomic) float angle;
#property(nonatomic, strong) UIImageView *imageView;
#property (nonatomic, strong) UIImage *image;
#end

Answer 1

I'm now sure what you want to do. But I modified some of your code:
#interface ViewController ()
#property (strong, nonatomic) UIView *moveView;
#end
- (void)viewDidLoad
{
[super viewDidLoad];
UILongPressGestureRecognizer *recoginzer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(onPress:)];
[self.view addGestureRecognizer:recoginzer];
}
- (void)onPress:(UILongPressGestureRecognizer*)longpress {
CGPoint location = [longpress locationInView:self.view];
if (longpress.state == UIGestureRecognizerStateBegan) {
if (!self.moveView) {
self.moveView = [[UIView alloc] initWithFrame:CGRectMake(location.x, location.y, 100, 100)];
self.moveView.backgroundColor = [UIColor redColor];
[self.view addSubview:self.moveView];
} else {
self.moveView.frame = CGRectMake(location.x, location.y, 100, 100);
}
[UIView animateWithDuration:0.6 animations:^{
CGAffineTransform moveTrans = CGAffineTransformMakeTranslation(0, -40);
self.moveView.transform = moveTrans;
}];
NSLog(#"Long press");
} else if (longpress.state == UIGestureRecognizerStateEnded || longpress.state == UIGestureRecognizerStateCancelled || longpress.state == UIGestureRecognizerStateFailed) {
[UIView animateWithDuration:0.6 animations:^{
CGAffineTransform moveTrans = CGAffineTransformMakeTranslation(0, 40);
self.moveView.transform = moveTrans;
NSLog(#"long press done");
}];
}
}
Let me know if you need more help.