I am trying to add 2 gestures to a uiimage that pulls a subVIew. One gesture is swipe to open/close. And the other is longpressand hold to open it at a specific height.
longPress.minimumPressDuration = 1;
[imageNavigationSlider addGestureRecognizer:longPress];
UILongPressGestureRecognizer *longPressWall = [[[UILongPressGestureRecognizer alloc]
initWithTarget:self action:#selector(handleLongPressWall:)] autorelease];
longPressWall.minimumPressDuration = 1;
PullMeImage.userInteractionEnabled=YES;
[PullMeImage addGestureRecognizer:longPressWall];
UISwipeGestureRecognizer *swipe = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipe:)] autorelease];
swipe.direction = UISwipeGestureRecognizerDirectionLeft | UISwipeGestureRecognizerDirectionRight;
[PullMeImage addGestureRecognizer:swipe];
[swipe setDelegate:self];
The long press gesture is correctly recognized, but the swipe isn't.
I also tried using:
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
But with no success. Any help will be very much appreciated.
Thank you
Related
I am working on an application which works like a remote control of different devices like Game Console, Set-top Box, etc.
Application contains different type of controls like gesture and buttons to perform events as remote.
Single gesture view contains multiple gesture recognizer as follow:
1 finger Tap using UITapGestureRecognizer
2 finger Tap using UITapGestureRecognizer
1 finger swipe using UISwipeGestureRecognizer
2 finger swipe using UISwipeGestureRecognizer
My requirement is to implement 1 finger Swipe gesture recognizer along with hold event. So, that will continue my swipe action until user will not remove its finger from the view.
I have tried UILongPressGestureRecognizer after UISwipeGestureRecognizer but this didn’t work for me because it is executing along with Swipe movement. And I want this after Swipe end, but finger will not remove.
My code snippet :
-(void) gestureView:(UIView*)viewGesture {
UISwipeGestureRecognizer *swipeGestureSingleRight;
UISwipeGestureRecognizer *swipeGestureSingleLeft;
UISwipeGestureRecognizer *swipeGestureSingleUp;
UISwipeGestureRecognizer *swipeGestureSingleDown;
swipeGestureSingleUp = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeGestureSingle_Handle:)];
[swipeGestureSingleUp setDelegate:self];
[swipeGestureSingleUp setDirection:(UISwipeGestureRecognizerDirectionUp)];
[swipeGestureSingleUp setNumberOfTouchesRequired:1];
[viewGesture addGestureRecognizer:swipeGestureSingleUp];
swipeGestureSingleDown = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeGestureSingle_Handle:)];
[swipeGestureSingleDown setDelegate:self];
[swipeGestureSingleDown setDirection:(UISwipeGestureRecognizerDirectionDown)];
[swipeGestureSingleDown setNumberOfTouchesRequired:1];
[viewGesture addGestureRecognizer:swipeGestureSingleDown];
swipeGestureSingleRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeGestureSingle_Handle:)];
[swipeGestureSingleRight setDelegate:self];
[swipeGestureSingleRight setDirection:(UISwipeGestureRecognizerDirectionRight)];
[swipeGestureSingleRight setNumberOfTouchesRequired:1];
[viewGesture addGestureRecognizer:swipeGestureSingleRight];
swipeGestureSingleLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(swipeGestureSingle_Handle:)];
[swipeGestureSingleLeft setDelegate:self];
[swipeGestureSingleLeft setDirection:(UISwipeGestureRecognizerDirectionLeft)];
[swipeGestureSingleLeft setNumberOfTouchesRequired:1];
[viewGesture addGestureRecognizer:swipeGestureSingleLeft];
longPressGestureOnSwipe = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPressGesture_Handle:)];
longPressGestureOnSwipe.minimumPressDuration = 0.03;
longPressGestureOnSwipe.delegate = self;
[viewGesture addGestureRecognizer:longPressGestureOnSwipe];
isSwipeEnd = false;
[longPressGestureOnSwipe setEnabled:isSwipeEnd];
}
- (void)swipeGestureSingle_Handle:(UISwipeGestureRecognizer*)sender {
if (sender.state == UIGestureRecognizerStateEnded) {
singleTouchSwipeSenderDirection = sender.direction;
isSwipeEnd = true;
[longPressGestureOnSwipe setEnabled:isSwipeEnd];
}
}
-(void)longPressGesture_Handle:(UILongPressGestureRecognizer*)sender {
if (sender.state == UIGestureRecognizerStateEnded) {
isSwipeEnd = false;
[longPressGestureOnSwipe setEnabled:isSwipeEnd];
}
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
return YES;
}
- (void)touchesMoved:(NSSet*)touches withEvent:(UIEvent*)event {
if (isSwipeEnd) {
[super touchesBegan:touches withEvent:event];
} else {
return;
}
}
Please suggest me correction or solution for my requirement.
Thanks in advance!
I'm trying to add a UILongPressGestureRecognizer and a UITapGestureRecognizer to an IBOutletCollection of UIImageViews, but it's not working. Here's the code I'm using:
UILongPressGestureRecognizer *pressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(deleteImage:)];
UITapGestureRecognizer *tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(selectImage:)];
pressRecognizer.delegate = self;
tapRecognizer.delegate = self;
for (UIImageView *imageView in myImageViewCollection)
{
[imageView addGestureRecognizer:pressRecognizer];
[imageView addGestureRecognizer:tapRecognizer];
imageView.userInteractionEnabled = YES;
}
- (void)selectImage:(UITapGestureRecognizer *)sender
{
NSLog(#"Select");
}
- (void)deleteImage:(UILongPressGestureRecognizer *)sender
{
NSLog(#"Delete");
}
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
I've conformed to the UIGestureRecognizerDelegate. What am I doing wrong?
Refer to this question. Sounds like the same issue. I recreated your problem and the gesture recognizers are only bound to the last view.
I am adding a UITapGestureRecognizer to my application to detect a double tap gesture.
UITapGestureRecognizer *tapgr = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(handleTapGesture:)];
tapgr.numberOfTaps = 2;
tapgr.delegate = self;
[_view addGestureRecognizer:tapgr];
[tapgr release];
This is working fine unless I show a tooltip in my application. They are set up like this:
[_view.toolTipView addTarget:self action:#selector(handleTap:) forControlEvents:UIControlEventTouchUpInside];
Before the introduction of my gesture recognizer, these tooltips where clickable and reacted, now they aren't reacting anymore...
How can I make a gesture recognizer and a standard UIControlEventTouchUpInside-Setup work together?
I found a solution:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch
{
if (gestureRecognizer == tapgr) {
return ![touch.view isKindOfClass:[UIControl class]];
}
return YES;
}
This method prevents the GestureRecognizer from being fired when a UIControl (i.e. Button) is pressed.
if you want the _view can respond single tap and Double tap together, you can try this
UITapGestureRecognizer * singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleSingleTap:)];
UITapGestureRecognizer * doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleDoubleTap:)];
[doubleTap setNumberOfTapsRequired:2];
//Add this code to disable double tap and only responds to single tap when user tap the _view just once time
[singleTap requireGestureRecognizerToFail:doubleTap];
[self addGestureRecognizer:doubleTap];
[self addGestureRecognizer:singleTap];
[singleTap release];
[doubleTap release];
if you want to use TouchEvent try UIControlEventTouchDownRepeat
[button addTarget:self actionselector(multipleTap:withEvent:) forControlEvents:UIControlEventTouchDownRepeat];
//Try to check wheather is doulbe tap or single tap.
-(IBAction)multipleTap:(id)sender withEvent:(UIEvent*)event {
UITouch* touch = [[event allTouches] anyObject];
if (touch.tapCount == 2) {
// do action.
}
}
You can't do that. I think you should choose another way to implement that.
I have a view which needs to handle pan, tap, and swipe gestures. I have pan and tap working, but when I add swipe, it doesn't work. Curiously, it seems that tap somehow blocks the swipes because if I remove the tap, then swipe works fine. Here's how I create my gesture recognizers.
- (void) initGestureHandlers
{
UISwipeGestureRecognizer *swipeLeftGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeLeftGesture:)];
swipeLeftGesture.numberOfTouchesRequired = 1;
swipeLeftGesture.direction = UISwipeGestureRecognizerDirectionLeft;
[self addGestureRecognizer:swipeLeftGesture];
UISwipeGestureRecognizer *swipeRightGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeRightGesture:)];
swipeRightGesture.numberOfTouchesRequired = 1;
swipeRightGesture.direction = UISwipeGestureRecognizerDirectionRight;
[self addGestureRecognizer:swipeRightGesture];
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)];
[tapGesture setNumberOfTapsRequired:1];
[self addGestureRecognizer:tapGesture];
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handlePanGesture:)];
[self addGestureRecognizer:panGesture];
}
A lot of blog suggest using requireGestureRecognizerToFail to handle the case where tap fires before the double tap fires, so I tried that, but it also didn't work.
[tapGesture requireGestureRecognizerToFail:swipeLeftGesture];
[tapGesture requireGestureRecognizerToFail:swipeRightGesture];
How can I get tap and swipe in the same view?
comment or remove the lines
//[tapGesture requireGestureRecognizerToFail:swipeLeftGesture];
//[tapGesture requireGestureRecognizerToFail:swipeRightGesture];
Also set the all the guesture objects delegate to self. like this
- (void) initGestureHandlers
{
UISwipeGestureRecognizer *swipeLeftGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeLeftGesture:)];
swipeLeftGesture.numberOfTouchesRequired = 1;
swipeLeftGesture.direction = UISwipeGestureRecognizerDirectionLeft;
swipeLeftGesture.delegate = self;
[self addGestureRecognizer:swipeLeftGesture];
UISwipeGestureRecognizer *swipeRightGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeRightGesture:)];
swipeRightGesture.numberOfTouchesRequired = 1;
swipeRightGesture = self;
swipeRightGesture.direction = UISwipeGestureRecognizerDirectionRight;
[self addGestureRecognizer:swipeRightGesture];
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)];
[tapGesture setNumberOfTapsRequired:1];
[self addGestureRecognizer:tapGesture];
tapGesture.delegate = self;
UIPanGestureRecognizer *panGesture = [[UIPanGestureRecognizer alloc] initWithTarget:self action:#selector(handlePanGesture:)];
[self addGestureRecognizer:panGesture];
panGesture.delegate = self;
}
Implement the delegate method like this
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
return YES;
}
put this one and try it,
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer;
{
return YES;
}
I have two gesture recognizers that recognize a swipe right gesture and a long press gesture. I tried to use the delegate method gestureRecognizer:shouldRecognizeSimultaneouslyWithGestureRecognizer: but whenever I perform the swipe and long press gestures the method is called many times instead of once. I use the following code for setting up the gesture recognizers, calling the delegate method, and handling the gestures once they are performed.
//Setting up the swipe gesture recognizer
UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeRight:)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
swipeRight.delegate = self;
[self addGestureRecognizer:swipeRight];
//Setting up the long press gesture recognizer
UILongPressGestureRecognizer *rightLongPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeRight:)];
rightLongPressRecognizer.delegate = self;
rightLongPressRecognizer.tag = PRESS_RIGHT_TAG;
[rightLongPressRecognizer setMinimumPressDuration:0.5];
[self addGestureRecognizer:rightLongPressRecognizer];
//Delegate method
-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
return YES;
}
//Method that the gestures call
-(void)handleSwipeRight: (UIGestureRecognizer *)recognizer {
self.player.direction = RIGHT;
[self resetSpriteView];
[self.playerSprite startAnimating];
float playerSpriteX = self.playerSprite.center.x;
float playerSpriteY = self.playerSprite.center.y;
self.toPoint = CGPointMake(playerSpriteX + TILE_WIDTH, playerSpriteY);
if(!([self checkIfPlayerHasReachedEnd])) {
self.fromPoint = CGPointMake(playerSpriteX, playerSpriteY);
CABasicAnimation *moveAnimation = [CABasicAnimation animation];
moveAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(playerSpriteX + TILE_WIDTH, playerSpriteY)];
[moveAnimation setDelegate:self];
[moveAnimation setFillMode:kCAFillModeForwards];
[moveAnimation setRemovedOnCompletion:NO];
[moveAnimation setDuration:MOVE_ANIMATION_DURATION];
[self.playerSprite.layer addAnimation:moveAnimation forKey:#"position"];
}
}
Is there a better way to implement a swipe and hold gesture recognizer?
I think here the problem is the mis-conception of what the delegate does, and what the method is called, when the gesture is performed, actually is, nothing else.
Handle the long press in another method:
UILongPressGestureRecognizer *rightLongPressRecognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(handleLongPress:)];
And handle the swipe gesture in it's own:
UISwipeGestureRecognizer *swipeRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeRight:)];