Two UITapGestureRecognizer in on UIView - iphone

I want to add to my UIViewController :
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)];
tapGesture.numberOfTapsRequired = 2;
[self.view addGestureRecognizer:tapGesture];
[tapGesture release];
UITapGestureRecognizer *tapGesture2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture2:)];
tapGesture2.numberOfTapsRequired = 1;
[self.view addGestureRecognizer:tapGesture2];
[tapGesture2 release];
the problem is if the user tap twice the two methods are called,and i want that if the user make double tap only the first(handleTapGesture) will be called and if he make one tap it will call only the second one(handleTapGesture2)

use this one..
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture)];
tapGesture.numberOfTapsRequired = 2;
[self.view addGestureRecognizer:tapGesture];
[tapGesture release];
UITapGestureRecognizer *tapGesture2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture2)];
tapGesture2.numberOfTapsRequired = 1;
[tapGesture2 requireGestureRecognizerToFail: tapGesture];
[self.view addGestureRecognizer:tapGesture2];
[tapGesture2 release];

you can use the code i posted on here
in this the method requireGestureRecognizerToFail: is used in viewcontroller.m this will solve your problem

Related

UITapGestureRecognizer.numberOfTapsRequired = 2 not working

I added UITapGestureRecognizer for UIImageView in both single tap and double tap. for single tap method A will call and for double tap method B will call.
its working perfectly for first time only.
First Time
If i made single tap on UIImageView, method A called as expected.
If i made double tap on UIImageView, method B called as expected.
Second Time
If i made single tap on UIImageView, method A called as expected.
If i made double tap on UIImageView, method B not called again method A only called.
I do not know where i am making problem.
UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(hideHandle:)];
[gestureRecognizer setDelegate:self];
[userResizableView addGestureRecognizer:gestureRecognizer];
[gestureRecognizer release];
UITapGestureRecognizer *gestureRecognizer1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTap:)];
gestureRecognizer1.numberOfTapsRequired = 2;
[gestureRecognizer1 setDelegate:self];
[userResizableView addGestureRecognizer:gestureRecognizer1];
[gestureRecognizer1 release];
[gestureRecognizer requireGestureRecognizerToFail:gestureRecognizer1];
I have tested your code and it worked fine!
You are adding requireGestureRecognizerToFail after releasing gestureRecognizer1. This shouldn't be an issue as I tested after following comments and edited this answer but give it a go. Also give some meaningful names to variables and methods.
UITapGestureRecognizer *doubleTapGestureRecognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(handleDoubleTap:)];
doubleTapGestureRecognizer.numberOfTapsRequired = 2;
[userResizableView addGestureRecognizer:doubleTapGestureRecognizer];
UITapGestureRecognizer *singleTapGestureRecognizer = [[UITapGestureRecognizer alloc]
initWithTarget:self action:#selector(handleSingleTap:)];
singleTapGestureRecognizer.numberOfTapsRequired = 1;
[singleTapGestureRecognizer requireGestureRecognizerToFail: doubleTapGestureRecognizer];
[userResizableView addGestureRecognizer:singleTapGestureRecognizer];
[doubleTapGestureRecognizer release];
[singleTapGestureRecognizer release];

UIWebview Gesture iOS

How can I identify the user touch, tap & double tap in the UIWebview. Is there any delegates available like touches begin etc?
here is the code to implement the single tap and double tap on webview
UITapGestureRecognizer *singleTap = [[[UITapGestureRecognizer alloc] initWithTarget: self action:#selector(doSingleTap)] autorelease];
singleTap.numberOfTapsRequired = 1;
[self.myWebView addGestureRecognizer:singleTap];
UITapGestureRecognizer *doubleTap = [[[UITapGestureRecognizer alloc] initWithTarget: self action:#selector(doDoubleTap)] autorelease];
doubleTap.numberOfTapsRequired = 2;
[self.myWebView addGestureRecognizer:doubleTap];
The below 3 links will solve your problem
how-to-add-a-gesture-recognizer-to-a-uiwebview-subclass
iphone-custom-gestures-on-your-uiwebview
does-uigesturerecognizer-work-on-a-uiwebview
About number of taps, you can set it through the property numberOfTapsRequired
Eg:
UITapGestureRecognizer *myGusture = [[[UITapGestureRecognizer alloc] initWithTarget: self action:#selector(doTap)] autorelease];
myGusture.numberOfTapsRequired = 1; //you can change it to any number as per your requirement.
[self.myWebView addGestureRecognizer:myGusture];
[myGusture release];
myGusture = nil;

How can i detect pinch and tap in map view?

all of you. I have been working on map view but i unable solve pinch and tap detection problem.I want to detect pinch and tap in map view.
I have tried following code in iPhone MapView
UITapGestureRecognizer *Tap= [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(checktap)];
[self.mapView addGestureRecognizer:Tap];
[Tap release];
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:#selector(checkpinch)];
[self.mapView addGestureRecognizer:pinch];
[pinch release];
Where tap is working but pinch detection is not working.
Please help me.
Thanks in Advanced.
Add following code in your view did load and add Gesture recognizer delegate in you .h file.
Enjoy...:)
[self.view insertSubview:mapView atIndex:0];
//Gesture reconizer
UIPinchGestureRecognizer *pinch = [[UIPinchGestureRecognizer alloc]initWithTarget:self action:#selector(checkpinch)];
[pinch setDelegate:self];
[pinch setDelaysTouchesBegan:YES];
[self.mapView addGestureRecognizer:pinch];
[pinch release];
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(checktap)];
[singleTap setDelegate:self];
singleTap.numberOfTapsRequired = 1;
singleTap.numberOfTouchesRequired =2;
[self.mapView addGestureRecognizer:singleTap];
[singleTap release];
UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc]initWithTarget:self action:#selector(checktap)];
[doubleTap setDelegate:self];
doubleTap.numberOfTapsRequired = 2;
doubleTap.numberOfTouchesRequired =1;
[self.mapView addGestureRecognizer:doubleTap];
[doubleTap release];

GestureRecognizers stop working after using presentModalViewController and dismissing

I am initializing my gesture recognizers with the following code when I initialize a view. However, after multiple times of presenting a view on top of the one with the gesture recognizers and dismissing it with presentModalViewController and dismissModelViewController, the gesture recognizers stop working on the original view. I've tried manually releasing the recognizers in the view's dealloc function rather than using autorelease, but it doesn't seem to help. Does anyone have any ideas? Thanks!
Also, I should mention that this problem only happens on the device, and not the simulator.
-(void) initializeGestures {
recognizer = [[[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)] autorelease];
//recognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(handleTapGesture:)];
[(UITapGestureRecognizer *)recognizer setNumberOfTouchesRequired:1];
[self.view addGestureRecognizer:recognizer];
recognizer.delegate = self;
swipeLeftGesture = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeGestureLeft:)] autorelease];
//swipeLeftGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeGestureLeft:)];
swipeLeftGesture.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeLeftGesture];
swipeLeftGesture.delegate = self;
swipeRightGesture = [[[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeGestureRight:)] autorelease];
//swipeRightGesture = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeGestureRight:)];
swipeRightGesture.direction = UISwipeGestureRecognizerDirectionRight; // default
[self.view addGestureRecognizer:swipeRightGesture];
swipeRightGesture.delegate = self;
}
-(IBAction) handleSwipeGestureLeft:(UISwipeGestureRecognizer*)sender
{
[self swipeLeft];
}
-(IBAction) handleSwipeGestureRight:(UISwipeGestureRecognizer*)sender
{
[self swipeRight];
}
-(IBAction) handleTapGesture:(UITapGestureRecognizer *) sender {
[self gotoDefinition];
}
did the view with gesture recognizers dealloc when you present another viewController?
this will cause the view remove gesture recognizers on it

UILongPressGestureRecognizer of Superview gets called instead of Subview

i got a strange problem. I got a Superview with customcontrols as subviews.
Their are GestureRecognizer both in superview and subviews.
If i tap a subview its GestureRecognizer gets called and on tap on the superview its tap gets called.
but on long press in the subview SOMETIMES the GestureRecognizer of the superview gets called. I add the GestureRecognizers in the same functions but there is a different attitude.
Superview
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(tapPiece:)];
tapGesture.numberOfTapsRequired = 1;
//contenView is the area where my controls can be
[self.contentView addGestureRecognizer:tapGesture];
[tapGesture release];
UILongPressGestureRecognizer *longTapGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longTapPiece:)];
tapGesture.numberOfTapsRequired = 1;
[self.contentView addGestureRecognizer:longTapGesture];
[longTapGesture release];
Subviews
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(selectPiece:)];
tapGesture.numberOfTapsRequired = 1;
[self addGestureRecognizer:tapGesture];
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPiece:)];
longPressGesture.numberOfTapsRequired = 1;
[self addGestureRecognizer:longPressGesture];
Can anyone tell me why the longtap doen't response to my subview and how to fix it.
THANK YOU
got a solution but this is not what i wanted i set the duration of the control lower than the one of the superview [longPressGesture setMinimumPressDuration:0.4]; But the gestureRecognizer should be independend