I want to make a tableview in which i want jobs will change to swipe left and right .
By default in iphone swipe is for delete,so how can i make this.
i used gesture for that, but it does not look any transition in tableview,just swipe only,I want swipe transition will show like we are swapping.
Please help !
Method For Left Swipe
UISwipeGestureRecognizer * swipeleft=[[UISwipeGestureRecognizer alloc]initWithTarget:self action:#selector(swipeleft:)];
swipeleft.direction=UISwipeGestureRecognizerDirectionLeft;
[yourtableviewName addGestureRecognizer:swipeleft];
Method For Right Swipe
UISwipeGestureRecognizer *gesture = [[UISwipeGestureRecognizer alloc]
initWithTarget:self action:#selector(swiperight:)];
[gesture setDirection:UISwipeGestureRecognizerDirectionRight];
[tblvie addGestureRecognizer:gesture];
left Swipe Action Method
-(void)swipeleft:(UISwipeGestureRecognizer*)recognizer
{
int tag = (int)recognizer.view.tag; // assign the tag if u need
if (tag==40)
{
// call the another function
}
else
{
// call the some another function
}
[yourtableview reloadData];
}
Right Swipe Action Method
-(void)swiperight:(UISwipeGestureRecognizer*)recognizer
{
int tag = (int)recognizer.view.tag; // assign the tag if u need
if (tag==40)
{
// call the another function
}
else
{
// call the some another function
}
[yourtableview reloadData];
}
Related
I am new at iPhone programming (Objective C). I wanted to make button which will be visible on long pressing on another button. Just like system keyboard style. I should choose first or second button by holding my finger on them :-) How can I do this, I could not find tutorials. Thanks
create and attach the UILongPressGestureRecognizer instance to your UIButton.
-(IBAction)SelectImage:(id)sender
{
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:#selector(longPressMethod:)];
[self.button addGestureRecognizer:longPress];
}
Then create the method that handles the gesture
- (void)longPressMethod:(UILongPressGestureRecognizer*)gesture
{
if ( gesture.state == UIGestureRecognizerStateEnded )
{
NSLog(#"Long Press");
//Do your code here what you want to perform
}
}
I'm trying to track hits on UI elements (tap and long press) using UIGestureRecognizer. After hit was tracked (let's say logged via NSLog) UI element should do it's job.
I'm creating gesture recognizers like this:
UITapGestureRecognizer* tap = [[UITapGestureRecognizer] alloc initWithTarget:self action:(OnGesture:)]
tap.cancelsTouchesInView = NO;
tap.delegate = self;
[view addGestureRecognizer:tap];
UILongPressGestureRecognizer* longPress = [[UILongPressGestureRecognizer] alloc initWithTarget:self action:(OnGesture:)]
longPress.cancelsTouchesInView = NO;
longPress.delegate = self;
[view addGestureRecognizer:longPress];
I've overridden some gesture recognizer methods:
-(BOOL)gestureRecognizer:(UIGestureRecognizer*)_recognizer shouldReceiveTouch(UITouch*)_touch
{
return YES;
}
-(BOOL)gestureRecognizer:(UIGestureRecognizer*)_recognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer*)_otherRecognizer
{
return YES;
}
Inside the gesture recognizer handler, I'm trying to find the exact subview of the tap by using the hitTest method.
-(void)OnGesture:(UIGestureRecognizer*)_recognizer
{
if([_recognizer.state == UIGestureRecognizerStateEnded])
{
if([_recognizer isKindOfClass:[UITapGestureRecognizer class]]
|| [_recognizer isKindOfClass:[UILongPressGestureRecognizer class])
{
CGPoint location = [_recognizer locationOfTouch:0 inView:_recognizer.view];
// my problem occurs here:
//---------------------------------------------------------------------------
UIView* hitView = [_recognizer.view hitTest:location withEvent:nil];
//---------------------------------------------------------------------------
NSLog(#"Hit on view: %#", hitView);
}
}
}
So my problem is:
Sometimes (1 out of 10 cases) when I press the UIButton OnGesture method fires, but the IBAction of the "Touch Up Inside" event of that button is not firing.
But when I comment out hitTest call:
//UIView* hitView = [_recognizer.view hitTest:location withEvent:nil];
the bug stops being reproducible. IBAction always gets called.
Why is this happening? How can I fix this?
P.S. there could be some typos in the sample code above.
According to the docs, in order for it to work:
This method ignores view objects that are hidden, that have disabled user interactions, or have an alpha level less than 0.01. This method does not take the view’s content into account when determining a hit. Thus, a view can still be returned even if the specified point is in a transparent portion of that view’s content.
So you might wanna do self.someSubview.userInteractionEnabled = YES;
I would like to know how can I send a swipe gesture programmatically without actually swiping the phone. For instance, I have button that in the onClick event I would call swipeGestureRecognizer? Is this possible?
You can call the method you are calling on Swipe, when user taps on button. For examaple, you have a method for swipe gesture, call it onSwipe . Now call onSwipe methos when user taps on the button. Thats it
EDIT
Here is the code for you:
-(void)myMethod{
//Write the logic you want to implement for swipe gesture here.
}
-(IBAction)onClick(UIButton *)sender{
[self myMethod];
}
-(IBAction)onSwipe:(UISwipeGestureRecognizer *)recognizer{
[self myMethod];
}
There might be bugs on the code as I am just typing the code using windows. Correct it for yourself in MAC & edit the answer too. it would definitely work for you
If you need to pass the gesture event to the handler, then
UISwipeGestureRecognizer *gesture = [[UISwipeGestureRecognizer alloc] init];
gesture.direction = UISwipeGestureRecognizerDirectionLeft;
[self handleSwipe:gesture];
I am working on application for jokes and I have one feature still missing which is showing jokes text view on the same way of showing photos in Iphone, one by one, and having the user slide the finger from right to left, or vice versa :
Does anyone has an example or knows of one?
You're looking for a UIPageViewController if I'm understanding what you're asking.
Setting up a UIPageViewController is pretty easy.
UIPageViewController *pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
Then simply set the delegate, and create the respective delegate methods, and you're all set!
delegate methods can be referenced from UIPageViewController's class reference.
Good luck! And welcome to Stack Overflow!
Do this for detecting swipes:
UISwipeGestureRecognizer *swipeLeftRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeFrom:)];
swipeLeftRecognizer.direction = UISwipeGestureRecognizerDirectionLeft;
UISwipeGestureRecognizer *swipeRightRecognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeFrom:)];
swipeLeftRecognizer.direction = UISwipeGestureRecognizerDirectionRight;
// Add it to the view you want
[self.view addGestureRecognizer:swipeLeftRecognizer];
[self.view addGestureRecognizer:swipeRightRecognizer];
//the handler code:
- (void)handleSwipeFrom:(UISwipeGestureRecognizer *)recognizer {
if (recognizer.direction == UISwipeGestureRecognizerDirectionLeft) {
//do something when swiped left.
}
else if (recognizer.direction == UISwipeGestureRecognizerDirectionRight)
{
//do something when swiped right.
}
}
In my app I have this code:
- (BOOL)gestureRecognizer:(UIGestureRecognizer *)recognizer shouldReceiveTouch:(UITouch *)touch
{
if ([touch.view isKindOfClass:[UIScrollView class]]){
return YES;
}
else return NO;
}
In this I control if my touch is inside a scrollView or not but now I want to check if the touch is a simple touch or is a swipe gesture, is there a way to detect it?
thanks
The method you written above is UIGestureRecognizerDelegate. This is a delegate method will get called when particular gesture on which you put an observer, gets detected.
In order to identify swipe gesture, you have to add Gesture recognizer to View on which you want to detect as below:
UISwipeGestureRecognizer *recognizer = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(handleSwipeFrom:)];
[recognizer setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view] addGestureRecognizer:recognizer];
[recognizer release];
You can get gesture detection in method handleSwipeForm:
If you want to get the above delegate to get called then also add this line,
recognizer.delegate = self;
Use UISwipeGestureRecognizer to detect swipe gestures (you can set the swipe direction: UISwipeGestureRecognizer.direction)
And a UITapGestureRecognizer to detect taps (UITapGestureRecognizer.numberOfTapsRequired sets the required number of taps to trigger the recognizer (e. g. for double-taps)
You have to use UISwipeGestureRecognizer in order to detect swipe gestures .
UISwipeGestureRecognizer *swipeGest= [[UISwipeGestureRecognizer alloc] initWithTarget:self action:#selector(SwipeRecognizer:)];
[swipeGest setDirection:(UISwipeGestureRecognizerDirectionRight)];
[[self view] addGestureRecognizer:swipeGest];
swipeGest.delegate = self;
setDirection is used to set the swipe detect direction.
- (void)SwipeRecognizer:(UIGestureRecognizer *)gestureRecognizer
{
}
Here we will be writing the function to do after detecting the swipe gesture.