Anyone have code to substitute for UILongPressGestureRecognizer? - iphone

Question

I'd like to support pre 3.2 and this is the only symbol that doesn't want to cooperate, anyone know of some touchesmoved code or something i can use in lieu of the UILongPressGestureRecognizer?
Thanks,
Nick

Answer 1

As you know, you should use touchesBegan, Moved, Ended, and Canceled functions for pre 3.2 iOS.
I think implementing only touchesMoved is bad because if the user presses and doesn't move at all until releasing, then touchesMoved won't get called ever.
Instead, I used NSTimer to acheive a long press touch event.
This might not be an optimal solution, but it worked well for my app.
Here's a snippet of code.
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{
isAvailable = NO;
timer = [NSTimer scheduledTimerWithTimeInterval:DURATION target:self selector:#selector(didPassTime:) userInfo:nil repeats:NO];
}
- (void)didPassTime:(id)sender{
isAvailable = YES;
}
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
if(isAvailable == YES){
// still pressing after 0.5 seconds
}
else{
// still pressing before 0.5 seconds
}
}
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{
if(isAvailable == YES){
// releasing a finger after 0.5 seconds
}
else {
// releasing a finger before 0.5 seconds
[timer invalidate];
timer = nil;
}
}