问题
In my view load I have two UILabels and I have added same tapGesture for both.If a particular label is tapped then its functionality should be performed.But I m unable to do so ?
-(void)viewDidLoad{
lblEditProfile.userInteractionEnabled = YES;
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelClicked:)];
[tapGestureRecognizer setNumberOfTapsRequired:1];
[lblEditProfile addGestureRecognizer:tapGestureRecognizer];
[tapGestureRecognizer release];
lblViewDetails.userInteractionEnabled = YES;
tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelClicked:)];
[tapGestureRecognizer setNumberOfTapsRequired:1];
[lblViewDetails addGestureRecognizer:tapGestureRecognizer];
[tapGestureRecognizer release];
}
-(IBAction)labelClicked:(UITapGestureRecognizer*)tapGestureRecognizer
{
currentLabel = (UILabel *)tapGestureRecognizer.view;
NSLog(@"tap %@",tapGestureRecognizer.view);
if(currentLabel.text==@"Edit Profile")
{
UserProfile *userProfile = [[UserProfile alloc] initWithNibName:@"UserProfile" bundle:nil];
userProfile.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:userProfile animated:YES];
[userProfile release];
}
else
{
ViewDetails *viewDetails = [[ViewDetails alloc] initWithNibName:@"UserAppointments" bundle:nil];
viewDetails.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController: viewDetails animated:YES];
[viewDetails release];
}
}
But when I click on EditProfile label it is going to else block.
How can I recognize which Label is clicked and correspondingly perform required action?
回答1:
Check like this:
if(currentLabel == lblEditProfile)
//code here
else
//code here
回答2:
Use Tag format like this. Which will be efficient
-(void)viewDidLoad{
lblEditProfile.userInteractionEnabled = YES;
lblEditProfile.tag = 1;
UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelClicked:)];
[tapGestureRecognizer setNumberOfTapsRequired:1];
[lblEditProfile addGestureRecognizer:tapGestureRecognizer];
[tapGestureRecognizer release];
lblViewDetails.userInteractionEnabled = YES;
lblViewDetails.tag = 2;
tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelClicked:)];
[tapGestureRecognizer setNumberOfTapsRequired:1];
[lblViewDetails addGestureRecognizer:tapGestureRecognizer];
[tapGestureRecognizer release];
}
-(IBAction)labelClicked:(UITapGestureRecognizer*)tapGestureRecognizer
{
currentLabel = (UILabel *)tapGestureRecognizer.view;
NSLog(@"tap %d",tapGestureRecognizer.tag);
if(currentLabel.tag == 1)
{
UserProfile *userProfile = [[UserProfile alloc] initWithNibName:@"UserProfile" bundle:nil];
userProfile.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:userProfile animated:YES];
[userProfile release];
}
else if(currentLabel.tag == 2)
{
ViewDetails *viewDetails = [[ViewDetails alloc] initWithNibName:@"UserAppointments" bundle:nil];
viewDetails.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController: viewDetails animated:YES];
[viewDetails release];
}
}
来源：https://stackoverflow.com/questions/14081466/recognizing-multiple-uilabels-tap-for-uitapgesturerecogniser