How can I get a button tap for a button which is located in a UIScrollView, but in its initially non-visible area?
Solved
Problem was that the content was visible within a non-clipped view - therefore not getting touches.
I think you should add an action (yourAction in the code below) to the UIButton.
programmatically:
[button addTarget:self action:#selector(yourAction:) forControlEvents:UIControlEventTouchUpInside];
-(void)yourAction:(id)sender{
// your code
}
With the gui builder you should connect your UIButton to an action defined as IBAction in your .h controller file:
-(IBAction)yourAction:(id)sender;
Related
I want to make a certain section of my UIView clickable. When clicked, it triggers an IBAction, as would an UIButton.
How do I do this?
Add Custom UIButton on your view, what ever position you need to clickable, Then perform
action on it.
UIButton *button = [UIButton buttonWithType:0];
[button setFrame:CGRectmake(0,0,0,0)]; //What ever clickable area, provide here
[button addTarget:self action:#selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
Using UITapGestureRecognizer and put transparent button over the area where you want clickable section available
Add UITapGestureRecognizer to your UIView. When you receive a tap, check your recognizer's locationInView:. Trigger the action if the tap happened in the area that you would like to make tap-sensitive; otherwise, ignore the tap event.
I have a UIButton and a UIView that animates, sliding down when the UIButton is pressed. The problem is that the UIView obscures the UIButton. I'd like the UIButton to always remain on top.
I tried this in the viewDidLoad:
[self.view bringSubviewToFront:categoryBtn];
doesn't work though.
thanks for any help
After Add any UIView or any other view on your this mainview , after that just add your this line for brings as a supeview for button
[self.view bringSubviewToFront:categoryBtn];
For Example on button action event you add any view then use code like bellow..
-(IBAction)yourButton_Clicked:(id)sender
{
///Add some code or view here and then after write this line here see bellow line
[self.view bringSubviewToFront:categoryBtn];
}
The other answer is will work, but this is exactly the kind of thing "insertSubview: belowSubview" was added for.
[self.view insertSubview:myNewView belowSubview:_categoryBtn];
This allows you to add the new view below the button on the view stack instead of adding it above the button and then rearranging the views.
I would like to reproduce a Tweetbot like navigation bar.
I'm still searching if it's possible to place an UIButton in place of title in an UINavigationBar bar and to make it fits perfectly between right and left buttons like it is done in Tweetbot application.
When I try to do this, over a certain size the self.navigationItem.titleView is resized down automatically
Tell me if I miss something evident,
Thank you
I provide two screenshots to let you see what I'm talking about
They've probably rolled in their own implementation of UINavigationBar and/or UINavigationController. I guess it's not worth trying to hack UIKit that much, since it will be very fragile and not future-proof.
You can add a button to the navigation item's title view property, which accepts an UIView, and since a UIButton is a subclass of an UIView this is not an issue.
Alternatively, if you are using storyboard, just drag a button to the center of the navigation bar, it's that easy.
// Create the button, and specify the type
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
// Set the button's frame
button.frame = CGRectMake(0.0f, 0.0f, 30.0f, 30.0f);
// Set your custom image for the button
[button setImage:[UIImage imageNamed:#"YOUR_IMAGE_NAME"] forState:UIControlStateNormal];
// Set the button's action, which is the method that will be called when it is pressed
[button addTarget:self action:#selector(doSomething:) forControlEvents:UIControlEventTouchUpInside];
// Add the button to the navigation bar's title view
[self.navigationItem.titleView addSubview:button];
SDK Reference:
https://developer.apple.com/library/ios/#documentation/UIKit/Reference/UINavigationItem_Class/Reference/UINavigationItem.html
Have you try to set autoresizesSubviews to YES on titleView, then set the correct autoresizing masks on the UIButton? If this doesn't work I suggest you to create your custom view subclass and override -layoutSubviews to fit your needs.
I have a uitextview and for some reasons I would it was not editable but that it became editable when the user touches it. I thought to put on it another view or a button in a such way that this view or button intercepts the user touch and passes it to the uitextview.
Is it possible? How could I make a such transparent view or button?
Thanks,
Fran
ummm, did you mean, you want the UITextView to be not editable, but the view or button should catch the tap? why??
but yep you can,
just create a UIButton with [button backgroundColor:[UIColor clearColor]]; then catch the button tap and in that method call [textview becomeFirstResponder];
but if you are doing this roundabout thing just because for unknown reason, the UITextView is uneditable by tapping, try setting [textView setUserInteractionEnabled:YES];
or maybe some other views frame is covering the textview and is not letting the tap event through to the uitextview. try putting it on top of everything not below.
I want to add my buttons in a UIView, like then I can hide or not them.
My button's code:
carte1J1=[UIButton buttonWithType:UIButtonTypeCustom];
carte1J1.tag=11;
carte1J1.frame=CGRectMake(60, 240, 50, 73.0);
[carte1J1 setImage:[UIImage imageNamed:[NSString stringWithFormat:#"%#",imagecarte1] ] forState:UIControlStateNormal] ;
[carte1J1 addTarget:self action:#selector (clicCarte1J1) forControlEvents:UIControlEventTouchUpInside];
[self.view insertSubview:carte1J1 atIndex:1];
My view is viewJoueur1, I try to add my button in the view like this.
[viewJoueur1 addSubview:carte1J1];
And to test I try to hide viewJoueur1:
viewJoueur1.hidden=YES;
But the button is still visible and I don't understand why
In the first section of code that you listed, you have:
[self.view insertSubview:carte1J1 atIndex:1];
In the second section, you have:
[viewJoueur1 addSubview:carte1J1];
So, you've added cartelJ1 to two views if I'm understanding correctly.
Then, you hide one of those two views, but self.view is still visible, and it contains cartelJ1, so cartelJ1 is still visible.
Please correct me if I'm misunderstanding your code...
You’re right, that isn’t the documented behavior:
Hiding a view with subviews has the
effect of hiding those subviews and
any view descendants they might have.
You’re adding carte1J1 as a subview of viewJoueur1; is viewJoueur1 a plain UIView or a custom subclass? If it’s a subclass, have you overridden -setHidden:?
If it’s a standard UIView, then this behavior is not as documented and you should report it as a bug.
One thing that I notice is that when you create the button, you add it as a subview of self.view, then later add it as a subview of viewJoueur1. Views can only be a subview of one view at a time, so the first one is redundant.