I have a problem - my app got rejected 3 times for the same reason, "Selecting the Action button does not produce an action". Apple said the "share button" isn't working as well.
On my devices (ipod 4 + ipod 5) and the iphone simulation, the share button works, and opens an action sheet view with 3 options to choose from, and they all work fine.
The share button is a UIBarButtonItem and stand on the UINavigationBar.
the back button and the star button work great, but still the share button is not responding and doesn't produce any action.
This is my app screenshot.
This is my button code:
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeCustom];
rightButton.frame = CGRectMake(0, 0, 33, 22);
[rightButton setBackgroundImage:[UIImage imageNamed:#"btn_share.png"] forState:UIControlStateNormal];
[rightButton setBackgroundImage:[UIImage imageNamed:#"btn_shareSelect.png"] forState:UIControlStateHighlighted];
[rightButton addTarget:self action:#selector(share) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithCustomView:rightButton];
self.navigationItem.rightBarButtonItem=rightItem;
What can I do? Is there a way to solve this?
Can you reproduce the problem yourself? It would be a good start.
I think you may be having a problem because you're adding a target to the UIButton custom view and not the actual bar button item.
So please try setting the action and target properties on the UIbarButtonItem itself. Be sure to remove the rightButton addTarget line.
If that doesn't work, I'd then try not using a UIbutton for the custom view.
Btw, why aren't you just using UIBarButtonItem initWithBarButtonSystemItem:? i think the "action" style will give you the look you want, with less hassle.
Related
I would like to create a bottom UIToolbar on iPad like Photo and AppStore apps. A taller toolbar whit custom UIBarButtonItem with image above text.
The problem is that I can't resize the 44px height in the .xib and if I try to change frame programmatically doesn't work.
Ideas ?
Edit
I want replace this interface with UIToolbar because the tab bar behavior is not what I need : I don't have many view controllers, but only functionalities that I want call from UIBarButtonItem.
Create a Image with your logo and text in it, assign it to a custom UIButton and assign it to UIBarButtomItem using initWithCustomView
UIImage *customImage = [UIImage imageNamed:#"yourCustomImage"];
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
backButton.frame = CGRectMake(0, 0, customImage.size.width, customImage.size.height);
[backButton setImage:[UIImage imageNamed:#"yourCustomImage"] forState:UIControlStateNormal];
[backButton addTarget:self action:#selector(showPreviousView) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customBarButton = [[UIBarButtonItem alloc]initWithCustomView:customButton];
Hope this helps You..
I want to stop somebody going back on my Navigation Controller if they haven't saved their changes. Most posts on SO discuss overriding the back button (with a variety of techniques to do this). However, iOS7 allows you to now swipe to go back in a navigationViewController...
I did see the UINavigationControllerDelegate which looks like the right type of delegate I'd want to implement but I see no way to cancel a navigation action. Any ideas how to do this?
Unfortunately nothing changed in iOS7, you still need to fake your back button if you want to put some check into it.
By the way it easier now since you don't need to fake the arrow button.
Edit:
to do that:
UIButton *backButton = [[UIButton alloc] initWithFrame: CGRectMake(0, 0, 44.0f, 30.0f)];
[backButton setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[backButton addTarget:self action:#selector(popVC) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
I am trying to customize the Navigation Bar by adding a custom button to the rightBarButtonItem. Creating one is pretty straight forward.
UIImage *myImage = [UIImage imageNamed:#"menu-icon.png"];
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setFrame:CGRectMake(0, 0, myImage.size.width, myImage.size.height)];
[myButton setBackgroundImage:myImage forState:UIControlStateNormal];
UIBarButtonItem *myButtonItem = [[UIBarButtonItem alloc] initWithCustomView:myButton];
[navItem setLeftBarButtonItem:myButtonItem animated:YES];
Looks good, except that now I can't set the target or action properties. The following code does nothing:
myButtonItem.target = myTarget;
myButtonItem.action = #selector(myButtonAction);
I found that the reason it's not working is because I initialized the UIBarButtonItem with -initWithCustomView. Apples documentation says:
The bar button item created by this method does not call the action method of its target in response to user interactions. Instead, the bar button item expects the specified custom view to handle any user interactions and provide an appropriate response.
I'm a little confused by what exactly apple means by that. Am I supposed to create a custom control or something? I haven't really done that yet and I'm not sure where to start.
Does anyone have any suggestions on how to do this or an alternative way to set up a custom Navigation Bar Button?
ANSWERED----------------------------------------------------------
Just had to add this method to the UIButton:
[myButton addTarget:myTarget action:#selector(myButtonAction) forControlEvents:UIControlEventTouchUpInside];
It's pretty straight forward, you need to add target for uibutton not for uibarbuttonitem.
To explain more what you want for uibarbuttonitem is respond touch up inside action method, as documentation says that you need to do that for uibutton as you are initializing your uibarbuttonitem with custom view in your case uibutton.
Add an action and target to a UIButton like this:
[myButton addTarget:self
action:#selector(handleMyButtonTap)
forControlEvents:UIControlEventTouchUpInside];
Add an action and target to a UIBarButtonItem like this:
[myBarButtonItem setAction:#selector(handleBarButtonTap)];
[myBarButtonItem setTarget:aTarget];
With the help of answers by hgwhittle and Mustafa I implemented and it works perfect
here is the complete snip may help someone
//Create ImageButton
UIImage *shareBtnIcon = [UIImage imageNamed:#"dummy_share_icon_22"];
UIButton *shareButton = [UIButton buttonWithType:UIButtonTypeCustom];
[shareButton setFrame:CGRectMake(0, 0, shareBtnIcon.size.width, shareBtnIcon.size.height)];
[shareButton setBackgroundImage:shareBtnIcon forState:UIControlStateNormal];
[shareButton addTarget:self action:#selector(shareButtonClicked:) forControlEvents:UIControlEventTouchUpInside];
//Create BarButton using ImageButton
UIBarButtonItem *shareBarBtn = [[UIBarButtonItem alloc] initWithCustomView:shareButton];
//Add BarButton to NavigationBar
self.navigationItem.rightBarButtonItems = [[NSArray alloc] initWithObjects:shareBarBtn, nil];
//method for share butto click
-(void) shareButtonClicked:(UIButton*)sender
{
NSLog(#"you clicked on share button %ld");
}
I am having navigation bar with custom view as right bar button item. Custom view has two buttons in it. But when i touch area below navigation bar on right side it fires button touch event. I have checked frames of buttons and view by changing background color all are set perfectly.
I checked for default iOS apps like clock, calendar, setting, notes etc they all have same behaviour. Touching in red rectangle in screenshots(of default iOS calendar app.) fires touch event of button same is happening with my app too..
Here is code..
UIView* navigationButtonsView = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 100.0f, 44.0f)];
UIButton *p = [UIButton buttonWithType:UIButtonTypeCustom];
[p setImage:[UIImage imageNamed:#"PBtn.png"] forState:UIControlStateNormal];
[p addTarget:self action:#selector(PButtonPushed:) forControlEvents:UIControlEventTouchUpInside];
[p setFrame:CGRectMake(43, 0, 57, 44)];
[navigationButtonsView addSubview:p];
UIButton *o = [UIButton buttonWithType:UIButtonTypeCustom];
[o addTarget:self action:#selector(oButtonPushed:) forControlEvents:UIControlEventTouchUpInside];
[o setFrame:CGRectMake(0, 0, 38, 44)];
[o setImage:[UIImage imageNamed:#"O.png"] forState:UIControlStateNormal];
[navigationButtonsView addSubview:o];
UIBarButtonItem *barItem = [[UIBarButtonItem alloc] initWithCustomView:navigationButtonsView];
[musicVC.navigationItem setRightBarButtonItem: barItem animated:NO];
How to change this default iOS behaviour for navigation bar buttons ? Because m having some UI right below these buttons and its top area not responding because of this.
Thanks in advance..
This is normal behavior - two reasons:
iOS doesn't know how big your finger is - so it has to decide where to put the touch. In this case, nav bar overrides table view.
This may have something to do with the Human Interface Guidelines (sorry, no link. Google it) that say that the minimum touchable area must be 44px. This behavior may be the 'UIBarButtonItem' trying to conform with these requirements.
I'm working in Xcode 4.3.2 using storyboards. I've created a segue between two views by clicking on the button I want to create a segue and control+click+drag a connection to the next view controller. Of course this creates an automatic/default back button in the navigation bar in the next view controller. What I want to do is customize the look of this back button. SO, I looked around online and found this code:
self.navigationItem.hidesBackButton = YES;
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 4, 40, 40)];
[button setImage:[UIImage imageNamed:#"homeButton.png"] forState:UIControlStateNormal];
[button addTarget:self action:#selector(backAction) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *back = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.leftBarButtonItem = back;
It works great to change the LOOK of the button, but the problem now is that when I click that button, Xcode throws an error: "unrecognized error sent to instance..."
Can anyone help me to figure out how to now add the proper functionality to my custom back button? Thanks.
Have you implemented the method - (void)backAction?
To make the back button behave as such with a navigation controller, A possible implementation could look like:
- (void)backAction {
[self.navigationController popViewControllerAnimated:YES];
}
This may need to be tweaked depending on your app setup and what you want it to do when the button is pressed but it should be a good starting point