I'm looking for a way to create programmatically an UIBarButtonItem that looks like a back button of UINavigationBar.
Apparently seems like that the back button appears only after a push on the UINavigationController.
So I'm able to insert only a button with the "cancel" style. But my goal is to create a button with the "New Item" style.
Ideas ?
the short answer is you cannot do it.
you can save an image and you can put the image to that position, but the back button is managed by private part of the UINavigationBar.
I think you need to use image. and then set the image be the buttons backgroundImage. such as :
navigationBar = [[UINavigationBar alloc] initWithFrame:CGRectMake(0, 0, 320, 44)];
UINavigationItem *navigationItem = [[[UINavigationItem alloc] initWithTitle:#"Detail"] autorelease];
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 70, 30)];
[button setImage:[UIImage imageNamed:#"plain.png"] forState:UIControlStateNormal];
[button addTarget:self action:#selector(buttonClicked:)
forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc]
initWithCustomView:button];
navigationItem.leftBarButtonItem = buttonItem;
[buttonItem release];
[button release];
[navigationBar pushNavigationItem:navigationItem animated:NO];
[self.view addSubview:navigationBar];
Take a look on this answer : Creating a left-arrow button (like UINavigationBar's "back" style) on a UIToolbar
It gives you a psd file with image that you need.
It works for me:
[self.navigationItem.leftBarButtonItem setTitle:#"Back"];
(custom text with back arrow)
Related
Here is my navigation bar
I had a problem about changing vertical position of Settings UIBarButtonItem on my navigation bar. I would like to move the button item "Settings" down
Here is my code
UIBarButtonItem *settingsItem = [[UIBarButtonItem alloc] initWithTitle:#"Settings" style:UIBarButtonItemStylePlain target:self action:nil];
self.navItem.rightBarButtonItem = settingsItem;
[[UIBarButtonItem appearance] setTitlePositionAdjustment:UIOffsetMake(0,-10) forBarMetrics:UIBarMetricsDefault];
I had tried it again and again. It seemed that it's not work
Could anyone suggest me how to move the button item "Settings" down ?
You can easily add a Custom Button to your NavigationBarItem, Here is the way,
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; //create custom Button
[button setTitle:#"Settings" forState:UIControlStateNormal];
[button.titleLabel setFont:[UIFont systemFontOfSize:14.0]];
[button setTitleColor:[UIColor colorWithRed:179.0/255.0 green:40.0/255.0 blue:18.0/255.0 alpha:1] forState:UIControlStateNormal];
button.frame = CGRectMake(0, 0, 50, 20); //Button frame
[button addTarget:self action:#selector(yourCustomSelectorHere) forControlEvents:UIControlEventTouchUpInside]; //Add action method to the button here
UIView *backButtonView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 63, 33)];
backButtonView.bounds = CGRectOffset(backButtonView.bounds, -14, -7);
[backButtonView addSubview:button];
UIBarButtonItem *barBtnItem = [[UIBarButtonItem alloc]initWithCustomView: backButtonView]; //set button as UIBarButtonItem
self.navigationItem.rightBarButtonItem = barBtnItem; //set barBtnItem to rightBarButtonItem
By changing backButtonView.bounds values you can change the origin of the Button
Cited from apple's documentation on UIAppearance protocol
iOS applies appearance changes when a view enters a window, it doesn’t
change the appearance of a view that’s already in a window.
So if your code of setting UIBarButtonItem's appearance is after the navigationItem assignment code. It won't work
Is it possible to change the back button on a UINavigationBar and change the title?
When I try to set the customView property, I get an image right next to the default button.
I use this code
self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithImage:backButtonImage landscapeImagePhone:nil style:UIBarButtonItemStylePlain target:nil action:nil];
I want the title to be "Back" which is easy enough to do in Storyboard. But the problem is that no matter if I use code above or use customView property, the default back button remains.
You can add a UIImage to the UIButton. And, then use it as a custom back button. Here's a quick example:
// Custom image
UIImage *backButtonImage = [UIImage imageNamed:#"button-background-image.png"];
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
[backButton setFrame:CGRectMake(0, 0, 100, 30)];
[backButton setBackgroundImage:backButtonImage forState:UIControlStateNormal];
// Custom title
[backButton setTitle:#"Back" forState:UIControlStateNormal];
[backButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
[backButton addTarget:self action:#selector(barPayButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
[backButton setShowsTouchWhenHighlighted:NO];
UIBarButtonItem *buttonOnBar =[[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = buttonOnBar;
Note: You will loose the chevron (system-provided back arrow) which was introduced in iOS7. It goes as a title and chevron together presenting your previous view controller.
Update:
You can also use UIEdgeInsets to resize your image intelligently.
UIEdgeInsets edgeInsets = UIEdgeInsetsMake(0, 0, 15, 10);
UIImage *backButtonImage = [[UIImage imageNamed:#"button-background-image.png"] resizableImageWithCapInsets:edgeInsets];
You can achieve what you want by setting the navigationItem.leftBarButtonItem of the view controller that's being pushed to the custom bar button item with the look you want. Good Luck!
I cannot figure out how to disable the back-button animation that occurs in the navigation bar when switching from a tableview to a standard view (when a cell is selected). There is no obvious line of code that enabled animation to begin with. Here it is in gif-form:
The navigation buttons in the Facebook app do not animate, so it is possible.
It may be relevant to mention that I am using the ViewDeck library to create the Facebook-like tableView menu, i.e. swipe to the right to expose a table.
EDIT: solution is based on Hesham Abd-Elmegid's answer but modified to use a custom image...
UIImage *settingsImage = [UIImage imageNamed:#"back_button#2x.png"];
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
backButton.frame = CGRectMake(280.0, 10.0, 29.0, 29.0);
[backButton setBackgroundImage:settingsImage forState:UIControlStateNormal];
backButton.frame = CGRectMake(0, 0, 50, 30);
[backButton addTarget:self action:#selector(goBack) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = customBarItem;
If you set a custom UIBarButtonItem as a left navigation item (instead of standard back button item), it will fade instead of slide in, just like in Facebook's app. Just create a simple method that will replace back button functionality by calling popViewControllerAnimated: on the navigation controller in which your detail view controller is contained.
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.leftBarButtonItem = [[[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStyleBordered target:self action:#selector(goBack)] autorelease];
}
- (void)goBack
{
[self.navigationController popViewControllerAnimated:YES];
}
Note: UIBarButtonItem can also be set up with an image using initWithImage:style:target:action: method.
You could replace the back button with a custom UIButton. That way it won't animate on transition.
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
[button setTitle:#"Back" forState:UIControlStateNormal];
backButton.frame = CGRectMake(0, 0, 50, 30);
[backButton addTarget:self action:#selector(onBack) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];
self.navigationItem.leftBarButtonItem = customBarItem;
[customBarItem release];
You will have to find a PNG for the arrow shape of the back button though.
I would like to create a UIBarButtonItem with an icon and text. I've seen this solution and this one but when you set the background image it doesn't draw a border.
I don't really want to draw a border (that looks like the "Plain" style one) with my icon on it. Is there another way around this?
If you look at the first solution you linked to you will notice the following line
UIBarButtonItem *barButton= [[[UIBarButtonItem alloc] initWithCustomView:chatButton] autorelease];
You can initialize a button with whatever view you would like. You can make a button with any (acceptable) view inside it.
eg.
// GRAPHICAL BUTTON FRAMEWORK
UIButton* btton = [UIButton buttonWithType:UIButtonTypeCustom];
[btton setFrame:CGRectMake(0, 0, 30, 30)];
[btton addTarget:self action:#selector(SOMEROUTINE) forControlEvents:UIControlEventTouchUpInside];
[btton setImage:[UIImage imageNamed:#"SOME IMAGE"] forState:UIControlStateNormal];
UIBarButtonItem* remix = [[[UIBarButtonItem alloc] initWithCustomView:btton] autorelease];
Hope that helps!
Following is a code to display a button to the toolbar.
UIButton myButton = [UIButton buttonWithType:UIButtonTypeCustom];
UIImage *myImage = [UIImage imageNamed:#"img1.png"];
[myButton setBackgroundImage:myImage forState:UIControlStateNormal];
UIBarButtonItem *myToolbarButton = [[UIBarButtonItem alloc] initWithCustomView:myButton];
Nothing gets displayed on the toolbar. Please tell me what is wrong.
[myToolbar setItems:[NSArray arrayWithObject:myToolbarButton]]; // might help
OR if it's a navigation bar
self.navigationItem.rightBarButtonItem = myToolbarButton;
Also you should set the frame for the custom button, something like this:
UIButton *mybutton = [[UIButton alloc] initWithFrame:CGRectMake:0,0,200,50];
Then if you want to add a selector/callback:
[myButton addTarget:self action:#selector(someMethod) forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = myButtonItem; // and change for the right button.
Where self is a UIViewController.
You forgot to add this button to the toolbar!
NSArray *toolbarItems = [[NSArray alloc] initWithObjects:myToolbarButton,nil]; // you can more buttons here
[aToolbar setItems:toolbarItems animated:NO]; // change to YES if you want to have nice animation
[toolbarItems release];
If you want to add a button to navigation bar, use this:
[self.navigationItem setRightBarButtonItem:myToolbarButton]; // or setLeft...
Also, you should remember to set the frame of myButton:
[myButton setFrame:CGRectMake(0, 0, 30, 32)];