I've created custom back bar button. And I added an UIview because I have to change position of it within bar.
UIImage *backButtonImage = [UIImage imageNamed:#"backBtnWhite"];
_backButton = [UIButton buttonWithType:UIButtonTypeCustom];
_backButton.exclusiveTouch = YES;
[_backButton setImage:backButtonImage forState:UIControlStateNormal];
[_backButton setImage:backButtonImage forState:UIControlStateHighlighted];
[_backButton addTarget:self action:#selector(back) forControlEvents:UIControlEventTouchUpInside];
_backButton.frame = CGRectMake(-4.0, 7.0, 40, 40);
UIView * view = [[UIView alloc] initWithFrame:CGRectMake(-4.0, 7.0, backButtonImage.size.width, backButtonImage.size.height)];
[view addSubview:_backButton];
UIBarButtonItem* barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:view];
self.navigationItem.rightBarButtonItem = barButtonItem;
But after that I've added UIView it became difficult to click on it.
I've tried to change button area, but it didn't give results.
It seems like you specify incorrect frame for _button or/and view and this changes the tap region. Try to set different background color for _backButton and view. This will show you if frames are in positions that you expect.
If you try to adjust image position by specifying these frames - its more correct to use properties of UIButton like imageEdgeInsets and titleEdgeInsets.
Related
I'm using Xcode 8.0.
I add a custom left barbutton to my NavBar:
UIImage * imageNormal = [UIImage imageNamed:#"InfoIcon"];
UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
[button addTarget:self action:#selector(testPressed ) forControlEvents:UIControlEventTouchUpInside];
[button setBackgroundImage:imageNormal forState:UIControlStateNormal];
// set the frame of the button
button.frame = CGRectMake(0, 0, imageNormal.size.width, imageNormal.size.height);
UIView * view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, imageNormal.size.width, imageNormal.size.height)];
[view addSubview:button];
// set the barbuttonitem to be the view
UIBarButtonItem * barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:view];
self.navigationItem.leftBarButtonItem = barButtonItem;
Here what I got:
unfortunately my button is not centered because the Nav bar has a custom image higher than the standard. But if I press the info Icon it works.
If I change the icon position with this line of code:
button.frame = CGRectMake(0, -30, imageNormal.size.width, imageNormal.size.height);
I got the right positioning:
But in this case the bar button is not anymore clickable, and I don't get why this is happening.
As workaround I attach a gesture to the view:
UITapGestureRecognizer *_tapOnVideoRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self.revealViewController action:#selector(revealToggle:)];
[view addGestureRecognizer:_tapOnVideoRecognizer];
it works, but the tap is on the view and not on the button so that the changing status of the button when pressed is not working.
#JakubKnejzlik from https://stackoverflow.com/a/12554715/1320479
suggests:
This can be fixed by subclassing the wrapper view (superview of button, custom view of uibarbuttonitem) and overriding the hittest method to return button accordingly.
But I have no idea how to do it
Actually i want to place image and label on the toolbar as a UIBarButtonItem and provide a clickable effect to that Button.
So what i have done here is I have created one custom view and placed Image and Label on the same custom view and finally placed this custom view as UIBarButtonItem CustomView.
But when i set target and action for the same UIBarButtonItem, it is not calling the selector method.
The entire code is below.
Can anybody suggest me what's the mistake in my code ? and is there any other approach to achieve the same ????
Early suggestions would be much appreciated.
- (void)viewDidLoad
{
[super viewDidLoad];
[self.navigationController setToolbarHidden:NO];
UIView *customView = [[UIView alloc]
initWithFrame:CGRectMake(0,0,self.navigationController.toolbar.frame.size.width,self.navigationController.toolbar.frame.size.height)];
customView.backgroundColor = [UIColor colorWithRed:62.0/255.0 green:187.0/255.0 blue:150.0/255.0 alpha:1.0];
[self.navigationController.toolbar addSubview:customView];
UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(60,0,44,44)];
imgView.image = [UIImage imageNamed:#"documentImage.png"];
[customView addSubview:imgView];
UILabel *lbl = [[UILabel alloc]initWithFrame:CGRectMake(104,0,145,44)];
lbl.text = #"Scan Document";
lbl.textAlignment = NSTextAlignmentLeft;
[customView addSubview:lbl];
UIBarButtonItem *bar = [[UIBarButtonItem alloc]initWithCustomView:customView];
bar.target = self;
bar.action = #selector(scanDocument);
self.toolbarItems = [NSArray arrayWithObjects:bar, nil];
}
If you want to create button right hand side here is the code. i have already implemented it and working fine.
//Button Right side
UIImage *imgFavRest = [UIImage imageNamed:#"documentImage.png"];
UIButton *cart = [UIButton buttonWithType:UIButtonTypeCustom];
[cart setImage:imgFavRest forState:UIControlStateNormal];
cart.frame = CGRectMake(0, 0, imgFavRest.size.width, imgFavRest.size.height);
[cart addTarget:self action:#selector(showCart) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *rightBtn = [[UIBarButtonItem alloc] initWithCustomView:cart];
self.navigationItem.rightBarButtonItem = rightBtn;
Then use method like this . that's all
-(void)cartItemCount{
// Method
}
float textwidth = 50; // according to your text
UIImage *image = [UIImage imageNamed:#"logout"];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.bounds = CGRectMake( 10, 0, image.size.width+textwidth, image.size.height );
[btn addTarget:self action:#selector(scanDocument) forControlEvents:UIControlEventTouchUpInside];
[btn setImage:image forState:UIControlStateNormal];
[btn setTitle:#"test" forState:UIControlStateNormal];
[btn setTitleEdgeInsets:UIEdgeInsetsMake(0.0, 5.0, 0.0, 0.0)];
//Adjust the coordinates and size of your button as your requirement.This is a sample code to guide you.
//PS:Take a UIButton in the nib file>Make it a custom button>Connect the IBOutlet to your custom button in the nib file.Thats it.
UIBarButtonItem *rightButton = [[UIBarButtonItem alloc] initWithCustomView:btn];
self.navigationItem.rightBarButtonItem = rightButton;
I see very complicated answers, all of them using code. However, if you are using Interface Builder, there is a very easy way to do this:
Select the button and set a title and an image. Note that if you set
the background instead of the image then the image will be resized if
it is smaller than the button.IB basic image and title
Set the position of both items by changing the edge and insets. You
could even control the alignment of both in the Control section.
IB position set IB Control set
You could even use the same approach by code, without creating UILabels and UIImages inside as other solutions proposed. Always Keep It Simple!
EDIT: Attached a small example having the 3 things set (title, image and background) with correct insets Button preview
Note:: UIBarButtonItem inherits from UIBarItem and NSObject so it doesn't know anything about touches. It would be nice if the docs mentioned that the action and target properties only apply if the custom view is a UIButton.
In my navigation bar I have two right button bar items. One is a custom button and the other uses the info light button type. Both work great but I would like to make the custom button have the default glow the same way the info button does when you touch it. Is this possible?
// Default info light btn
UIButton *infoBtn = [UIButton buttonWithType:UIButtonTypeInfoLight];
UIBarButtonItem *infoBtnItem = [[UIBarButtonItem alloc]initWithCustomView:infoBtn];
// Custom Btn
UIButton *customButton = [UIButton buttonWithType:UIButtonTypeCustom];
[customButton setFrame:CGRectMake(0, 0, btnImage.size.width, btnImage.size.height)];
[customButton setBackgroundImage:btnImage forState:UIControlStateNormal];
[customButton addTarget:self action:#selector(rightDrawerButtonPress:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *customButtonItem = [[UIBarButtonItem alloc] initWithCustomView:wlButton];
NSArray *rightBtns = #[customButtonItem, infoBtnItem];
[navItem setRightBarButtonItems:rightBtns animated:YES];
you just need to put one more line of code like:-
customButton.showsTouchWhenHighlighted = TRUE;
After this your code Output something like this:-
I want to show custom navigation bar back button. I want to show only image on it. I want to use this button in whole app also dont want to create this button in each file. How can i??
Here is my code:
// Set the custom back button
UIImage *buttonImage = [UIImage imageNamed:#"back_arrow.png"];
//create the button and assign the image
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:buttonImage forState:UIControlStateNormal];
//set the frame of the button to the size of the image (see note below)
button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);
[button addTarget:self action:#selector(popViewControllerAnimated:) forControlEvents:UIControlEventTouchUpInside];
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
self.navigationItem.leftBarButtonItem = customBarItem;
but this is showing on current page only.
Another code:
[[UIBarButtonItem appearance] setBackButtonBackgroundImage:[UIImage imageNamed:#"back_arrow.png"] forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
Using this code back button image is showing in whole app. But the text "Back" is also showing. How can i solve this problem.
Thanks in advance.
I've used a category in the past to do this.
Create a category on UIBarButtonItem called +projectButtons (or something).
Then you can have a function like...
+ (UIBarButtonItem)backArrowButtonWithTarget:(id)target action:(SEL)action
{
UIImage *buttonImage = [UIImage imageNamed:#"back_arrow.png"];
//create the button and assign the image
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setImage:buttonImage forState:UIControlStateNormal];
//set the frame of the button to the size of the image (see note below)
button.frame = CGRectMake(0, 0, buttonImage.size.width, buttonImage.size.height);
[button addTarget:target action:action forControlEvents:UIControlEventTouchUpInside];
//create a UIBarButtonItem with the button as a custom view
UIBarButtonItem *customBarItem = [[UIBarButtonItem alloc] initWithCustomView:button];
return customBarItem;
}
Then add it to you navigation bar like so...
self.navigationItem.leftBarButtonItem = [UIBarButtonItem backArrowButtonWithTarget:self action:#selector(popViewControllerAnimated:)];
This means you only need one line of code to create it but you still get the customisation of the target and action in each VC that you use it in. If you decide to change the look of the button then it's all done in one place.
In my RootViewController, I set an image as a rightBarButtonItem exactly like this, but in this second ViewController I created, this "back" button won't display. I run it on the simulator and on my iPhone and I can tap the area where the button should be showing up and the goBack{} method is being called. Just the image(s) aren't showing. Any thoughts?
Also, as far as the images go, I'm exporting them the exact same way I've been exporting all my other images. All the others have been working fine. It doesn't seem like a problem with the images, as I've substituted the back button images for several others and none of them are displaying. I'm pretty sure I'm creating these images in the right order. Anyway, any help would be much appreciated.
From my NewGameViewController.m file:
- (void)viewDidLoad {
[super viewDidLoad];
CGFloat startingPoint = 0.0;
CGRect bounds = self.view.bounds;
bounds.origin.y = startingPoint;
bounds.size.height -= startingPoint;
self.ivarNewGameTableView = [[UITableView alloc] initWithFrame:bounds style:UITableViewStyleGrouped];
self.ivarNewGameTableView.separatorStyle = UITableViewCellSeparatorStyleSingleLine;
self.ivarNewGameTableView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
[self.view addSubview:self.ivarNewGameTableView];
UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"background.png"]];
self.ivarNewGameTableView.backgroundView = backgroundImageView;
UIImage *mainNavBar = [UIImage imageNamed:#"startNewGameNavBar.png"];
UIImageView *navBarView = [[UIImageView alloc] initWithImage:mainNavBar];
[navBarView setFrame:CGRectMake(0.0, 0.0, 320.0, 44.0)];
[self.navigationController.navigationBar addSubview:navBarView];
UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom];
// neither one of the following lines work. I know they're supposed to be identical, but
// seen Xcode be picky.
back.frame = CGRectMake(0.0, 0.0, 54.0, 36.0);
// [back setFrame:CGRectMake(0.0, 0.0, 54.0, 36.0)];
[back addTarget:self action:#selector(goBack) forControlEvents:UIControlEventTouchUpInside];
[back setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[back setImage:[UIImage imageNamed:#"backTouched.png"] forState:UIControlStateHighlighted];
UIBarButtonItem *backButton = [[UIBarButtonItem alloc] initWithCustomView:back];
self.navigationItem.leftBarButtonItem = backButton;
}
-(void)goBack {
NSLog(#"goBack called.");
// [self.ivarNewGameTableView pushViewController:];
}
If you're in a navigation stack the back button item is set for you. Use backBarButtonItem correctly do get the behaviour you like.
On your main view controller that you want to come back to you need to overload the backBarButton item.
UIBarButtonItem *newBackButton = [[UIBarButtonItem alloc] initWithTitle: #"Back" style: UIBarButtonItemStyleBordered target: nil action: nil];
self.navigationItem.backBarButtonItem = newBackButton;
Some code samples on github
Ok. Finally figured this out. The problem was with this line in the creation of my New Game View Navigation Bar:
[self.navigationController.navigationBar addSubview:navBarView];
I did this in my Root View's Navigation Bar too. It now looks like this, in both files:
UIImage *startNewGameNavBar = [UIImage imageNamed:#"startNewGameNavBar.png"];
// with the key line being this one
[self.navigationController.navigationBar setBackgroundImage:startNewGameNavBar forBarMetrics:UIBarMetricsDefault];
In noob-speak, as I wish more programmers would use for noobs like me, if you're having problems with buttons disappearing behind the your custom navigation bar, and you're using code that looks like my example, it's because you're not supposed to be adding it as a subview. This puts it on top of everything else. Instead, change the navigation bar's background image and, of course, the image winds up in the...(drumroll, please)...background. (end drumroll)
As for the adding of the button images, I just created a UIButton with custom type, set the images for the normal and highlighted states, set the button to call my goBack method, set its frame size, and assigned it to the navigationItem's leftBarButtonItem property:
UIButton *backButton = [UIButton buttonWithType:UIButtonTypeCustom];
[backButton setImage:[UIImage imageNamed:#"back.png"] forState:UIControlStateNormal];
[backButton setImage:[UIImage imageNamed:#"backTouched.png"] forState:UIControlStateHighlighted];
[backButton addTarget:self action:#selector(goBack) forControlEvents:UIControlEventTouchUpInside];
[backButton setFrame:CGRectMake(0.0, 0.0, 54.0, 36.0)];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:backButton];