I'm making a custom view to display a simple star rating system in my app. Each star is a UIButton that has a specific star image-file set as its image. Everything works fine in storyboard but when I run the app on a device each star image is slightly transparent.
When I set the background color of the buttons themselves, they are 100% opaque yet the images are still slightly transparent. Any reason why that same button's image wouldn't be opaque? I just want the stars to always be opaque and not dependent on background.
I just joined SO so I don't have enough reputation to post images yet but here's a link to an image that might explain the issue a bit better: photo
Basic code for the custom UIView:
- (void)layoutSubviews
{
[super layoutSubviews];
self.opaque = YES;
[self drawStars];
}
- (void)drawStars {
float imagePadding = self.padding;
CGFloat starWidth = self.selectedStarImage.size.width;
for (NSInteger counter = 0; counter < self.totalStars; counter++)
{
UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(counter * (imagePadding + starWidth), 0, starWidth, starWidth)];
button.opaque = YES;
if (counter >= self.rating) {
[button setImage:self.starImage forState:UIControlStateNormal];
}
else {
[button setImage:self.selectedStarImage forState:UIControlStateNormal];
}
[self addSubview:button];
[button addTarget:self action:#selector(buttonPressed:) forControlEvents:UIControlEventTouchUpInside];
button.tag=counter;
}
}
- (void)updateStars
{
for (UIView *subview in self.subviews) {
[subview removeFromSuperview];
}
[self drawStars];
}
Any help would be much appreciated.
It could happen that the alpha of view on which you are adding the buttons as subviews could be lesser than one.
i think you have to first change the image of star because its background it transparent that is the problem and check the background color of button.
Or
you can create whole transparent image and set proper background color which you want.
These images are not proper. or check it by using another images.
I am looking to recreate the raised tab bar as seen in many apps but am looking to do this in a universal app where the raised position would need to change.
At the moment I am not having much luck creating this so have come here for enlightenment, failing this I may just create a custom tab bar background.
If this is the case, would this work in the app delegate to differentiate the two devices?
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {
UITarBar *tabBar = [UITabBar appearance];
[tabBar setBackgroundImage: [UIImage imageNamed:#"iPadtabBar.png"]];
}
else {
UITarBar *tabBar = [UITabBar appearance];
[tabBar setBackgroundImage: [UIImage imageNamed:#"iPhonetabBar.png"]];
}
You may be thinking, why doesn't he just test it.. well that would be easier and if I could I would rather than ask first but I don't get my Mac back until the start of next week!
You will have to subclass UITabBarController and customize that center tab button. There is a nicely done example here: https://github.com/boctor/idev-recipes/tree/master/RaisedCenterTabBar/Classes
Header file:
#interface CustomTabBarViewController : UITabBarController{
}
// Create a view controller and setup it's tab bar item with a title and image
-(UIViewController*) viewControllerWithTabTitle:(NSString*)title image:(UIImage*)image;
// Create a custom UIButton and add it to the center of our tab bar
-(void) addCenterButtonWithImage:(UIImage*)buttonImage highlightImage:(UIImage*)highlightImage;
#end
Implementation file:
#implementation CustomTabBarViewController
// Create a view controller and setup it's tab bar item with a title and image
-(UIViewController*) viewControllerWithTabTitle:(NSString*) title image:(UIImage*)image
{
UIViewController* viewController = [[UIViewController alloc] init];
viewController.tabBarItem = [[UITabBarItem alloc] initWithTitle:title image:image tag:0];
return viewController;
}
// Create a custom UIButton and add it to the center of our tab bar
-(void) addCenterButtonWithImage:(UIImage*)buttonImage highlightImage:(UIImage*)highlightImage
{
UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
button.autoresizingMask = UIViewAutoresizingFlexibleRightMargin | UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleTopMargin;
button.frame = CGRectMake(0.0, 0.0, buttonImage.size.width, buttonImage.size.height);
[button setBackgroundImage:buttonImage forState:UIControlStateNormal];
[button setBackgroundImage:highlightImage forState:UIControlStateHighlighted];
CGFloat heightDifference = buttonImage.size.height - self.tabBar.frame.size.height;
if (heightDifference < 0)
button.center = self.tabBar.center;
else
{
CGPoint center = self.tabBar.center;
center.y = center.y - heightDifference/2.0;
button.center = center;
}
[self.view addSubview:button];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return YES;
}
#end
So I'm having issues with the buttons for the filters in my photo app. I'm not exactly sure why, but they've suddenly stopped working. The selector is not being called when they're tapped, but I have no idea why. They were working just fine a few days ago, but for some reason they're not now. I've checked the UIView subviews array, verified that it's right on top. I need a way to see if, for some reason, the touches are not making it to the button. I'm not sure how to do this.
I wish I had more information to give, but this is all I've got. I hope someone has some suggestions because I'm at wit's end with it.
Thanks in advance!
Button Creation Method:
-(void)createFilterButtonsForThumbnail:(UIImage *)thumbnail
{
UIView *filtersContainer = self.filterContainer;
CGRect buttonFrame = CGRectMake(kFilterFrameThickness, kFilterFrameThickness,
thumbnail.size.width, thumbnail.size.height);
CGFloat frameWidth = thumbnail.size.width+(2*kFilterFrameThickness);
CGFloat frameHeight = kFilterPickerHeight;
UIEdgeInsets backgroundInsets = UIEdgeInsetsMake(0, kFilterFrameThickness, 0, kFilterFrameThickness);
UIImage *buttonBackgroundImage = [[UIImage imageNamed:#"FilmReel"] resizableImageWithCapInsets:backgroundInsets];
for (int i = 0;i<(self.filterPaths.count+kFilterNonLookups+1);i++){
UIImageView *buttonBackground = [[UIImageView alloc] initWithFrame:CGRectMake(kFilterSidePadding+(i*(frameWidth+kFilterSidePadding)),
0,
frameWidth,
frameHeight)];
[buttonBackground setImage:buttonBackgroundImage];
UIButton *thumbnailButton = [[UIButton alloc] initWithFrame:buttonFrame];
UIImage *filteredThumbnail = [self applyFilterAtIndex:i ToImage:thumbnail];
[thumbnailButton setImage:filteredThumbnail forState:UIControlStateNormal];
[thumbnailButton addTarget:self action:#selector(filterSelected:) forControlEvents:UIControlEventTouchUpInside];
[thumbnailButton setTag:i];
[buttonBackground addSubview:thumbnailButton];
[filtersContainer addSubview:buttonBackground];
if ((i > (kFilterProMinimumIndex)) && ([self isProVersion]) == NO){
UIImageView *proTag = [[UIImageView alloc] initWithImage:nil];
CGRect proFrame = CGRectMake(buttonFrame.origin.x,
buttonFrame.origin.y + buttonFrame.size.height - kFilterProIconHeight-kFilterFrameThickness,
kFilterProIconWidth,
kFilterProIconHeight);
[proTag setBackgroundColor:[UIColor orangeColor]];
[proTag setFrame:proFrame];
[thumbnailButton addSubview:proTag];
[self.filterProTags addObject:proTag];
}
}
}
Selector Method:
-(void)filterSelected:(UIButton *)button
{
NSLog(#"Pressed button for index %i",button.tag);
int buttonTag = button.tag;
if ((buttonTag < kFilterProMinimumIndex+1) || ([self isProVersion] == YES)){
[self.imageView setImage:[self applyFilterAtIndex:buttonTag ToImage:self.workingImage]];
}
else {
[self processProPurchaseAfterAlert];
}
}
I see a couple issues in this, but I'm not sure which ones are causing it to break. First, you should instantiate your button using buttonWithType: on UIButton:
UIButton *thumbnailButton = [UIButton buttonWithType:UIButtonTypeCustom];
[thumbnailButton setFrame:buttonFrame]
The reason for this is UIButton is a class cluster, and you should let the OS give you the correct button.
Secondly, you're adding the Button as a Subview of an UIImageView, which by default, has userInteractionEnabled set to NO.
This property is inherited from the UIView parent class. This class
changes the default value of this property to NO.
You should have the button be one large button, with the background of the button be the image you want it to be.
I'm working on an iOS app that requires the user to enter numbers into a UITextField using the keyboard type UIKeyboardTypeDecimalPad. However I just realized that there is no support for entering negative numbers, which is a requirement of the application.
Any ideas or thoughts on how I can accomplish this?
You can use a UIToolbar as an input accessory view for your UITextField and put a button with a "+/-" (plus/minus sign in it).
UIToolbar *toolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, 44)];
UIBarButtonItem *plusMinusBbi = [[UIBarButtonItem alloc]initWithTitle:#"+/-" style:UIBarButtonItemStylePlain target:self action:#selector(togglePositiveNegative:)];
toolbar.items = #[plusMinusBbi];
self.textField.inputAccessoryView = toolbar;
I don't believe that something like that is possible right now (since Apple hasn't implemented it yet). The only option would be to design your own keyboard or use a complete ASCII one.
func addToolbar() {
let toolbar = UIToolbar()
toolbar.sizeToFit()
let plusMinusButton = UIBarButtonItem(title: "+/-", style: .done, target: self, action: #selector(plusMinusAction))
plusMinusButton.tintColor = .black
plusMinusButton.width = UIScreen.main.bounds.width / 3
toolbar.items = [plusMinusButton]
toolbar.barTintColor = #colorLiteral(red: 0.7812563181, green: 0.8036255836, blue: 0.8297665119, alpha: 1)
toolbar.isTranslucent = false
myField.inputAccessoryView = toolbar
}
#objc func plusMinusAction() {
let text = myField.text ?? ""
if text.hasPrefix("-") {
myField.text = String(text.suffix(text.count - 1))
} else {
myField.text = "-\(text)"
}
}
From what I've found apple has yet to implement such a standard keyboard. However it is possible to add UIButtons to any keyboard window. this link should help, or similar tutorial this link should also help
Basically you register a NSNotificationListener to listen for the keyboard coming up. Grab the keyboards frame and add a UIButton to its view. The above link isn't quite what we want but its the right idea.
In appDelegate,
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];
- (void)keyboardDidShow:(NSNotification *)note
{
// Get the Very Top Window on the Display. That's where the Keyboard is.
NSInteger topWindow = [[[UIApplication sharedApplication] windows] count] - 1;
UIWindow *keyboard = [[[UIApplication sharedApplication] windows] objectAtIndex:topWindow];
// If the dot has not been created (first time the keyboard has been displayed) create it.
if (self.dot == nil)
{
self.dot = [UIButton buttonWithType:UIButtonTypeCustom];
// Make the dot a subview of the view containing the keyboard.
[keyboard addSubview:self.dot];
// Place the dot in the correct location on the keyboard.
[self.dot setFrame:CGRectMake(0, 427, 106, 53)];
// Set the overlay graphics. (Use TransDecimalDown.png and TransDecimalUp.png for the Alert Style Keyboard.
[self.dot setImage:[UIImage imageNamed:#"DecimalUp.png"] forState:UIControlStateNormal];
[self.dot setImage:[UIImage imageNamed:#"DecimalDown.png"] forState:UIControlStateHighlighted];
// Give the dot something to do when pressed.
[self.dot addTarget:self action:#selector(sendDecimal:) forControlEvents:UIControlEventTouchUpInside];
}
// Bring the dot to the front of the keyboard.
[keyboard bringSubviewToFront:self.dot];
}
- (void)sendDecimal:(id)sender {
// Post a notification that the dot has been pressed. Observing view controllers are then responsible for adding the actual decimal.
[[NSNotificationCenter defaultCenter] postNotificationName:#"DecimalPressed" object:nil];
// Play the Keyboard Click. If the user has these sound effects turned off, the decimal will still click. Sorry. :( (Also, doesn't seem to work on the simulator, no keyboard clicks seem to.)
AudioServicesPlaySystemSound(0x450);
}
sorry for the horrible code format but you get the idea :)
This clearly isn't my best answer.. but i'm unable to delete it since it is accepted.
may this code will help you:
if you want a negative number just use "-"
NSString *fieldString = [NSString stringWithFormat:#"%#",Textfield.text];
NSLog(#"%#",fString);
int fieldValue;
value = [fString intValue];
NSLog(#"%d",fieldValue);
this will work for decimal numbers
double fieldValue;
value = [fString doubleValue];
NSLog(#"%f",fieldValue);
To accomplish the task I came using '.inputAccessoryView' with the textfield
On viewDidLoad
self.textField.inputAccessoryView = [self accessoryViewForTextField:self.textField];
then
- (UIView *)accessoryViewForTextField:(UITextField *)textField{
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
view.backgroundColor = [UIColor lightGrayColor];
UIButton *minusButton = [UIButton buttonWithType:UIButtonTypeCustom];
UIButton *doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
[minusButton setTitle:#"-" forState:UIControlStateNormal];
[doneButton setTitle:NSLocalizedString(#"Done", #"Done") forState:UIControlStateNormal];
minusButton.backgroundColor = [UIColor magentaColor];
doneButton.backgroundColor = [UIColor blueColor];
CGFloat buttonWidth = view.frame.size.width/3;
minusButton.frame = CGRectMake(0, 0, buttonWidth, 44);
doneButton.frame = CGRectMake(view.frame.size.width - buttonWidth, 0, buttonWidth, 44);
[minusButton addTarget:self action:#selector(minusTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
[doneButton addTarget:self action:#selector(doneTouchUpInside:) forControlEvents:UIControlEventTouchUpInside];
[view addSubview:minusButton];
[view addSubview:doneButton];
return view;
}
this will add a custom view just above the keyboard as a part of it
finally to get the 'minus'
#pragma mark - IBActions
- (IBAction)minusTouchUpInside:(id)sender
{
NSString *value = self.textField.text;
if (value.length > 0) {
NSString *firstCharacter = [value substringToIndex:1];
if ([firstCharacter isEqualToString:#"-"]){
self.textField.text = [value substringFromIndex:1];
}else{
self.textField.text = [NSString stringWithFormat:#"-%#", value];
}
}
}
- (IBAction)doneTouchUpInside:(id)sender
{
[self.textField resignFirstResponder];
}
I have a UISearchBar that has a cancel button (it's displayed using -(void)setShowsCancelButton:animated). I've changed the tintColor of the search bar like this in an attempt to get a grayish searchbar:
UISearchBar *searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];
searchBar.tintColor = [UIColor colorWithWhite:0.8 alpha:1.0];
This is what it looks like now - notice how the cancel button is also gray: http://twitpic.com/c0hte
Is there a way to set the color of the cancel button separately so it looks more like this: http://twitpic.com/c0i6q
You can use UIAppearance to style the cancel button without iterating subviews of the UISearchBar, but the UIButton header does not currently have any methods annotated with UI_APPEARANCE_SELECTOR.
EDIT: Drill down the subviews till you get that cancel button
But this usually returns nil until
searchBar.setShowsCancelButton(true, animated: true) is called.
extension UISearchBar {
var cancelButton : UIButton? {
if let view = self.subviews.first {
for subView in view.subviews {
if let cancelButton = subView as? UIButton {
return cancelButton
}
}
}
return nil
}
}
In iOS 5.0+, you can use the appearnce proxy.
Before the search bar is showed.:
UIBarButtonItem *searchBarButton = [UIBarButtonItem appearanceWhenContainedIn:[UISearchBar class], nil];
[searchBarButton setBackgroundImage:myCancelButtonImageNormal forState:UIControlStateNormal barMetrics:UIBarMetricsDefault];
[searchBarButton setBackgroundImage:myCancelButtonImageHighlighted forState:UIControlStateHighlighted barMetrics:UIBarMetricsDefault];
[searchBarButton setTitleTextAttributes:barButtonTitleTextAttributesNormal forState:UIControlStateNormal];
[searchBarButton setTitleTextAttributes:barButtonTitleTextAttributesHighlighted forState:UIControlStateHighlighted];
If you use [UIButton appearanceWhenContainedIn:[UISearchBar class], nil], it will affect other buttons (e.g. clear button). So, you'd better not use UIButton's appearnce. Try UIBarButtonItem.
Change the title of 'Cancel' button:
[[UIButton appearanceWhenContainedIn:[UISearchBar class], nil] setTitle:#"newTitle" forState:UIControlStateNormal];
Swift equivalent:
let cancelButton = UIButton.appearance(whenContainedInInstancesOf: [UISearchBar.self])
cancelButton?.setTitle("cancel".localized, for: .normal)
Though this might not be exactly relevant to the original question, the solution is still applicable in the larger sense of trying to customize the Cancel button in the UISearchBar. Thought this will help others who are stuck in such a scenario.
My situation was to change the cancel button's title, but with a twist, wherein I did not want to show the cancel button by default but only wanted it to show up, when the user enters the search mode (by clicking inside the search text field). At this instant, I wanted the cancel button to carry the caption "Done" ("Cancel" was giving a different meaning to my screen, hence the customization).
Nevertheless, here's what I did (a combination of caelavel's and Arenim's solutions):
Subclassed UISearchBar as MyUISearchBar with these two methods:
-(void) setCloseButtonTitle: (NSString *) title forState: (UIControlState)state
{
[self setTitle: title forState: state forView:self];
}
-(void) setTitle: (NSString *) title forState: (UIControlState)state forView: (UIView *)view
{
UIButton *cancelButton = nil;
for(UIView *subView in view.subviews){
if([subView isKindOfClass:UIButton.class])
{
cancelButton = (UIButton*)subView;
}
else
{
[self setTitle:title forState:state forView:subView];
}
}
if (cancelButton)
[cancelButton setTitle:title forState:state];
}
And in the viewcontroller which uses this Searchbar, the following piece of code takes care of showing the cancel button and customizing its title:
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
MyUISearchBar *sBar = (MyUISearchBar *)searchBar;
[sBar setShowsCancelButton:YES];
[sBar setCloseButtonTitle:#"Done" forState:UIControlStateNormal];
}
Strangely enough, I did not have to do anything to hide the cancel button, as it is hidden by default, when the search mode is exited.
What you want to do is pretty tough. There is no built-in hook to get at the cancel button.
However, there are a couple of options if you are willing to jimmy open the hood.
First off, UISearchBar is a UIView, and the Cancel button is also a view, which is added into the search bar as a subview, just as you would expect.
I have experimented a little, and can tell you that when the button is onscreen it has a size of 48,30.
So in viewWillAppear, you can do something like this:
Find the cancel button view in [searchBar subviews] by looking for one with size 48,30. (There only seems to be one -- this could change...) You could be doubly careful and look for one that is in approximately the correct position (differs in landscape and portrait).
Add a subview to the cancel button.
The subview should be a UIControl (so that you can set enabled = NO, in order to make sure touch events get to the actual cancel button)
It needs to have the right color and rounded corners; you will need to fudge the size for reasons I don't yet understand (55,30 seems to work)
This will work if searchBar.showsCancelButton is always YES; if you want it to disappear when not editing the search string, you will need to find a hook to add the overlay each time the cancel button appears.
As you can see, this is some ugly tinkering. Do it with eyes wide open.
You can find the cancel button by looping through the subviews of the search bar and checking for the class type (instead of the size):
UIButton *cancelButton = nil;
for(UIView *subView in yourSearchBar.subviews){
if([subView isKindOfClass:UIButton.class]){
cancelButton = (UIButton*)subView;
}
}
And then change the tint color:
[cancelButton setTintColor:[UIColor colorWithRed:145.0/255.0 green:159.0/255.0 blue:179.0/255.0 alpha:1.0]];
If you want to configure your cancel button on UISearchBar you should get the UIButton object from your UISearchBar object. Example below
UISearchBar *s_bar = [[UISearchBar alloc] initWithFrame:CGRectMake(50,20,300,30)];
s_bar.delegate = self;
s_bar.barStyle = UIBarStyleDefault;
s_bar.showsCancelButton = YES;
UIButton *cancelButton;
for (id button in s_bar.subviews)
{
if ([button isKindOfClass:[UIButton class]])
{
cancelButton=(UIButton*)button;
break;
}
}
Custom UISearchBar and override method -addSubview:
- (void) addSubview:(UIView *)view {
[super addSubview:view];
if ([view isKindOfClass:UIButton.class]) {
UIButton *cancelButton = (UIButton *)view;
[cancelButton setBackgroundImage:[UIImage imageNamed:#"xxxx.png"] forState:UIControlStateNormal];
[cancelButton setBackgroundImage:[UIImage imageNamed:#"yyyy.png"] forState:UIControlStateHighlighted];
}
}
I'll give a detailed answered regarding the UIAppearance technique. First, you need to understand that the cancel button is a private UINavigationButton:UIButton. After some inspection, it appears that UINavigationButton will respond to those UIAppearance selectors:
// inherited from UINavigationButton
#selector(setTintColor:)
#selector(setBackgroundImage:forState:style:barMetrics:)
#selector(setBackgroundImage:forState:barMetrics:)
#selector(setTitleTextAttributes:forState:)
#selector(setBackgroundVerticalPositionAdjustment:forBarMetrics:)
#selector(setTitlePositionAdjustment:forBarMetrics:)
#selector(setBackButtonBackgroundImage:forState:barMetrics:)
#selector(setBackButtonTitlePositionAdjustment:forBarMetrics:)
#selector(setBackButtonBackgroundVerticalPositionAdjustment:forBarMetrics:)
// inherited from UIButton
#selector(setTitle:forState:)
Coincidentally, those selectors match those of a UIBarButtonItem. Meaning the trick is to use two separate UIAppearance to handle the private class UINavigationButton.
/* dual appearance technique by Cœur to customize a UINavigationButton */
Class barClass = [UISearchBar self];
UIBarButtonItem<UIAppearance> *barButtonItemAppearanceInBar = [UIBarButtonItem appearanceWhenContainedIn:barClass, nil];
[barButtonItemAppearanceInBar setTintColor:...];
[barButtonItemAppearanceInBar setBackgroundImage:... forState:... style:... barMetrics:...];
[barButtonItemAppearanceInBar setBackgroundImage:... forState:... barMetrics:...];
[barButtonItemAppearanceInBar setTitleTextAttributes:... forState:...];
[barButtonItemAppearanceInBar setBackgroundVerticalPositionAdjustment:... forBarMetrics:...];
[barButtonItemAppearanceInBar setTitlePositionAdjustment:... forBarMetrics:...];
// only for a backButton in an UINavigationBar, not for a cancelButton in an UISearchBar
//[barButtonItemAppearanceInBar setBackButtonBackgroundImage:... forState:... barMetrics:...];
//[barButtonItemAppearanceInBar setBackButtonTitlePositionAdjustment:... forBarMetrics:...];
//[barButtonItemAppearanceInBar setBackButtonBackgroundVerticalPositionAdjustment:... forBarMetrics:...];
UIButton<UIAppearance> *buttonAppearanceInBar = [UIButton appearanceWhenContainedIn:barClass, nil];
// warning: doesn't work for iOS7+
[buttonAppearanceInBar setTitle:... forState:...];
This will let you customize your Cancel button as much as you want.
After you've initialized your UISearchBar, you can probe into it's subviews and customize each of them. Example:
for (UIView *view in searchBar.subviews) {
//if subview is the button
if ([[view.class description] isEqualToString:#"UINavigationButton"]) {
//change the button images and text for different states
[((UIButton *)view) setEnabled:YES];
[((UIButton *)view) setTitle:nil forState:UIControlStateNormal];
[((UIButton *)view) setImage:[UIImage imageNamed:#"button image"] forState:UIControlStateNormal];
[((UIButton *)view) setBackgroundImage:[UIImage imageNamed:#"button"] forState:UIControlStateNormal];
[((UIButton *)view) setBackgroundImage:[UIImage imageNamed:#"button_pressed"] forState:UIControlStateSelected];
[((UIButton *)view) setBackgroundImage:[UIImage imageNamed:#"button_pressed"] forState:UIControlStateHighlighted];
//if the subview is the background
}else if([[view.class description] isEqualToString:#"UISearchBarBackground"]) {
//put a custom gradient overtop the background
CAGradientLayer *gradient = [CAGradientLayer layer];
gradient.frame = view.bounds;
gradient.colors = [NSArray arrayWithObjects:(id)[[some uicolor] CGColor], (id)[[another uicolor] CGColor], nil];
[view.layer insertSublayer:gradient atIndex:0];
//if the subview is the textfield
}else if([[view.class description] isEqualToString:#"UISearchBarTextField"]){
//change the text field if you wish
}
}
Worked out great for me! Especially the gradient :)
Swift 2.1.1:
There's no simple way to hook in and style the search bar, you need to grab the subview manually from the search bar and then apply your changes.
var cancelButton: UIButton
let topView: UIView = self.customSearchController.customSearchBar.subviews[0] as UIView
for subView in topView.subviews {
if subView.isKindOfClass(NSClassFromString("UINavigationButton")!) {
cancelButton = subView as! UIButton
cancelButton.enabled = true
cancelButton.setTitle("TestTitle", forState: UIControlState.Normal) // Change to set the title
cancelButton.setBackgroundImage(UIImage(named: "ImageName"), forState: .Normal) // Change this to set a custom cancel button image, set the title to "" to remove 'Cancel' text
}
}
First of all I'd like to thank #Eliott from this https://stackoverflow.com/a/37381821/1473144
I had to make a few adjustments for his answer to work in my specs that go below.
Please, I ask the OP to update the accepted answer as it's VERY outdated.
Swift 3, iOS 10 & Xcode 8.2.1
searchBar.showsCancelButton = true
var cancelButton: UIButton
let topView: UIView = self.searchBar.subviews[0] as UIView
for subView in topView.subviews {
if let pvtClass = NSClassFromString("UINavigationButton") {
if subView.isKind(of: pvtClass) {
cancelButton = subView as! UIButton
cancelButton.setTitle("", for: .normal)
cancelButton.tintColor = UIColor.black
cancelButton.setImage(#imageLiteral(resourceName: "searchX"), for: .normal)
}
}
}
Well, here is function, which can change Cancel's button label. Modify it, if you want.
Usage is:
nStaticReplaceStringInView(mySearchBar, #"Cancel", #"NewCancelButtonLabel");
void nStaticReplaceStringInView(UIView * view, NSString * haystack, NSString * needle)
{
for(int i=0; i<[view.subviews count]; i++)
{
nStaticReplaceStringInView([view.subviews objectAtIndex:i], haystack,needle);
}
if([view respondsToSelector:#selector(titleForState:)])
{
//NSLog(#"%# || %#",[view titleForState:UIControlStateNormal], haystack);
if(NSStrEq([view titleForState:UIControlStateNormal] , haystack))
{
[view setTitle: needle forState: UIControlStateNormal];
}
}
}
- (void) searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar
{
NSArray *arr = [theSearchBar subviews];
UIButton *cancelButton = [arr objectAtIndex:3];
[cancelButton setTitle:#"yourtitle" forState:UIControlStateNormal];
}
Just take a log of arr amd see at which index control lies. In the same way u can set UITextField properties:
NSArray *arr = [searchbar subviews];
UITextField *searchfield = [arr objectAtIndex:2];
[searchfield setTextAlignment:UITextAlignmentRight];
I have many UISearchBar items throughout my app, so I wrote this category to add a property so you can access mySearchBar.cancelButton. (If you're new to categories, read more about extending objects with Categories here.)
Keep in mind you should only access this when the Cancel button is visible because UISearchBar seems to create a new button object every time it shows. Don't save the pointer to the cancelButton, just get it when needed:
#interface UISearchBar (cancelButton)
#property (readonly) UIButton* cancelButton;
- (UIButton *) cancelButton;
#end
#implementation UISearchBar (cancelButton)
- (UIButton *) cancelButton {
for (UIView *subView in self.subviews) {
//Find the button
if([subView isKindOfClass:[UIButton class]])
{
return (UIButton *)subView;
}
}
NSLog(#"Error: no cancel button found on %#", self);
return nil;
}
#end
stupid way
for(id cc in [SearchBar subviews])
{
if([cc isKindOfClass:[UIButton class]])
{
UIButton *btn = (UIButton *)cc;
......
Do whatever you want
.......
}
}
extension UISearchBar {
var cancelButton : UIButton? {
let topView: UIView = self.subviews[0] as UIView
if let pvtClass = NSClassFromString("UINavigationButton") {
for v in topView.subviews {
if v.isKind(of: pvtClass) {
return v as? UIButton
}
}
}
return nil
}
}
UISearchBar *searchBar;
[searchBar setShowsCancelButton:YES animated:YES];
UIButton *cancelButton =
YES == [searchBar respondsToSelector:NSSelectorFromString(#"cancelButton")] ?
[searchBar valueForKeyPath:#"_cancelButton"] : nil;
cancelButton.titleEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 10);
[cancelButton setTitle:#"New :)" forState:UIControlStateNormal];
For iOS 11 and Swift 4.
Create a subclass of UISearchController.
Override method:
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
print("layout")
if let btn = searchBar.subviews[0].subviews[2] as? UIButton {
btn.frame = CGRect(x: 306, y: 20, width: 53, height: 30)
}
}
For iOS 10 & above, use following method
[[UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:#[[UISearchBar class]]] setTintColor:[UIColor blackColor]];
The best way to style the cancelButton is without using UIAppearance is like this it is for Swift5 iOS13 and it works best with UISearchResultController.searchBar too
extension UISearchBar {
func changeSearchBarAppearance(appearance: MyAppearance) {
self.barTintColor = appearance.searchbar.barTintColor
self.tintColor = appearance.searchbar.tintColor
if let textField = self.subviews.first?.subviews.last?.subviews.first {
textField.tintColor = .black
}
}
}
setting serachBar tintColor will set the tintColor of all items including the cancelButton but with this the blinker in the searchField will also be set with the same tintColor so find the textfield and set its tintColor will solve the blinker issue