I created a button in storyboard with a circular form using layer.cornerRadius in the key path. I want to add an image to it. How can I add an image to my button and the image is fit the same size of my button
Use this to set image size to adjust button size:
[btn setImage:[UIImage imageNamed:#"image_name"] forState:UIControlStateNormal];
btn.imageView.contentMode = UIViewContentModeScaleAspectFit; //set to fit button size
It should be like this
UIImage *btnImage = [UIImage imageNamed:#"image.png"];
[buttonName setImage:btnImage forState:UIControlStateNormal];
Write the below code in viewDidAppear instead of viiewDidLoad
buttonName.layer.masksToBounds = YES;
buttonName.layer.cornerRadius = 20;//half of the button height
Try this to fit image to Button :
UIButton *button =[[UIButton alloc]initWithFrame: CGRectMake(10, 10, 50, 32)];
[button setImage:[UIImage imageNamed:#"image_name"] forState:UIControlStateNormal];
// to set image to fit button size
button.imageView.contentMode = UIViewContentModeScaleAspectFit;
//ScaleToFill (UIViewContentModeScaleToFill)
//ScaleAspectFit (UIViewContentModeScaleAspectFit)
//ScaleAspectFill (UIViewContentModeScaleAspectFill)
I want to add image as button, and when it is clicked it should open a new view controller...
Does anyone know how to do?
I created a button and added image, but its not nice, because when I click on the image it animates a square arround the image, which I do not want. This what I did.
- (void)setTutorialButtonImage
{
[self.tutorialButton setImage:[UIImage imageNamed:#"app_logo.png"] forState:UIControlStateNormal];
}
Does any one know how to do... just an image and when I click on it start a new controller
You can disable the highlighting effect by using
self.tutorialButton.adjustsImageWhenHighlighted = NO;
Also try setting the same image for selected and highlighted states too
[button setBackgroundImage:[UIImage imageNamed:#"app_logo.png"] forState: UIControlStateHighlighted];
[button setBackgroundImage:[UIImage imageNamed:#"app_logo.png"] forState: UIControlStateSelected];
For better look and feel you can apply insets on image using
- (UIImage *)resizableImageWithCapInsets:(UIEdgeInsets)capInsets
UIButton *sampleButton = [UIButton buttonWithType:UIButtonTypeCustom];
[sampleButton setFrame:CGRectMake(x, y, width, height)];
[sampleButton setBackgroundImage:[UIImage imageNamed:#"image.png"] forState:UIControlStateNormal];
[sampleButton addTarget:self action:#selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:sampleButton];
I added a new UIButton
UIButton *newButton = [UIButton buttonWithType:UIButtonTypeCustom];
[newButton setFrame:CGRectMake(x, y, width, height)];
[newButton setTitle:#"" forState:UIControlStateNormal];
[newButton setTag:x+INDEX_OFFSET];
[newButton setBackgroundImage:image forState:UIControlStateNormal];
[newButton addTarget:self action:#selector(buttonPressed) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:newButton];
[self bringSubviewToFront:newButton];
and I can see it on the screen but it is not responding to a tap gesture. It should call "buttonPressed". Any help would be super!
One of the possible problem is that you are adding the button in a frame position out its superview. Just to check it easily try to set clipToBounds property to YES in its superview bounds, then run the app. If you don't see the button it means that you set the button position out superivew position, that's why it doesn't respond to touches.
Another possible problem is if you add the UIButton as a subview to an UIImageView (which you shouldn't, but it works). In this case, you could either add it to a UIView or set UIImageView's userInteractionEnabled property to YES.
I am adding custom navigation buttons to my navigation bars via the following code.
//Instance method in CustomNavButton Class
-(UIButton*)setupButtonWithImage:(UIImage*)image andFrame:(CGRect)frame
{
UIButton *button = [[[UIButton alloc]initWithFrame:frame]autorelease];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake((frame.size.width-20)/2, (frame.size.height-20)/2, 20, 20)];
imageView.image = image;
UIImage *buttonImageNormal = [UIImage imageNamed:#"customBtn_black"];
UIImage *stretchableButtonImageNormal = [buttonImageNormal
stretchableImageWithLeftCapWidth:12 topCapHeight:0];
button.titleLabel.font = [UIFont boldSystemFontOfSize:12];
[button setBackgroundImage:stretchableButtonImageNormal
forState:UIControlStateNormal];
[button setTitleShadowColor:[UIColor whiteColor] forState:UIControlStateNormal];
[button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
[button addSubview:imageView];
return button;
}
//Call CustomNavButton and add to Navbar
- (void)viewDidLoad
{
[super viewDidLoad];
//Add left invite friends button
CustomNavButton *leftButton = [[CustomNavButton alloc]initWithImage:[UIImage imageNamed:#"friends_1"] andFrame:CGRectMake(0, 0, 40, 32)];
[leftButton.customNavButton addTarget:self action:#selector(inviteButtonPressed) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *leftBarButton = [[UIBarButtonItem alloc]initWithCustomView:leftButton];
self.navigationItem.leftBarButtonItem = leftBarButton;
[leftButton release];
}
The navigation buttons appear fine on my iPhone (IOS5 with Retina Display)
However, the buttons look distorted on my simulator (or non-retina display)
How can I resolve this? How can I display the buttons properly even for non-retina displays?
Note that I have created the #2x buttons for this as well
EDIT:
It seems like the issue likes with the stretching of the image
UIImage *stretchableButtonImageNormal = [buttonImageNormal
stretchableImageWithLeftCapWidth:12 topCapHeight:0];
If I change the leftCapWidth value to 0, the buttons on the simulator looks better (but still bad).
But by doing this, it will cause my retina display button look a little distorted (seems like I can't win).
Can anyone advise if the problem does really lie here, and how I can alter the values so that it works well for both retina and non-retina displays?
Do you have two files? MyImage.png and MyImage#2x.png? It looks like the system is trying to resize the #2x file by scaling it down, which usually causes some jaggedness like this when it is simply scaled down.
MyImage.png should be half the size of MyImage#2x.png.
Your not setting the file format .png or whatever it is you have. And as Chris said you need two files regular and #2x.
This one has me stumped.
Is it possible at all to change the background color of a UIButton in Cocoa for iPhone.
I've tried setting the background color but it only changes the corners. setBackgroundColor: seems to be the only method available for such things.
[random setBackgroundColor:[UIColor blueColor]];
[random.titleLabel setBackgroundColor:[UIColor blueColor]];
This can be done programmatically by making a replica:
loginButton = [UIButton buttonWithType:UIButtonTypeCustom];
[loginButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
loginButton.backgroundColor = [UIColor whiteColor];
loginButton.layer.borderColor = [UIColor blackColor].CGColor;
loginButton.layer.borderWidth = 0.5f;
loginButton.layer.cornerRadius = 10.0f;
edit: of course, you'd have to #import <QuartzCore/QuartzCore.h>
edit: to all new readers, you should also consider a few options added as "another possibility". for you consideration.
As this is an old answer, I strongly recommend reading comments for troubleshooting
I have a different approach,
[btFind setTitle:NSLocalizedString(#"Find", #"") forState:UIControlStateNormal];
[btFind setBackgroundImage:[CommonUIUtility imageFromColor:[UIColor cyanColor]]
forState:UIControlStateNormal];
btFind.layer.cornerRadius = 8.0;
btFind.layer.masksToBounds = YES;
btFind.layer.borderColor = [UIColor lightGrayColor].CGColor;
btFind.layer.borderWidth = 1;
From CommonUIUtility,
+ (UIImage *) imageFromColor:(UIColor *)color {
CGRect rect = CGRectMake(0, 0, 1, 1);
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
// [[UIColor colorWithRed:222./255 green:227./255 blue: 229./255 alpha:1] CGColor]) ;
CGContextFillRect(context, rect);
UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}
Don't forget to #import <QuartzCore/QuartzCore.h>
I assume you're talking about a UIButton with UIButtonTypeRoundedRect?
You can't change the background color of that. When you try changing it's background color you're rather changing the color of the rect the button is drawn on (which is usually clear).
So there are two ways to go. Either you subclass UIButton and overwrite its -drawRect: method or you create images for the different button states (which is perfectly fine to do).
If you set the background images in Interface Builder you should notice that IB doesn't support setting images for all the states the button can have, so I recommend setting the images in code like this:
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeCustom];
[myButton setBackgroundImage:[UIImage imageNamed:#"normal.png"] forState:UIControlStateNormal];
[myButton setBackgroundImage:[UIImage imageNamed:#"disabled.png"] forState:UIControlStateDisabled];
[myButton setBackgroundImage:[UIImage imageNamed:#"selected.png"] forState:UIControlStateSelected];
[myButton setBackgroundImage:[UIImage imageNamed:#"higligted.png"] forState:UIControlStateHighlighted];
[myButton setBackgroundImage:[UIImage imageNamed:#"highlighted+selected.png"] forState:(UIControlStateHighlighted | UIControlStateSelected)];
The last line shows how to set an image for the selected & highlighted state (that's the one IB can't set).
You don't need the selected images (line 4 & 6) if you're button dosn't need a selected state.
Another possibility:
Create a UIButton in Interface builder.
Give it a type 'Custom'
Now, in IB it is possible to change the background color
However, the button is square, and that is not what we want. Create an IBOutlet with a reference to this button and add the following to the viewDidLoad method:
[buttonOutlet.layer setCornerRadius:7.0f];
[buttonOutlet.layer setClipToBounds:YES];
Don't forget to import QuartzCore.h
Subclass UIButton and override setHighlighted and setSelected methods
-(void) setHighlighted:(BOOL)highlighted {
if(highlighted) {
self.backgroundColor = [self.mainColor darkerShade];
} else {
self.backgroundColor = self.mainColor;
}
[super setHighlighted:highlighted];
}
-(void) setSelected:(BOOL)selected {
if(selected) {
self.backgroundColor = [self.mainColor darkerShade];
} else {
self.backgroundColor = self.mainColor;
}
[super setSelected:selected];
}
My darkerShade method is in a UIColor category like this
-(UIColor*) darkerShade {
float red, green, blue, alpha;
[self getRed:&red green:&green blue:&blue alpha:&alpha];
double multiplier = 0.8f;
return [UIColor colorWithRed:red * multiplier green:green * multiplier blue:blue*multiplier alpha:alpha];
}
If you are not wanting to use images, and want it to look exactly like the Rounded Rect style, try this. Just place a UIView over the UIButton, with an identical frame and auto resize mask, set the alpha to 0.3, and set the background to a color. Then use the snippet below to clip the rounded edges off the colored overlay view. Also, uncheck the 'User Interaction Enabled' checkbox in IB on the UIView to allow touch events to cascade down to the UIButton underneath.
One side effect is that your text will also be colorized.
#import <QuartzCore/QuartzCore.h>
colorizeOverlayView.layer.cornerRadius = 10.0f;
colorizeOverlayView.layer.masksToBounds = YES;
Another possibility (the best and most beautiful imho):
Create a UISegmentedControl with 2 segments in the required background color in Interface Builder. Set the type to 'bar'. Then, change it to having only one segment. Interface builder does not accept one segment so you have to do that programmatically.
Therefore, create an IBOutlet for this button and add this to the viewDidLoad of your view:
[segmentedButton removeSegmentAtIndex:1 animated:NO];
Now you have a beautiful glossy, colored button with the specified background color.
For actions, use the 'value changed' event.
(I have found this on http://chris-software.com/index.php/2009/05/13/creating-a-nice-glass-buttons/). Thanks Chris!
Well I'm 99% percent positive that you cannot just go and change the background color of a UIButton. Instead you have to go and change the background images yourself which I think is a pain. I'm amazed that I had to do this.
If I'm wrong or if theres a better way without having to set background images please let me know
[random setBackgroundImage:[UIImage imageNamed:#"toggleoff.png"] forState:UIControlStateNormal];
[random setTitleColor:[UIColor darkTextColor] forState:UIControlStateNormal];
[random setBackgroundImage:[UIImage imageNamed:#"toggleon.png"] forState:UIControlStateNormal];
[random setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
Per #EthanB suggestion and #karim making a back filled rectangle, I just created a category for the UIButton to achieve this.
Just drop in the Category code: https://github.com/zmonteca/UIButton-PLColor
Usage:
[button setBackgroundColor:uiTextColor forState:UIControlStateDisabled];
Optional forStates to use:
UIControlStateNormal
UIControlStateHighlighted
UIControlStateDisabled
UIControlStateSelected
You can also add a CALayer to the button - you can do lots of things with these including a color overlay, this example uses a plain color layer you can also easily graduate the colour. Be aware though added layers obscure those underneath
+(void)makeButtonColored:(UIButton*)button color1:(UIColor*) color
{
CALayer *layer = button.layer;
layer.cornerRadius = 8.0f;
layer.masksToBounds = YES;
layer.borderWidth = 4.0f;
layer.opacity = .3;//
layer.borderColor = [UIColor colorWithWhite:0.4f alpha:0.2f].CGColor;
CAGradientLayer *colorLayer = [CAGradientLayer layer];
colorLayer.cornerRadius = 8.0f;
colorLayer.frame = button.layer.bounds;
//set gradient colors
colorLayer.colors = [NSArray arrayWithObjects:
(id) color.CGColor,
(id) color.CGColor,
nil];
//set gradient locations
colorLayer.locations = [NSArray arrayWithObjects:
[NSNumber numberWithFloat:0.0f],
[NSNumber numberWithFloat:1.0f],
nil];
[button.layer addSublayer:colorLayer];
}
add a second target for the UIButton for UIControlEventTouched and change the UIButton background color. Then change it back in the UIControlEventTouchUpInside target;
For professional and nice looking buttons, you may check this custom button component. You can use it directly in your views and tableviews or modify the source code to make it meet your needs. Hope this helps.
This isn't as elegant as sub-classing UIButton, however if you just want something quick - what I did was create custom button, then a 1px by 1px image with the colour I'd want the button to be, and set the background of the button to that image for the highlighted state - works for my needs.
I know this was asked a long time ago and now there's a new UIButtonTypeSystem. But newer questions are being marked as duplicates of this question so here's my newer answer in the context of an iOS 7 system button, use the .tintColor property.
let button = UIButton(type: .System)
button.setTitle("My Button", forState: .Normal)
button.tintColor = .redColor()
[myButton setBackgroundColor:[UIColor blueColor]];
[myButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
It's possible change this way or going on Storyboard and change background on options in right side.
Swift 3:
static func imageFromColor(color: UIColor, width: CGFloat, height: CGFloat) -> UIImage {
let rect = CGRect(x: 0, y: 0, width: width, height: height)
UIGraphicsBeginImageContext(rect.size)
let context = UIGraphicsGetCurrentContext()!
context.setFillColor(color.cgColor)
context.fill(rect)
let img = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return img
}
let button = UIButton(type: .system)
let image = imageFromColor(color: .red, width:
button.frame.size.width, height: button.frame.size.height)
button.setBackgroundImage(image, for: .normal)
For iOS 15+ Apple provides a simple button configuration to accomplish this.
Objective-C:
randomButton.configuration = [UIButtonConfiguration filledButtonConfiguration];
Swift:
randomButton.configuration = .filled()