My code to change button size when press:
[_btnClick setImage:image forState:UIControlStateNormal];
// oldPosition =CGPointMake(sender.bounds.origin.x, sender.bounds.origin.y);
_btnClick.frame = CGRectMake(oldPosition.x+20 , oldPosition.y+10, 500, 500);
but when i press button, just image change and button size not change to new size.
How i fix it. Thank' for help.
In a related question, an explanation is provided. The only thing that seems valid would be to do what the top answer says. Disable Auto layout
Related
I have a UIButton created in a Storyboard. It has no special constraints / insets or anything. The only changes in code to it are :
[btn setBackgroundImage: [UIImage imageNamed:#"SomeImage"]];
[btn setTitle:#"Done"];
However, the button seems to be middled up whenever I use it in Autolayout :
The only way I could get it back was when I changed the background image to something else, like in :
So there seems to be something rather messed up with the Background image. However, I don't get why it doesn't work badly in pre-iOS8 then. Also, when I changed the insets :
self.closeButton.contentEdgeInsets = UIEdgeInsetsMake(-15.0, 0.0, 0.0, 0.0);
Then I got the content inside the Button again. But now, the iOS-7 button was misaligned. Can someone help me out over here?
This is an iOS bug, fixed in iOS 8.1
I have a button that has contentMode set to UIViewContentModeScaleAspectFill. I set it like this:
self.itemImage.imageView.contentMode = UIViewContentModeScaleAspectFill;
I also set it to Mode - Aspect Fill in IB for the button, just in case. And when I set the image, I DON'T set is as a background image:
[self.itemImage setImage:image forState:UIControlStateNormal];
However, occasionally my image does not fill the button (which I want it to do), like in this case:
See grey spaces on each side. Occurs on both iOS 6 and 7.
Any ideas?
At long last, I managed to find the solution that works in Alfie's answer to this SO question.
In short, if your UIButton (or its hidden imageView) does not respond to contentMode, use this code:
self.button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentFill;
self.button.contentVerticalAlignment = UIControlContentVerticalAlignmentFill;
There's are a lot of links how to size a label, however there's a lack of info how to resize UIButton according to its label size. Currently, I have screen view set with autolayout (all the system constraints are added from IB) and everything works fine, but need to add dynamic content at the bottom of the screen. I need to create and add random number of buttons with random length titles. So, here's code fragment for creating and adding the buttons:
// Loop
UIButton *myButton = [UIButton new];
UIButton.frame = CGRectMake(0, previousButtonOriginY, self.view.bounds.size.width, 20);
myButton.titleLabel.lineBreakMode = NSLineBreakByWordWrapping;
myButton.titleLabel.textAlignment = NSTextAlignmentLeft;
myButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
[myButton setTitle:#"very long title..." forState:UIControlStateNormal];
myButton.titleLabel.numberOfLines = 0;
[self.footerView addSubview:myButton];
The problem is the frame height of the button stays 20px but the label string is shown on three lines and so overlaps with the other button title. If I add [myButton sizeToFit] then button width is resized to fit all the text into one line and so the title goes beyond the screen.
If I add [myButton sizeThatFits:CGSizeMake(320, 100)] then resize is not working at all. I know sizeToFit should not be called at all because it's not the part of autolayout, however need suggestions on that how easily to make button fit its label to screen 320 width.
I feel I need to add system constraints from code, but haven't done that before, so not sure how it should look like. I probably need a ton of constraints to be added from code in order to get this simple thing working :)
Instead of using Autolayout, you could just use a collection view which better options for you to lay out elements such as buttons.
It is better able to handle layouts under rotation as well.
Or you can use this code, it worked for me...
For example, substitute your desired padding values here:
UIButton* myButton = [[UIButton alloc] init];
// setup some autolayout constraints here
myButton.titleEdgeInsets = UIEdgeInsetsMake(-desiredBottomPadding,
-desiredRightPadding,
-desiredTopPadding,
-desiredLeftPadding);
Combined with the right autolayout constraints, you end up with an auto-resizing button which contains an image and text!
For this kind of customizations you'll need to create a subclass of UIButton. In the subclass you can add a customized label which benefits your needs. You can also override to setTitle:forState method to automatically update your customized label.
When I set the title of the UIButton in the xib, it works fine, but when I set the same text programatically to the title of the button it is trimmed.
BUY THIS FILM FOR 20.00$ -> BUY THIS FI...FOR 20.00$
Try this way:
[_button setTitle:#"BUY THIS FILM FOR 20.00$" forState:UIControlStateNormal];
What is displayed in interface builder when you edit the xib is not guaranteed to look exactly like when it is loaded on the simulator or device.
Solution: just make your Button a little bit wider.
Also, double check that the text is exactly the same as in IB.
Try this way:
btnObj.titlelabel.minimumFontSize = 8.0; // or some more adequate size
btnObj.titleLabel.adjustsFontSizeToFitWidth = YES;
I'm trying to create a custom UITableViewCell programmatically and one of the subviews of this cell is going to be a button with an image in it (a simple image of a magnifying glass). However, I want the button's image to be centered and scaled proportionately down to fit in the button and NOT to be stretched to fill the entire button. Below is my code where self refers to the custom UITableViewCell which I am placing the button into.
self.myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[self.myButton setBackgroundImage:[UIImage imageNamed: #image_name_here"] forState:UIControlStateNormal];
self.myButton.frame = CGRectMake(...//something, something)
self.myButton.imageView.contentMode = UIViewContentModeCenter;
[self.contentView addSubview:self.mySearchHelpButton];
Right now the image stretches to fill the entire button rather than scaling proportionately so that it fits nicely.
I have also tried setting the contentMode to UIViewContentModeScaleAspectFill but this doesn't seem to change anything. In fact, none of the different contentModes seem to change anything.
Have you tried setImage instead of setBackgroundImage?
Make sure the button is a Custom UIButton
Just using setImage: did not work for me on iOS9.
But it worked combined with myButton.imageView.contentMode = UIViewContentMode.ScaleAspectFit;
In Swift...
button.imageView?.contentMode = . scaleAspectFit
Storyboard
Property image.
You must define specific property in Runtime Attributes of Identity inspector – imageView.contentMode, where you set value relatively to rawValue position of enum UIViewContentMode. 1 means scaleAspectFit.
And button's alignment, in Attributes inspector:
Swift 4.2
myButton.imageView!.contentMode = .scaleAspectFit
Swift earlier version
myButton.imageView!.contentMode = UIViewContentMode.scaleAspectFit
Swift 4.X and 5.X
button.imageView!.contentMode = .scaleAspectFit
button.contentVerticalAlignment = .fill
button.contentHorizontalAlignment = .fill
I think you guys are missing the obvious issue. The image is too large for the button and iOS then has to guess how you want to scale it. Make sure your images are the right size and you won't have this issue. Of course this is for static images and buttons that you know the size for up-front -- not dynamic content.