I'm trying to make a UIImageView with round corners, so I used [imageView.layer setCornerRadius:5.0f]; it works but not perfectly.
If you look closely, you can see the corners of the image(I uploaded a photo, I don't know if you can see it clearly, there are blue parts in the corners). How should I remove these? thank you.
(P.S.: I also set the border of the view, is that the reason why?)
UIImageView doesn't clip to bounds by default. So while the corner radius is applied its still drawing outside of its designated area.
objc:
[imageView setClipsToBounds:YES];
swift:
imageView.clipsToBounds = true
Related
How can I programmatically apply a circular crop out to a UIImage or a UIImageView? Is it possible, or must I use a graphical mask?
Till now I am using a graphical mask (a png image) but the final crop out result is ovalized, rather than a perfect circle.
[imageView setContentMode: UIViewContentModeScaleAspectFit];
[imageView setContentMode: UIViewContentModeScaleAspectFill];
also do not solve the problem.
Please note that the UIImageView that the image is applied to is already defined exactly as a square in IB.
If the UIImageView is already a square then you can set the corner radius of its layer to half of its width/height
[imageView.layer setCornerRadius:imageView.frame.size.width / 2.0];
[imageView.layer setMasksToBounds:YES];
I've got a UIImageView which has a height greater than its UIImage. It is scaling the image to it's width, but since it's height is greater, it is showing the rest of the UIImageView as transparent (what you would expect from UIViewContentModeScaleAspectFit, which is what the UIImageView's contentMode is set to)
However, it is making the top and bottom of the UIImage transparent, basically, positioning the image in the center of itself. How can I get it to position itself at the top? When I use UIViewContentModeTop, it makes the image too large, so that doesn't work for me. I want some sort of way to scale it just as it does with UIVIewContentModeScaleAspectFill but tell it to also position the scaled image at the top of itself. Anyone have any ideas on how to do that?
I would also be able to fix the issue by just trimming the UIImageView's height to be equal to what the UIImage is once it's been stretched to the boundaries of its superview, but that seems like a more complex solution.
try something like,
UIImage *img = [UIImage imageNamed#"yourImageName.jpeg"];
yourImageView.contentMode = UIViewContentModeScaleAspectFit;
yourImageView.clipsToBounds = YES;
[yourImageView setImage:img];
Basic issue:
I believe the trick is with masking, but I am not able to get a good hold of how this is set.
Basically I have a bright image (set to a uiimageview object), and I have a label at very bottom (which is added on top of the image view) needs a well readable white text on it. Right now, the white text is hard to read (because of the bright background).
What I am doing:
I am setting a mask for the image view with something like
http://cl.ly/image/0i0N1p271d42
maskContainer = [CALayer layer];
UIImage *maskImg = [UIImage imageNamed:#"mask_profile"];
[maskContainer setContents:(id)[maskImg CGImage]];
CGRect frma = maskContainer.frame;
frma.size.width = self.frame.size.width;
frma.size.height = self.frame.size.height;
maskContainer.frame = frma;
[self.imageView.layer setMask:maskContainer];
Its messed up. The overall image starts fading on top.
Can anyone share their insight on the right way to mask?
You could set a drop shadow on your text to make is stand out even over a white background:
myLabel.layer.shadowOpacity = 0.8f;
myLabel.layer.shadowOffset = CGSizeMake(0, 0);
Easiest option is to adjust the alpha on the UILabel to the desired darkness in order to make the text stand out. If you do not want to hide the image and the image itself serves as a dark background, then set the alpha on the label to 0.
The best way to do this is to place the label in a uiview then create a gradient to apply as the background to the uiview. You can create the gradient as either an image with transparency or you can draw it in code. This will create a darkening effect on you bright image just behind the label so the text will pop.
UIButton top border appears thicker than the following ,but sometimes correct ，why?
code:
UIImage * sanImage = [UIimage imageNamed:#"product_bt1_normal"];
[self.saveBtn setBackgroundImage:[sanImage
stretchableImageWithLeftCapWidth:sanImage.size.width/3
topCapHeight:sanImage.size.height/3] forState:UIControlStateNormal];
Are you trying to make a button? If so, perhaps use a UIButton instead? You can control the border with button.layer.borderWidth = 1.0f
If you're set on using an image, create a UIImageView, and modify the border thickness that way:
UIImageView *iv = [[UIImageView alloc] initWithImage:sanImage];
[iv.layer setBorderWidth:0.5f];
It could be because of off-pixel boundaries. Since you are using height/3.0f, your image is maybe not returning a well-behaved image.
Also, there is a new stretchable image method you should be using, resizableImageWithCapInsets:.
So try this code out:
[self.saveBtn setBackgroundImage:[sanImage resizableImageWithCapInsets:UIEdgeInsetsMake(3.0f, 3.0f, 3.0f, 3.0f)] forState:UIControlStateNormal];
You might need to mess with the values for the insets a bit, I don't know the dimensions of your button image.
I would like to how can I apply this effect in iPhone SDK?
So, I have an image and a label on top of it.
I want to have the effect in which the bottom portion kind of blends in with the image.
So that there is no clear demarcation from where the image ends at the bottom portion of the view.
Please let me know.
Easy way to achieve this to CAGradientLayer
UIView *yourGradientView; // with that label "ENTREES", Add this view as a subview of the background view.
CAGradientLayer *gradientLayer=[CAGradientLayer layer];
[gradientLayer setFrame:[yourGradientView bounds]];
[gradientLayer setColors:#[(id)[UIColor clearColor].CGColor, (id)[[UIColor whiteColor] colorWithAlphaComponent:0.7f].CGColor]];
[gradientLayer setLocations:#[[NSNumber numberWithFloat:0.50f], [NSNumber numberWithFloat:1.0f]]];
[[yourGradientView layer] insertSublayer:gradientLayer atIndex:0];
Easiest solution: Add UIImageView with gradient PNG image as a subview between the image and label if you have the constant color.
If you need variable color of the gradient, you can either add a subview with the gradient drawn using CoreGraphics or CALayer.
If you need the image to blend with any background, you can mask the background image layer with CALayer gradient layer.
Unless you provide any more details to your question with regards to functionality and some code, the first look instance seems to have the following solution:
Step 1
Set a UIImage as a background image. In your case it is the one shown in the question.
Step 2 add a UILabel as a subview of UIImage and set the background of UILabel to be transparent. Position the label as per your needs which in your case seems to be the bootom left.
Hope his helps !!!