I want to set my UItextview s color transparent but not completely transparent. I want little bit gray or black at the background exactly like the picture
I am using this code right now
_textView.backgroundColor = [UIColor clearColor];
how can I make it transparent like in the picture above? Any example Code?
You should use something like this:
_textView.backgroundColor = [UIColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:0.5];
where alpha - parameter for transparent ( 50% in example).
Does this do what you want? (You may need to experiment with the values).
_textView.backgroundColor = [UIColor colorWithWhite:0.5 alpha:0.5];
I want to change the colour of the toolbar to Black from the default blue. How do I do that ? Thanks.
You need to set the barStyle on the UINavigationBar to UIBarStyleBlack:
navigationController.navigationBar.barStyle = UIBarStyleBlack;
If you need to set it to some other color, you will need to set the tintColor property:
navigationController.navigationBar.tintColor = [UIColor blackColor];
You can read this question if you interested in the benefits of UIBarStyleBlack over a [UIColor blackColor] tintColor.
Use the below code. You can change the color of navigationbar what ever you want. Here I'm using brown , instead of this you can specify another color.
self.navigationController.navigationBar.tintColor = [UIColor brownColor];
I believe you're looking for setTintColor
I am trying to add custom color like how we do in HTML:
<body bgcolor=#ffffff> </body>.
Can we have a similar kind of custom color combination for showing in cells on iPhones?
cell.backgroundColor = [ UIColor whiteColor]; but instead of whiteColor wanna use #ffffff.
How can I implement this?
Use UIColor colorWithRed:green:blue:alpha:. Colors are 0.0 to 1.0, something like this for bright red:
cell.backgroundColor = [UIColor colorWithRed:1.0f green:0 blue:0 alpha1];
For a color such as "808182" it would be:
[UIColor colorWithRed:128/255.0f green:129/255.0f blue:130/255.0f alpha:1];
I am trying to change the UILabel background color with this code
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
m_ShopName.text = m_CurrShop.m_Name;
m_ShopAddress.layer.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0].CGColor;
}
but nothing is happening.
This will help you
UILable *lbl = [[UILabel alloc]initWithFrame:CGRectMake(10,20,50,200)];
lbl.backgroundColor = [UIColor redColor];
Can you do this:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
m_ShopName.text = m_CurrShop.m_Name;
m_ShopAddress.backgroundColor = [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.0];
}
I always did the following
m_ShopAddress.backgroundColor = [UIColor red];
When I wanted to change the alpha...
m_ShopAddress.alpha = 0.0f;
An alpha value of 0 means, it's fully transparent. That's probably why nothings happens (whatever you mean by that).
And I wouldn't access the background color of the layer, but of the UILabel directly.
If you are using a storyboard, check to see if you have a color for the view background in the storyboard. The view background color was overriding the layer color for me. I changed the background color for the view in the storyboard to default and this fixed it for me.
So I had the code:
func select() -> Void {
imageViewBackgroundView.layer.backgroundColor = UIColor.black.cgColor
cellImageView.layer.backgroundColor = UIColor.black.cgColor
cellLabel.layer.backgroundColor = UIColor.black.cgColor
cellLabel.textColor = UIColor.white
}
The cellLabel was the view background that was not changing. I had at one time set a background color for the view in the Storyboard. Once I changed the view background for the cellLabel to default the layer color took effect.
View Background
I know soft shadows are not supported by the UILabel out of the box, on the iPhone. So what would be the best way to implement my own one?
EDIT:
Obviously I will subclass the UILabel and draw in the -drawRect:
My question is, how do I get the contents of the label as graphics and draw around them, blur them etc...
EDIT 2:
I returned to this question about a year later. In the meantime I've built a class that allows you to easily add soft shadow to a label and tweak it's radius etc and also to draw gradients on the text itself. You can find it on GitHub: https://github.com/doukasd/iOS-Components/tree/master/Views
As of 3.2 there is direct support for shadows in the SDK.
label.layer.shadowColor = [label.textColor CGColor];
label.layer.shadowOffset = CGSizeMake(0.0, 0.0);
#import <QuartzCore/QuartzCore.h> and play with some parameters:
label.layer.shadowRadius = 3.0;
label.layer.shadowOpacity = 0.5;
And, if you find your shadow clipped by the label bounds:
label.layer.masksToBounds = NO;
finally set
label.layer.shouldRasterize = YES;
I advise you to use the shadowColor and shadowOffset properties of UILabel:
UILabel* label = [[UILabel alloc] init];
label.shadowColor = [UIColor whiteColor];
label.shadowOffset = CGSizeMake(0,1);
This answer to this similar question provides code for drawing a blurred shadow behind a UILabel. The author uses CGContextSetShadow() to generate the shadow for the drawn text.
Additionally to IIDan's answer:
For some purposes it is necessary to set
label.layer.shouldRasterize = YES
I think this is due to the blend mode that is used to render the shadow. For example I had a dark background and white text on it and wanted to "highlight" the text using a black shadowy glow. It wasn't working until I set this property.
Apply the (soft) shadow on the view's layer, like this:
UILabel *label = [[UIabel alloc] init];
label.layer.shadowColor = [[UIColor whiteColor] CGColor];
label.layer.shadowOpacity = 1.0;
To keep things up to date: Creating the shadow in Swift is as easy as that:
Import the QuartzCore Framework
import QuartzCore
And set the shadow attributes to your label
titleLabel.shadowColor = UIColor.blackColor()
titleLabel.shadowOffset = CGSizeMake(0.0, 0.0)
titleLabel.layer.shadowRadius = 5.0
titleLabel.layer.shadowOpacity = 0.8
titleLabel.layer.masksToBounds = false
titleLabel.layer.shouldRasterize = true
_nameLabel = [[UILabel alloc] initWithFrame:CGRectZero];
_nameLabel.font = [UIFont boldSystemFontOfSize:19.0f];
_nameLabel.textColor = [UIColor whiteColor];
_nameLabel.backgroundColor = [UIColor clearColor];
_nameLabel.shadowColor = [UIColor colorWithWhite:0 alpha:0.2];
_nameLabel.shadowOffset = CGSizeMake(0, 1);
i think you should use the [UIColor colorWithWhite:0 alpha:0.2] to set the alpha value.
I tried almost all of these techniques (except FXLabel) and couldn't get any of them to work with iOS 7. I did eventually find THLabel which is working perfectly for me. I used THLabel in Interface Builder and setup User Defined Runtime Attributes so that it's easy for a non programmer to control the look and feel.
https://github.com/MuscleRumble/THLabel
This like a trick,
UILabel *customLabel = [[UILabel alloc] init];
UIColor *color = [UIColor blueColor];
customLabel.layer.shadowColor = [color CGColor];
customLabel.layer.shadowRadius = 5.0f;
customLabel.layer.shadowOpacity = 1;
customLabel.layer.shadowOffset = CGSizeZero;
customLabel.layer.masksToBounds = NO;
I wrote a library that provides a UILabel subclass with soft shadow support and a bunch of other effects:
https://github.com/nicklockwood/FXLabel
In Swift 3, you can create an extension:
import UIKit
extension UILabel {
func shadow() {
self.layer.shadowColor = self.textColor.cgColor
self.layer.shadowOffset = CGSize.zero
self.layer.shadowRadius = 3.0
self.layer.shadowOpacity = 0.5
self.layer.masksToBounds = false
self.layer.shouldRasterize = true
}
}
and use it via:
label.shadow()
Subclass UILabel, as stated, then, in drawRect:, do [self drawTextInRect:rect]; to get the text drawn into the current context. Once it is in there, you can start working with it by adding filters and whatnot. If you want to make a drop shadow with what you just drew into the context, you should be able to use:
CGContextSetShadowWithColor()
Look that function up in the docs to learn how to use it.
As of iOS 5 Apple provides a private api method to create labels with soft shadows.
The labels are very fast: I'm using dozens at the same time in a series of transparent views and there is no slowdown in scrolling animation.
This is only useful for non-App Store apps (obviously) and you need the header file.
$SBBulletinBlurredShadowLabel = NSClassFromString("SBBulletinBlurredShadowLabel");
CGRect frame = CGRectZero;
SBBulletinBlurredShadowLabel *label = [[[$SBBulletinBlurredShadowLabel alloc] initWithFrame:frame] autorelease];
label.backgroundColor = [UIColor clearColor];
label.textColor = [UIColor whiteColor];
label.font = [UIFont boldSystemFontOfSize:12];
label.text = #"I am a label with a soft shadow!";
[label sizeToFit];
While it's impossible to set a blur radius directly on UILabel, you definitely could change it by manipulating CALayer.
Just set:
//Required properties
customLabel.layer.shadowRadius = 5.0 //set shadow radius to your desired value.
customLabel.layer.shadowOpacity = 1.0 //Choose an opacity. Make sure it's visible (default is 0.0)
//Other options
customLabel.layer.shadowOffset = CGSize(width: 10, height: 10)
customLabel.layer.shadowColor = UIColor.black.cgColor
customLabel.layer.masksToBounds = false
What I hope will help someone and other answers failed to clarify is that it will not work if you also set UILabel Shadow Color property directly on Interface Builder while trying to setup .layer.shadowRadius.
So if setting label.layer.shadowRadius didn't work, please verify Shadow Color for this UILabel on Interface Builder. It should be set to default. And then, please, if you want a shadow color other than black, set this color also through .layer property.
Subclass UILabel, and override -drawInRect: