i m creating an image gallery with label on top of it where the label background is opaque.i was successful in placing the text above the label.the problem is textcolor is not bright enough.my text color is white..but it lacking the brightness which is required could u guys help me out below is the code.
label=[[UILabel alloc]init];
label.frame = CGRectMake(column*248, row*175+415, 242, 70);
label.text=[story objectAtIndex:i];
label.font=[UIFont boldSystemFontOfSize:21];
label.alpha=0.5;
label.backgroundColor=[UIColor blackColor];
//label.backgroundColor=[UIColor clearColor];
label.textColor=[UIColor whiteColor];
label.textAlignment=UITextAlignmentLeft;
label.numberOfLines=2;
[view1 addSubview:label];
Your alpha value for the entire label is 0.5. This also dampens the font color. You could simply set the background of the label to a color with alpha value 0.5, the text should still be alpha 1.0 then.
label.alpha = 1.0; // is already the default
label.backgroundColor = [[UIColor blackColor] colorWithAlphaComponent:0.5];
Related
Is it possible to draw a line with different width through some cells in UITableView?
Something like this:
I'm using Xcode 4.6 and target is iOS5+
Rough idea on how it might work. You'll need to manage the red line when the reusable cell content changes.
CGSize size = [cell.textLabel.text sizeWithFont:cell.textLabel.font];
CGFloat y = cell.contentView.frame.size.height / 2;
UIView *line = [[UIView alloc] initWithFrame:CGRectMake(5,y,size.width, 3)];
line.backgroundColor = [UIColor redColor];
[cell.textLabel addSubview:line];
make some lines(like image, etc) above the tableViewCell
like [cell.contentView addSubView:$LINE_IMAGE_VIEW]
you can get the label's width like this
CGFloat width = cell.titleLabel.frame.size.width
then assign that width to custom line image.
This will strike through the whole cell. In case you need it to look like completed task:
CGSize size = cell.contentView.frame.size; // you'll draw the line in whole cell.
UIView *line = [[UIView alloc] initWithFrame:CGRectMake(15,size.height / 2,size.width - 30, 1)];
line.backgroundColor = [UIColor grayColor]; // set your preferred color
[cell addSubview:line];
You may indicate some other value in CGRectMake instead of 15 - it's offset by X. In this case you'd better then decrease width by doubled value (in my case it's 15*2 = 30) in order it look nice.
Problem:
After setting a button's titleEdgeInset and UITextAlignmentLeft the button's title is still centered, not left-aligned.
Details:
I have a button 200px wide using a custom background with an image on the left. Since I don't want the button title to cover the image, I inset the title using titleEdgeInset=UIEdgeInsetsMake(0.0, 45.0, 0.0, 0.0);. This should make title label's x position start at 45px and end at 200px. I also want the button's title to be left-aligned to the image, so I also set textAlignment = UITextAlignmentLeft. However, the title text is still centered between 45px and 200px, not left aligned.
Why?
Here's the relevant code:
button.titleEdgeInsets = UIEdgeInsetsMake(0.0, 45.0, 0.0, 0.0);
button.titleLabel.textAlignment = UITextAlignmentLeft;
[button setTitle:#"X"];
My test code:
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
button.frame = CGRectMake(20, 20, 200, 72);
UIImage *image = [UIImage imageNamed:#"rob.png"];
[button setImage:image forState:UIControlStateNormal];
button.imageEdgeInsets = UIEdgeInsetsMake(0, 10, 0, 0);
[button setTitle:#"Hello" forState:UIControlStateNormal];
button.titleEdgeInsets = UIEdgeInsetsMake(0, 20, 0, 0);
button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
[self.view addSubview:button];
Note that I set button.contentHorizontalAlignment, not button.titleLabel.textAlignment. My result:
set contentHorizontalAlignment property for button, it will work.
YourButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
Swift 4.0
YourButton.contentHorizontalAlignment = UIControlContentHorizontalAlignment.center
Put a background color on the titleLabel. I'm betting it's being sized to fit, so the text alignment won't matter. It's only as long as it needs to be. What you need to fix is the position of the label itself. You might have to extend the UIButton and override layoutSubviews to get it right. I've never seen a button with anything but a centered label.
Set contentHorizontalAlignment property for a button:
yourButton.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
Swift 3
Set contentHorizontalAlignment property do the work. Thanks
yourButton.contentHorizontalAlignment = .left
Just override the button's setter and try to set the contentHorizontalAlignment property in the setter:
-(UIButton *)yourButton {
[_yourButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft];
return _yourButton;
}
I have a scrollview with a pagecontrol, when i change her color, my pagecontrol dissapear.
UIColor *col = [UIColor colorWithRed:14.5 green:35.6 blue:72.9 alpha:1];
self.pageControl.backgroundColor = col;
The RGB values are supposed to be between 0 and 1. (See the docs). So you're setting the background color to fully opaque white here.
UIColor *col = [UIColor colorWithRed:14.5 green:35.6 blue:72.9 alpha:1];
If you have the RGB ASCII values 0 to 255
you can specify it as
UIColor *col = [UIColor colorWithRed:(255/255) green:(0/255) blue:(0/255) alpha:1]; // This represent Red color
I have created a UILabel that displays a single large character. Even with clipsToBounds = NO; I still get clipping.
See link: http://img341.imageshack.us/img341/5310/screenshot20100814at243.png
I used the following code:
CGSize fBounds = [myLabel.text sizeWithFont:cFont];
To get what should be the bounding rectangle of the font. And the label is drawn with:
myLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 280, 300)];
myLabel.clipsToBounds = NO;
myLabel.numberOfLines = 1;
myLabel.textAlignment = UITextAlignmentCenter;
myLabel.adjustsFontSizeToFitWidth = YES;
myLabel.minimumFontSize = 10;
myLabel.text = #"A";
myLabel.font = [UIFont fontWithName:#"CourierNewPSMT" size:300];
myLabel.textColor = [UIColor blackColor];
myLabel.backgroundColor = [UIColor colorWithRed:1 green:.5 blue:0 alpha:.5];
In the image below, the size returned from sizeWithFont is rendered by the semi-transparent blue rectangle overlay. As you can see, with an italic font (in this case Verdana-BoldItalic), the character extends past what sizeWithFont returns. Further, the UILabel's frame (the orange color) also clips the character. Thoughts? Maybe I could override some text drawing routine. Also, not sure if this is the same problem as here:
UIButton.titleLabel clipping text problem
Use attributed text + indent...
Looks like this is an apple problem. Ended up doing custom drawing with CoreText.
I have a UIView that I'd like to add several bits of text to. I have used a UITextView but I think that's overkill as it doesn't need to be editable. I thought about using a UILabel or a UITextField, but I don't see how you tell the superview where to position the UILabel or UITextField within itself. I want the lowest footprint object that will let me put text of a font/color/size of my choosing in my UIView where I want it. Not too much to ask, eh?
The simplest approach for you would be:
UILabel *yourLabel = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 300, 20)];
[yourLabel setTextColor:[UIColor blackColor]];
[yourLabel setBackgroundColor:[UIColor clearColor]];
[yourLabel setFont:[UIFont fontWithName: #"Trebuchet MS" size: 14.0f]];
[yourSuperView addSubview:yourLabel];
Building or populating Views in your code will probably require you to use CGRectMake a lot.
As its name says, it creates a rectangle that you can use to set the relative position (relative to the borders of your superview) and size of your UIView-Subclass (in this case a UILabel).
It works like this:
yourLabel.Frame = CGRectMake(x, y, width, height); //x,y,width,height are float values.
x defines the spacing between the left hand border of the superview and the beginning of the subview your about to add, same applies to y but relating to the spacing between top-border of your superview.
then width and height are self-explanatory i think.
Hope this gets you on the track.
Instead of finding a way to tell the view where to position the UILabel, you can tell the UILabel where to position itself in the view by using "center".
E.g.
myLabel.center = CGPointMake(0.0, 0.0);
Hope you'll be able to use UILabel, for me it's the basic form of a flexible non editable text.
For Swift:
let yourLabel = UILabel(frame: CGRectMake(100, 100, 100, 100))
yourLabel.textColor = UIColor.whiteColor()
yourLabel.backgroundColor = UIColor.blackColor()
yourLabel.text = "mylabel text"
yoursuperview.addSubview(yourLabel)
This question is old, but for a pure UIView text option without using UILabel or UITextField (as all the other answers describe, but the question is how to do it without them), drawRect in a subclassed UIView works for me. Like so:
- (void)drawRect:(CGRect)rect{
NSString *string = #"Hello World!";
[string drawAtPoint:CGPointMake(100, 100) withFont:[UIFont boldSystemFontOfSize:16.0]];
}
This routine displays a text at a X-Y position
-(void)placeText:(NSString *)theText:(int)theX:(int)theY {
UILabel *textLabel;
// Set font and calculate used space
UIFont *textFont = [UIFont fontWithName:#"Helvetica" size:14];
CGSize textStringSize = [theText sizeWithFont:textFont constrainedToSize:CGSizeMake(300,50) lineBreakMode:NSLineBreakByTruncatingTail];
// Position of the text
textLabel = [[UILabel alloc] initWithFrame:CGRectMake(theX+OFFSETIMAGEX-(textStringSize.width/2), theY+OFFSETIMAGEY-(textStringSize.height/2), textStringSize.width,textStringSize.height)];
// Set text attributes
textLabel.textColor = [UIColor blackColor];
textLabel.backgroundColor = [UIColor orangeColor];
textLabel.font = textFont;
textLabel.text = theText;
// Display text
[self.view addSubview:textLabel];
}
It might be late but here is what I use:-
CGRect labelFrame = CGRectMake(120,300, 530, 100);
UILabel *myLabel = [[UILabel alloc] initWithFrame:labelFrame];
//If you need to change the color
[myLabel setTextColor:[UIColor whiteColor]];
//If you need to change the system font
[myLabel setFont:[UIFont fontWithName:NULL size:23]];
//If you need alignment
[myLabel setTextAlignment:NSTextAlignmentCenter];
// The label will use an unlimited number of lines
[myLabel setNumberOfLines:0];
//Add label view to current view
[self.view addSubview:myLabel];
NSString *someString = #"Sample String, Yarp!";
myLabel.text = someString;
add a UILabel to your View. then override the View's layoutSubviews method.