Image and Text locations in UIButton - objective-c

Im trying to put a UIImage and text into a UIButton, by using UIEdgeInset to locate them.
The problem is, changing one of the edgeinset setting will cause both the image and the text to change the position.
Which means, I put the image to the correct position, then I change the titleEdgeInset values, suddenly not only the text but also the image changed the position.
Any one can help out please?

According the Apple's documentation this won't happen. Did you check to make sure you have negative insets and not positive?
The insets you specify are applied to the title rectangle after that rectangle has been sized to fit the button’s text. Thus, positive inset values may actually clip the title text.
This property is used only for positioning the title during layout.
The button does not use this property to determine
intrinsicContentSize and sizeThatFits:.

I hope this may helps you
#property (strong, nonatomic) IBOutlet UIButton *Imagetext;
NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:#"Click Me"];
NSTextAttachment *ImageAttachment = [[NSTextAttachment alloc] init];
ImageAttachment.image = [UIImage imageNamed:#"add.png"];
NSAttributedString *attributedWithImage = [NSAttributedString attributedStringWithAttachment:ImageAttachment];
[attributedString replaceCharactersInRange:NSMakeRange(6, 0) withAttributedString:attributedWithImage];
// [attributedString appendAttributedString:attributedWithImage];
[self.Imagetext setAttributedTitle:attributedString forState:UIControlStateNormal];

Related

Xcode: Position Images Inside UITextView

I have a string that is added to the UITextView, and I would like to add images after a certain world in that string.
Example:
#property (strong, nonatomic) IBOutlet UITextView *textview;
textview.text = #"This is an icon of a cat. And this is an
icon of a car. Here is more random text.";
This is an example of what I want:
How do I append and position images after a certain word?
I have an array that detects certain words:
NSArray *detectWords = #[#"cat", #"car"];
So I can detect when certain words show up in the text of a textview, but I'm not sure how to add an image right after those words.
Also, the string of words will vary in different situations (not static), so pre-positioning everything on the interface builder is not an option for me.
Thanks in advance!
Check out this library it might help you
https://github.com/dzog/ImgGlyph
Like this way, you can also do this,I hope it will help u
Here is how to put an image in the right portion of a UITextField:
UITextField *textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 10, 500, 20)];
textField.rightViewMode = UITextFieldViewModeWhileEditing;
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 15, 15)];
imageView.image = [UIImage imageNamed:#"Dog.png"];
textField.rightView = imageView;

sizeWithFont:constrainedToSize doesn't work with custom font

I'm trying to resize a UITextView to the size the text within it.
The problem is that Im using a custom font and it the text doesnt fit within the UITextView.
NSString *textToFit = #"pretty long text";
UIFont *customFont = [UIFont fontWithName:#"Museo-100" size:15];
CGSize sizeText = [textToFit sizeWithFont:customFont constrainedToSize:CGSizeMake(textFrame.size.width, 1000)];
Where textFrame is the frame of the UITextView I want to adjust its height.
Im trying different fonts and also different files of the same font and still it never adjusts its height to the height that the text fills.
I've been searching and I dont find a solution. I've tried a workaround using a UILabel and the method textRectForBounds, but still no success, something on this lines.
UILabel *auxLabel = [[UILabel alloc]init];
auxLabel.numberOfLines = 0;
auxLabel.font = [UIFont fontWithName:#"Museo-100" size:15];
auxLabel.text = //THE TEXT I WANT TO FIT IN
CGRect textSize = CGRectMake(0.0, 0.0, textDescription.frame.size.width, FLT_MAX);
CGRect frame = [auxLabel textRectForBounds:textSize limitedToNumberOfLines:0];
I think
UIView : sizeToFit
Should solve your problem.
sizeToFit Resizes and moves the receiver view so it just encloses its
subviews.
Discussion: Call this method when you want to resize the current view so that it uses the most appropriate amount of space.
Specific UIKit views resize themselves according to their own internal
needs. In some cases, if a view does not have a superview, it may size
itself to the screen bounds. Thus, if you want a given view to size
itself to its parent view, you should add it to the parent view before
calling this method.
https://developer.apple.com/library/ios/documentation/uikit/reference/uiview_class/uiview/uiview.html#//apple_ref/occ/instm/UIView/sizeToFit

How to find the position of the last text line in a multiline UILabel or otherwise have UILabel have 0 padding

I have a UILabel that has both -numberOfLines set to 3 and text-size auto shrink and I need to align another UIView to this UILabel's last line of text. That is, I might need to align to the y position of line 0, 1 or 2, depending on the text inside the label (and the distance between these lines of text may vary depending on whether the text is long enough that it triggered font resizing).
But:
UILabel doesn't expose a contentSize
the label's bounds extend past the last line of text (there seems to be a content inset), so aligning to the bounds won't work.
subclassing UILabel and doing something like this:
- (void)drawTextInRect:(CGRect)rect {
UIEdgeInsets insets = {0., 0., -30., 0.};
return [super drawTextInRect:UIEdgeInsetsInsetRect(rect, insets)];
}
just happens to work for the case where I have 3 lines and the font size was auto shrunk, but I still can'r figure out a generic way of subtracting insets for the general case, regardless of text size. And I don't seem to be able to use -boundingRectWithSize:options:context: either: it either returns a single line equivalent rect or, If I play around with the options, a a rect the same size of the original label (that is, including the extra insets I'm trying to get rid of). Mind you, the idea behind removing any insets is that if I have no way of knowing where the last line of text is, at least I can remove any insets in the label so that the last line of text aligns with the label's bounds.origin.y + bounds.size.height.
Any thoughts?
I don't know if the problem was that originally I was using boundingRectWithSize on non-attributed text or what but now this seems to work:
NSString *text = <get text from CoreData>;
NSAttributedString *attributedText = [[NSAttributedString alloc] initWithString:text attributes:#{NSFontAttributeName: self.titleLabel.font}];
CGRect rect = [attributedText boundingRectWithSize:self.titleLabel.frame.size
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
if (!rect.size.height || rect.size.height > self.titleLabel.frame.size.height) {
attributedText = [[NSAttributedString alloc] initWithString:text attributes:#{NSFontAttributeName: [UIFont boldSystemFontOfSize:self.titleLabel.font.pointSize * self.titleLabel.minimumScaleFactor]}];
rect = [attributedText boundingRectWithSize:self.titleLabel.frame.size
options:NSStringDrawingUsesLineFragmentOrigin
context:nil];
}
self.titleLabel.frame = rect;
self.titleLabel.attributedText = attributedText;
While this doesn't really find the position of the bottom of the last line of text in the UILabel (the label still adds some padding at the bottom... not sure if to account for descenders), it adjusts the label's bounds close enough to the bottom that I can at least align based on bounds.origin.y + bounds.size.height and it looks good enough.

Creating a dropshadow for UITableView

Would somebody please explain how to create a one or two pixel drop shadow ONLY on the the very last cell (in other words, I don't want a shadow around the entire tableview, just the bottom cell. An image of what I'm talking about:
Solved. Use the following code to produce a very nice, subtle shadow to the bottom of your UITableViewCell. Makes it look like it's raised slightly out of the page :)
UIView* separatorLineView = [[UIView alloc] initWithFrame:CGRectMake(3, 49, cell.frame.size.width-26, 3)];/// change size as you need.
separatorLineView.backgroundColor = shadowColor;// you can also put image here
UIBezierPath *roundedShadow = [UIBezierPath bezierPathWithRoundedRect:separatorLineView.bounds byRoundingCorners:UIRectCornerBottomLeft|UIRectCornerBottomRight cornerRadii:CGSizeMake(8.0f, 8.0f)];
CAShapeLayer *newSeparatorShape = [[CAShapeLayer alloc] init];
[newSeparatorShape setPath:roundedShadow.CGPath];
separatorLineView.layer.mask = newSeparatorShape;
[cell.contentView addSubview:separatorLineView];
Also, don't forget to put this at the top of your .m file #import <QuartzCore/QuartzCore.h>
You could, in tableView:cellForIndexPath: set the cell's background image to one that includes the rounded corners with the shadow.

UITextField -- Adding UIView for leftView - Can't get Focus

The UITextFields in my app have placeholder text defined (in Interface Builder), and I cannot cause these fields to acquire focus (i.e. show the keyboard and allow editing) when I tap on the area occupied by the placeholder text. If I tap on the textfields in an area just outside the that of placeholder text (though still within the bounds of the textfiled itself), it acts as normal (i.e. the keyboard pops up and I can edit the content of the textfield). How can I fix this?
Thanks.
EDIT 1
Ok, I think I've got it. I'm also setting a blank view to the "leftView" property of these UITextFields. If I remove this, you can touch the UITextFields in the area of the placeholder text and it reacts as expected; I need this view for the leftView though. If you change the background color of this spacer view to red, you can see that it doesn't get in the way at all, so I don't know what's going wrong.
Why does this code cause this problem?
Thanks.
+(UIView*)getTextFieldLeftSpacerViewWithBackgroundColor:(UIColor*)backgroundColor andHeight:(CGFloat)height
{
UIView *leftWrapper = [[UIView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 8.0f, height)];
leftWrapper.autoresizingMask = UIViewAutoresizingNone;
[leftWrapper setOpaque:YES];
if(backgroundColor){leftWrapper.backgroundColor = backgroundColor;}
else{leftWrapper.backgroundColor = [UIColor clearColor];}
return [leftWrapper autorelease];
}
+(void)setTextFieldLeftSpacerForTextFieled:(UITextField*)textField
{
if(textField)
{
UIView *spacer = [MYViewController getTextFieldLeftSpacerViewWithBackgroundColor:nil andHeight:textField.bounds.size.height];
textField.leftView = spacer;
textField.leftViewMode = UITextFieldViewModeAlways;
}
}
Just ran into the same problem and didn't want to subclass, just had to use :
leftWrapper.userInteractionEnabled = NO;
I abandoned this approach. Instead of using an invisible view to offset the text, I opted to subclass UITextField and provide offset CGRects for the bounds of the text within theUITextField. The following SO post was very helpful:
Indent the text in a UITextField