我想设置一个UILabel的左插图/边距,但找不到这样做的方法。标签有一个背景集,所以仅仅改变它的原点是行不通的。这将是理想的插入文本10px左右在左手边。
当前回答
回收钢铁的答案的Swift版本+ intrinsizeContentSize()。
它支持一个更传统的设置insets为其他视图对象的insets,同时能够设置insets在接口生成器,即insets设置像这样编程:
label.insets = UIEdgeInsetsMake(0, 0, 5, 0)
如果有任何错误,请告诉我。
斯威夫特5
@IBInspectable var topInset: CGFloat = 0.0
@IBInspectable var leftInset: CGFloat = 0.0
@IBInspectable var bottomInset: CGFloat = 0.0
@IBInspectable var rightInset: CGFloat = 0.0
var insets: UIEdgeInsets {
get {
return UIEdgeInsets(top: topInset, left: leftInset, bottom: bottomInset, right: rightInset)
}
set {
topInset = newValue.top
leftInset = newValue.left
bottomInset = newValue.bottom
rightInset = newValue.right
}
}
override func drawText(in rect: CGRect) {
super.drawText(in: UIEdgeInsetsInsetRect(rect, insets))
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
var adjSize = super.sizeThatFits(size)
adjSize.width += leftInset + rightInset
adjSize.height += topInset + bottomInset
return adjSize
}
override var intrinsicContentSize: CGSize {
var contentSize = super.intrinsicContentSize
contentSize.width += leftInset + rightInset
contentSize.height += topInset + bottomInset
return contentSize
}
斯威夫特4.2
@IBDesignable class InsetLabel: UILabel {
@IBInspectable var topInset: CGFloat = 0.0
@IBInspectable var leftInset: CGFloat = 0.0
@IBInspectable var bottomInset: CGFloat = 0.0
@IBInspectable var rightInset: CGFloat = 0.0
var insets: UIEdgeInsets {
get {
return UIEdgeInsetsMake(topInset, leftInset, bottomInset, rightInset)
}
set {
topInset = newValue.top
leftInset = newValue.left
bottomInset = newValue.bottom
rightInset = newValue.right
}
}
override func drawText(in rect: CGRect) {
super.drawText(in: rect.inset(by: insets))
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
var adjSize = super.sizeThatFits(size)
adjSize.width += leftInset + rightInset
adjSize.height += topInset + bottomInset
return adjSize
}
override var intrinsicContentSize: CGSize {
var contentSize = super.intrinsicContentSize
contentSize.width += leftInset + rightInset
contentSize.height += topInset + bottomInset
return contentSize
}
}
斯威夫特3
@IBDesignable class InsetLabel: UILabel {
@IBInspectable var topInset: CGFloat = 0.0
@IBInspectable var leftInset: CGFloat = 0.0
@IBInspectable var bottomInset: CGFloat = 0.0
@IBInspectable var rightInset: CGFloat = 0.0
var insets: UIEdgeInsets {
get {
return UIEdgeInsetsMake(topInset, leftInset, bottomInset, rightInset)
}
set {
topInset = newValue.top
leftInset = newValue.left
bottomInset = newValue.bottom
rightInset = newValue.right
}
}
override func drawText(in rect: CGRect) {
super.drawText(in: UIEdgeInsetsInsetRect(rect, insets))
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
var adjSize = super.sizeThatFits(size)
adjSize.width += leftInset + rightInset
adjSize.height += topInset + bottomInset
return adjSize
}
override var intrinsicContentSize: CGSize {
var contentSize = super.intrinsicContentSize
contentSize.width += leftInset + rightInset
contentSize.height += topInset + bottomInset
return contentSize
}
}
斯威夫特2.2
@IBDesignable class InsetLabel: UILabel {
@IBInspectable var topInset: CGFloat = 0.0
@IBInspectable var leftInset: CGFloat = 0.0
@IBInspectable var bottomInset: CGFloat = 0.0
@IBInspectable var rightInset: CGFloat = 0.0
var insets: UIEdgeInsets {
get {
return UIEdgeInsetsMake(topInset, leftInset, bottomInset, rightInset)
}
set {
topInset = newValue.top
leftInset = newValue.left
bottomInset = newValue.bottom
rightInset = newValue.right
}
}
override func drawTextInRect(rect: CGRect) {
super.drawTextInRect(UIEdgeInsetsInsetRect(rect, insets))
}
override func sizeThatFits(size: CGSize) -> CGSize {
var adjSize = super.sizeThatFits(size)
adjSize.width += leftInset + rightInset
adjSize.height += topInset + bottomInset
return adjSize
}
override func intrinsicContentSize() -> CGSize {
var contentSize = super.intrinsicContentSize()
contentSize.width += leftInset + rightInset
contentSize.height += topInset + bottomInset
return contentSize
}
}
其他回答
很多答案都缺少对sizeThatFits的重写。有了这个子类,你可以创建标签,设置填充,然后输入label。sizetofit(),瞧。
import UIKit
class UILabelEx : UILabel
{
var padding : UIEdgeInsets = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
override func drawTextInRect(rect: CGRect) {
super.drawTextInRect(UIEdgeInsetsInsetRect(rect, padding))
}
override func sizeThatFits(size: CGSize) -> CGSize
{
var adjSize = super.sizeThatFits(size)
adjSize.width += padding.left + padding.right
adjSize.height += padding.top + padding.bottom
return adjSize
}
}
也许你可以试试这段代码
CGRect frame = btn.titleLabel.frame;
int indent = 20;
int inset = 20;
[btn.titleLabel setFrame:CGRectMake(frame.origin.x+inset,frame.origin.y,frame.size.width+indent,frame.size.height)];
你需要计算UILabel大小,当你放置嵌入。它可以有不同的行数,因为文本对齐,换行模式。
override func drawText(in rect: CGRect) {
let size = self.sizeThatFits(UIEdgeInsetsInsetRect(rect, insets).size);
super.drawText(in: CGRect.init(origin: CGPoint.init(x: insets.left, y: insets.top), size: size));
}
override var intrinsicContentSize: CGSize {
var size = super.intrinsicContentSize;
if text == nil || text?.count == 0 {
return size;
}
size = self.sizeThatFits(UIEdgeInsetsInsetRect(CGRect.init(origin: CGPoint.zero, size: size), insets).size);
size.width += self.insets.left + self.insets.right;
size.height += self.insets.top + self.insets.bottom;
return size;
}
尝试 iEun/InsetLabel
如果你不想使用一个额外的父视图来设置背景,你可以子类化UILabel并重写textRectForBounds: limitedtonumberolines:。我会添加一个textEdgeInsets属性或类似的,然后做
- (CGRect)textRectForBounds:(CGRect)bounds limitedToNumberOfLines:(NSInteger)numberOfLines
{
return [super textRectForBounds:UIEdgeInsetsInsetRect(bounds,textEdgeInsets) limitedToNumberOfLines:numberOfLines];
}
为了健壮性,你可能还想在setTextEdgeInsets:中调用[self setNeedsDisplay],但我通常不这么做。
我认为UILabel类没有设置边距的方法。为什么不把标签的位置设置在需要的位置?
见下面的代码:
UILabel *label = [[UILabel alloc] init];
label.text = @"This is label";
label.frame = CGRectMake(0,0,100,100);
如果来自接口构建器,则按以下方式定位Label:
yourLabel.frame = CGRectMake(0,0,100,100);
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