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
这是我发现的最简单的方法。这对我来说很有魔力。
UIView *titleSection = [[UIView alloc] initWithFrame:CGRectMake(0, 0, screenWidth, 100)];
[titleSection addSubview:titleSection];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectInset(titleSection.frame, PADDING, 0)];
[titleSection addSubview:label];
其他回答
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);
和@IBDesignable，使其与接口生成器一起工作
斯威夫特4
//
// PaddedLabel.swift
// TrainCentric
//
// Created by Arsonik
// https://stackoverflow.com/a/33244365/337934
//
import UIKit
@IBDesignable
class PaddedLabel: UILabel {
@IBInspectable var inset:CGSize = CGSize(width: 0, height: 0)
var padding: UIEdgeInsets {
var hasText:Bool = false
if let t = self.text?.count, t > 0 {
hasText = true
}
else if let t = attributedText?.length, t > 0 {
hasText = true
}
return hasText ? UIEdgeInsets(top: inset.height, left: inset.width, bottom: inset.height, right: inset.width) : UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
}
override func drawText(in rect: CGRect) {
super.drawText(in: rect.inset(by: padding))
}
override var intrinsicContentSize: CGSize {
let superContentSize = super.intrinsicContentSize
let p = padding
let width = superContentSize.width + p.left + p.right
let heigth = superContentSize.height + p.top + p.bottom
return CGSize(width: width, height: heigth)
}
override func sizeThatFits(_ size: CGSize) -> CGSize {
let superSizeThatFits = super.sizeThatFits(size)
let p = padding
let width = superSizeThatFits.width + p.left + p.right
let heigth = superSizeThatFits.height + p.top + p.bottom
return CGSize(width: width, height: heigth)
}
}
斯威夫特2
@IBDesignable
class PaddedLabel: UILabel {
@IBInspectable var inset:CGSize = CGSize(width: 0, height: 0)
var padding: UIEdgeInsets {
var hasText:Bool = false
if let t = text?.length where t > 0 {
hasText = true
}
else if let t = attributedText?.length where t > 0 {
hasText = true
}
return hasText ? UIEdgeInsets(top: inset.height, left: inset.width, bottom: inset.height, right: inset.width) : UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
}
override func drawTextInRect(rect: CGRect) {
super.drawTextInRect(UIEdgeInsetsInsetRect(rect, padding))
}
override func intrinsicContentSize() -> CGSize {
let superContentSize = super.intrinsicContentSize()
let p = padding
let width = superContentSize.width + p.left + p.right
let heigth = superContentSize.height + p.top + p.bottom
return CGSize(width: width, height: heigth)
}
override func sizeThatFits(size: CGSize) -> CGSize {
let superSizeThatFits = super.sizeThatFits(size)
let p = padding
let width = superSizeThatFits.width + p.left + p.right
let heigth = superSizeThatFits.height + p.top + p.bottom
return CGSize(width: width, height: heigth)
}
}
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
}
}
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
blyabtroi的asnwer在Swift中转换(不需要子类化)
let style: NSMutableParagraphStyle = NSParagraphStyle.defaultParagraphStyle().mutableCopy() as! NSMutableParagraphStyle
style.alignment = .Justified
style.firstLineHeadIndent = 10.0
style.headIndent = 10.0
style.tailIndent = -10.0
let attrText: NSAttributedString = NSAttributedString(string: title, attributes: [NSParagraphStyleAttributeName:style])
let label: UILabel = UILabel(frame: someFrame)
label.numberOfLines = 0
label.attributedText = attrText
推荐文章
- NSLayoutConstraints是可动画的吗?
- iOS -构建失败，CocoaPods无法找到头文件
- CFNetwork SSLHandshake iOS 9失败
- 请求失败:不可接受的内容类型:文本/html使用AFNetworking 2.0
- 缺少推荐的图标文件-该包不包含iPhone / iPod Touch的应用程序图标，像素为“120x120”，png格式
- 以编程方式创建segue
- 如何使用Xcode创建。ipa文件?
- 动态改变UILabel的字体大小
- 新的自动引用计数机制是如何工作的?
- 在iPhone上确定用户是否启用了推送通知
- 是否有可能禁用浮动头在UITableView与UITableViewStylePlain?
- 错误ITMS-9000:“冗余二进制文件上传。火车1.0版本已经有一个二进制版本上传。
- Swift -转换为绝对值
- 从父iOS访问容器视图控制器
- 自定义dealloc和ARC (Objective-C)
