#18 利用 NSTextAttachment 製作包含圖片的字串

參考文章

#70 利用 NSTextAttachment 製作包含圖片的字串

主要步驟：

1. 將可愛 emoji 圖檔拖曳至 Xcode 的 Resources 資料夾下（圖檔要直接在Resources 下，不能再多一層檔案夾）
2. 把 NSMutableAttributedString 物件傳入存放所有內容的常數 content中
3. 把 NSTextAttachment 物件存入放emoji的常數中
4. 把 UIImage 圖檔存入常數
5. 設定圖片的位置、大小
6. 生成 NSAttributedString 時把把放 emoji 的常數傳入 content
7. 定義一個放文字的常數，並把UILabel傳入，設定顯示所有文字的範圍大小行數，並將 content 傳入

import UIKit
let content = NSMutableAttributedString(string: "從小會")
let BopomofoAttachment = NSTextAttachment()
BopomofoAttachment.image = UIImage(named: "Bopomofo_128x128.png")
content.append(NSAttributedString(attachment: BopomofoAttachment))
BopomofoAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "的時候最愛喝"))
let BubbleTeaAttachment = NSTextAttachment()
BubbleTeaAttachment.image = UIImage(named: "Bubble_Tea_128x128")
content.append(NSAttributedString(attachment: BubbleTeaAttachment))
BubbleTeaAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "最愛的東西是"))
let XiaolongbaoAttachment = NSTextAttachment()
XiaolongbaoAttachment.image = UIImage(named: "Xiaolongbao_128x128")
content.append(NSAttributedString(attachment: XiaolongbaoAttachment))
XiaolongbaoAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "偶爾會和出門總是拿著"))
let TricolorBagAttachment = NSTextAttachment()
TricolorBagAttachment.image = UIImage(named: "Tricolor_Bag_128x128")
content.append(NSAttributedString(attachment: TricolorBagAttachment))
TricolorBagAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "的朋友在"))
let Taipei101Attachment = NSTextAttachment()
Taipei101Attachment.image = UIImage(named: "Taipei_101_128x128")
content.append(NSAttributedString(attachment: Taipei101Attachment))
Taipei101Attachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "喝著台灣"))
let TaiwanBeerAttachment = NSTextAttachment()
TaiwanBeerAttachment.image = UIImage(named: "Taiwan_Beer_128x128")
content.append(NSAttributedString(attachment: TaiwanBeerAttachment))
TaiwanBeerAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
content.append(NSAttributedString(string: "再配著"))
let PineappleCakeAttachment = NSTextAttachment()
PineappleCakeAttachment.image = UIImage(named: "Pineapple_Cake_128x128")
content.append(NSAttributedString(attachment: PineappleCakeAttachment))
PineappleCakeAttachment.bounds = CGRect(x: 0, y: -5, width: 30, height: 30)
let label = UILabel(frame: CGRect(x: 0, y: 0, width: 200, height: 200))
label.numberOfLines = 0
label.attributedText = content