blocks|key|2658291|text|针对Swift+4.1更新|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2658292|将此扩展添加到您的项目中|2658293|import+UIKit

extension+String+{
++++func+image()+->+UIImage?+{
++++++++let+size+=+CGSize(width:+40,+height:+40)
++++++++UIGraphicsBeginImageContextWithOptions(size,+false,+0)
++++++++UIColor.white.set()
++++++++let+rect+=+CGRect(origin:+.zero,+size:+size)
++++++++UIRectFill(CGRect(origin:+.zero,+size:+size))
++++++++(self+as+AnyObject).draw(in:+rect,+withAttributes:+[.font:+UIFont.systemFont(ofSize:+40)])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}
}|code-block|syntax|javascript|2658294|上面的代码将当前的String绘制到一个带有白色背景色的图像上下文中，并最终将其转换为UIImage。|offset|length|style|CODE|2658295|现在你可以写|2658296|​|2658297|📷|atomic|2658298|2658299|示例|2658300|给定指示表情符号的Unicode值的范围列表|2658301|let+ranges+=+[0x1F601...0x1F64F,+0x2702...0x27B0]|2658302|您可以将其转换为图像列表|2658303|let+images+=+ranges
++++.flatMap+{+$0+}
++++.compactMap+{+Unicode.Scalar($0)+}
++++.map(Character.init)
++++.compactMap+{+String($0).image()+}|2658304|结果：|2658305|2658306|2658307|2658308|2658309|我不能保证范围列表是完整的，您需要自己搜索它|blockquote|2658310|2658311|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/877bf8966236f17140078b8a9b9e8aff.png|imageAlt|1|https://ask.qcloudimg.com/http-save/yehe-900000/ec0c2998e23db0248a117511523645d1.png^0|0|0|0|9|6|17|7|0|0|0|0|1|0|0|0|0|0|0|0|0|0|0|0|1|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1S|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|1T|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|1U|8|@$K|1V|L|1W|M|N]|$K|1X|L|1Y|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|1Z|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|20|8|@]|9|@]|A|$]]|$1|S|3|T|5|U|7|21|8|@]|9|@$K|22|L|23|1|24]]|A|$]]|$1|V|3|R|5|6|7|25|8|@]|9|@]|A|$]]|$1|W|3|X|5|6|7|26|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|27|8|@]|9|@]|A|$]]|$1|10|3|11|5|F|7|28|8|@]|9|@]|A|$G|H]]|$1|12|3|13|5|6|7|29|8|@]|9|@]|A|$]]|$1|14|3|15|5|F|7|2A|8|@]|9|@]|A|$G|H]]|$1|16|3|17|5|6|7|2B|8|@]|9|@]|A|$]]|$1|18|3|R|5|6|7|2C|8|@]|9|@]|A|$]]|$1|19|3|T|5|U|7|2D|8|@]|9|@$K|2E|L|2F|1|2G]]|A|$]]|$1|1A|3|R|5|6|7|2H|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|2I|8|@]|9|@]|A|$]]|$1|1C|3|1D|5|1E|7|2J|8|@]|9|@]|A|$]]|$1|1F|3|-4|5|6|7|2K|8|@]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|2L|8|@]|9|@]|A|$]]]|1H|$1I|$5|1J|1K|1L|A|$1M|1N|1O|-4]]|1P|$5|1J|1K|1L|A|$1M|1Q|1O|-4]]]]

<h2>Updated for Swift 4.1</h2>

Add this extension to your project

<pre><code>import UIKit

extension String {
 func image() -&gt; UIImage? {
 let size = CGSize(width: 40, height: 40)
 UIGraphicsBeginImageContextWithOptions(size, false, 0)
 UIColor.white.set()
 let rect = CGRect(origin: .zero, size: size)
 UIRectFill(CGRect(origin: .zero, size: size))
 (self as AnyObject).draw(in: rect, withAttributes: [.font: UIFont.systemFont(ofSize: 40)])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }
}
</code></pre>

The code above draws the current <code>String</code> to an Image Context with a white background color and finally transform it into a <code>UIImage</code>. 

Now you can write

<a href="https://i.stack.imgur.com/bye30.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bye30.png" alt="enter image description here"></a>

<h2>Example</h2>

Given a list of ranges indicating the unicode values of the emoji symbols

<pre><code>let ranges = [0x1F601...0x1F64F, 0x2702...0x27B0]
</code></pre>

you can transform it into a list of images

<pre><code>let images = ranges
 .flatMap { $0 }
 .compactMap { Unicode.Scalar($0) }
 .map(Character.init)
 .compactMap { String($0).image() }
</code></pre>

Result:

<a href="https://i.stack.imgur.com/W4FKk.png" rel="noreferrer"><img src="https://i.stack.imgur.com/W4FKk.png" alt="enter image description here"></a>

<blockquote>
 I cannot guarantee the list of ranges is complete, you'll need to search for it by yourself 
</blockquote>

blocks|key|2869523|text|更新了@Luca+Angeletti对Swift+3.0.1的回答|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2869524|extension+String+{

++++func+image()+->+UIImage?+{
++++++++let+size+=+CGSize(width:+30,+height:+35)
++++++++UIGraphicsBeginImageContextWithOptions(size,+false,+0);
++++++++UIColor.white.set()
++++++++let+rect+=+CGRect(origin:+CGPoint(),+size:+size)
++++++++UIRectFill(CGRect(origin:+CGPoint(),+size:+size))
++++++++(self+as+NSString).draw(in:+rect,+withAttributes:+[NSFontAttributeName:+UIFont.systemFont(ofSize:+30)])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}

}|code-block|syntax|javascript|2869525|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Updated @Luca Angeletti answer for Swift 3.0.1

<pre><code>extension String {

 func image() -&gt; UIImage? {
 let size = CGSize(width: 30, height: 35)
 UIGraphicsBeginImageContextWithOptions(size, false, 0);
 UIColor.white.set()
 let rect = CGRect(origin: CGPoint(), size: size)
 UIRectFill(CGRect(origin: CGPoint(), size: size))
 (self as NSString).draw(in: rect, withAttributes: [NSFontAttributeName: UIFont.systemFont(ofSize: 30)])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }

}
</code></pre>

blocks|key|114082|text|Swift+4也是这样：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|114083|extension+String+{
++++func+emojiToImage()+->+UIImage?+{
++++++++let+size+=+CGSize(width:+30,+height:+35)
++++++++UIGraphicsBeginImageContextWithOptions(size,+false,+0)
++++++++UIColor.white.set()
++++++++let+rect+=+CGRect(origin:+CGPoint(),+size:+size)
++++++++UIRectFill(rect)
++++++++(self+as+NSString).draw(in:+rect,+withAttributes:+[NSAttributedStringKey.font:+UIFont.systemFont(ofSize:+30)])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}
}|code-block|syntax|javascript|114084|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Same thing for Swift 4:

<pre><code>extension String {
 func emojiToImage() -&gt; UIImage? {
 let size = CGSize(width: 30, height: 35)
 UIGraphicsBeginImageContextWithOptions(size, false, 0)
 UIColor.white.set()
 let rect = CGRect(origin: CGPoint(), size: size)
 UIRectFill(rect)
 (self as NSString).draw(in: rect, withAttributes: [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 30)])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }
}
</code></pre>

blocks|key|2869568|text|Swift+4.2|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2869569|我真的很喜欢@Luca+Angeletti解决方案。关于透明背景，我有一个和@jonauz相同的问题。因此，通过这个小的修改，你可以得到相同的东西，但具有清晰的背景颜色。|2869570|我没有在评论中回答的代表。|2869571|import+UIKit

extension+String+{
++++func+emojiToImage()+->+UIImage?+{
++++++++let+size+=+CGSize(width:+30,+height:+35)
++++++++UIGraphicsBeginImageContextWithOptions(size,+false,+0)
++++++++UIColor.clear.set()
++++++++let+rect+=+CGRect(origin:+CGPoint(),+size:+size)
++++++++UIRectFill(CGRect(origin:+CGPoint(),+size:+size))
++++++++(self+as+NSString).draw(in:+rect,+withAttributes:+[NSAttributedString.Key.font:+UIFont.systemFont(ofSize:+30)])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}
}|code-block|syntax|javascript|2869572|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|P|8|@]|9|@]|A|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<h1>Swift 4.2</h1>
I really liked @Luca Angeletti solution. I hade the same question as @jonauz about transparent background. So with this small modification you get the same thing but with clear background color.
I didn't have the rep to answer in a comment.
<pre><code>import UIKit

extension String {
 func emojiToImage() -&gt; UIImage? {
 let size = CGSize(width: 30, height: 35)
 UIGraphicsBeginImageContextWithOptions(size, false, 0)
 UIColor.clear.set()
 let rect = CGRect(origin: CGPoint(), size: size)
 UIRectFill(CGRect(origin: CGPoint(), size: size))
 (self as NSString).draw(in: rect, withAttributes: [NSAttributedString.Key.font: UIFont.systemFont(ofSize: 30)])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }
}
</code></pre>

blocks|key|114111|text|以下是更新后的答案，并做了以下更改：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|114112|114113|Centered：在生成的UIImage|unordered-list-item|offset|length|style|BOLD|114114|Correct+size+中将文本居中使用了draw(at:withAttributes:)而不是draw(in:withAttributes:)：为了获得与understanding|CODE|114115|的实际大小相关的结果UIImage，使用了添加了更好的注释|114116|Swift+5|114117|import+UIKit
extension+String+{
++++func+textToImage()+->+UIImage?+{
++++++++let+nsString+=+(self+as+NSString)
++++++++let+font+=+UIFont.systemFont(ofSize:+1024)+//+you+can+change+your+font+size+here
++++++++let+stringAttributes+=+[NSAttributedString.Key.font:+font]
++++++++let+imageSize+=+nsString.size(withAttributes:+stringAttributes)

++++++++UIGraphicsBeginImageContextWithOptions(imageSize,+false,+0)+//++begin+image+context
++++++++UIColor.clear.set()+//+clear+background
++++++++UIRectFill(CGRect(origin:+CGPoint(),+size:+imageSize))+//+set+rect+size
++++++++nsString.draw(at:+CGPoint.zero,+withAttributes:+stringAttributes)+//+draw+text+within+rect
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()+//+create+image+from+context
++++++++UIGraphicsEndImageContext()+//++end+image+context

++++++++return+image+??+UIImage()
++++}
}|code-block|syntax|javascript|114118|Swift+3.2|114119|import+UIKit
extension+String+{
++++func+textToImage()+->+UIImage?+{
++++++++let+nsString+=+(self+as+NSString)
++++++++let+font+=+UIFont.systemFont(ofSize:+1024)+//+you+can+change+your+font+size+here
++++++++let+stringAttributes+=+[NSFontAttributeName:+font]
++++++++let+imageSize+=+nsString.size(attributes:+stringAttributes)

++++++++UIGraphicsBeginImageContextWithOptions(imageSize,+false,+0)+//++begin+image+context
++++++++UIColor.clear.set()+//+clear+background
++++++++UIRectFill(CGRect(origin:+CGPoint(),+size:+imageSize))+//+set+rect+size
++++++++nsString.draw(at:+CGPoint.zero,+withAttributes:+stringAttributes)+//+draw+text+within+rect
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()+//+create+image+from+context
++++++++UIGraphicsEndImageContext()+//++end+image+context

++++++++return+image+??+UIImage()
++++}
}|114120|entityMap|0|LINK|mutability|MUTABLE|url|https://developer.apple.com/documentation/foundation/nsstring/1533109-draw|1|https://developer.apple.com/documentation/foundation/nsstring/1529855-draw^0|0|0|0|8|0|0|D|M|O|1D|O|M|O|0|1D|O|1|0|0|0|5|0|0|0|5|0|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1A|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1B|8|@$F|1C|G|1D|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|1E|8|@$F|1F|G|1G|H|I]|$F|1H|G|1I|H|L]|$F|1J|G|1K|H|L]]|9|@$F|1L|G|1M|1|1N]|$F|1O|G|1P|1|1Q]]|A|$]]|$1|M|3|N|5|6|7|1R|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1S|8|@$F|1T|G|1U|H|I]]|9|@]|A|$]]|$1|Q|3|R|5|S|7|1V|8|@]|9|@]|A|$T|U]]|$1|V|3|W|5|6|7|1W|8|@$F|1X|G|1Y|H|I]]|9|@]|A|$]]|$1|X|3|Y|5|S|7|1Z|8|@]|9|@]|A|$T|U]]|$1|Z|3|-4|5|6|7|20|8|@]|9|@]|A|$]]]|10|$11|$5|12|13|14|A|$15|16]]|17|$5|12|13|14|A|$15|18]]]]

Here's an updated answer with the following changes:
<ul>
<li>Centered: Used <a href="https://developer.apple.com/documentation/foundation/nsstring/1533109-draw" rel="noreferrer"><code>draw(at:withAttributes:)</code></a> instead of <a href="https://developer.apple.com/documentation/foundation/nsstring/1529855-draw" rel="noreferrer"><code>draw(in:withAttributes:)</code></a> for centering the text within the resulting UIImage</li>
<li>Correct Size: Used <a href="https://developer.apple.com/documentation/foundation/nsstring/1531844-size" rel="noreferrer"><code>size(withAttributes:)</code></a> for having a resulting UIImage of size that correlates to the actual size of the font.</li>
<li>Comments: Added comments for better understanding</li>
</ul>
Swift 5
<pre><code>import UIKit
extension String {
 func textToImage() -&gt; UIImage? {
 let nsString = (self as NSString)
 let font = UIFont.systemFont(ofSize: 1024) // you can change your font size here
 let stringAttributes = [NSAttributedString.Key.font: font]
 let imageSize = nsString.size(withAttributes: stringAttributes)

 UIGraphicsBeginImageContextWithOptions(imageSize, false, 0) // begin image context
 UIColor.clear.set() // clear background
 UIRectFill(CGRect(origin: CGPoint(), size: imageSize)) // set rect size
 nsString.draw(at: CGPoint.zero, withAttributes: stringAttributes) // draw text within rect
 let image = UIGraphicsGetImageFromCurrentImageContext() // create image from context
 UIGraphicsEndImageContext() // end image context

 return image ?? UIImage()
 }
}
</code></pre>
Swift 3.2
<pre><code>import UIKit
extension String {
 func textToImage() -&gt; UIImage? {
 let nsString = (self as NSString)
 let font = UIFont.systemFont(ofSize: 1024) // you can change your font size here
 let stringAttributes = [NSFontAttributeName: font]
 let imageSize = nsString.size(attributes: stringAttributes)

 UIGraphicsBeginImageContextWithOptions(imageSize, false, 0) // begin image context
 UIColor.clear.set() // clear background
 UIRectFill(CGRect(origin: CGPoint(), size: imageSize)) // set rect size
 nsString.draw(at: CGPoint.zero, withAttributes: stringAttributes) // draw text within rect
 let image = UIGraphicsGetImageFromCurrentImageContext() // create image from context
 UIGraphicsEndImageContext() // end image context

 return image ?? UIImage()
 }
}
</code></pre>

blocks|key|2658425|text|使用UIGraphicsImageRenderer的@Luca+Angeletti答案的更新版本|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2658426|extension+String+{
++++func+image()+->+UIImage?+{
++++++++let+size+=+CGSize(width:+100,+height:+100)
++++++++let+rect+=+CGRect(origin:+CGPoint(),+size:+size)
++++++++return+UIGraphicsImageRenderer(size:+size).image+{+(context)+in
++++++++++++(self+as+NSString).draw(in:+rect,+withAttributes:+[.font+:+UIFont.systemFont(ofSize:+100)])
++++++++}
++++}
}|code-block|syntax|javascript|2658427|entityMap^0|2|N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Updated version of @Luca Angeletti's answer using <code>UIGraphicsImageRenderer</code>:

<pre><code>extension String {
 func image() -&gt; UIImage? {
 let size = CGSize(width: 100, height: 100)
 let rect = CGRect(origin: CGPoint(), size: size)
 return UIGraphicsImageRenderer(size: size).image { (context) in
 (self as NSString).draw(in: rect, withAttributes: [.font : UIFont.systemFont(ofSize: 100)])
 }
 }
}
</code></pre>

blocks|key|2869629|text|此变化基于@Luca's+accepted，但允许您有选择地自定义字体的磅大小，应导致居中图像，并且不会使背景颜色变为白色。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2869630|extension+String+{
++++func+image(pointSize:+CGFloat+=+UIFont.systemFontSize)+->+UIImage?+{
++++++++let+nsString+=+self+as+NSString
++++++++let+font+=+UIFont.systemFont(ofSize:+pointSize)

++++++++let+size+=+nsString.size(withAttributes:+[.font:+font])
++++++++UIGraphicsBeginImageContextWithOptions(size,+false,+0)
++++++++let+rect+=+CGRect(origin:+.zero,+size:+size)
++++++++nsString.draw(in:+rect,+withAttributes:+[.font:+font])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}
}|code-block|syntax|javascript|2869631|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/38809531/2985369^0|5|7|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

This variation is based on <a href="https://stackoverflow.com/a/38809531/2985369">@Luca's</a> accepted answer, but allows you to optionally customize the point size of the font, should result in a centered image, and doesn't make the background color white.

<pre class="lang-swift prettyprint-override"><code>extension String {
 func image(pointSize: CGFloat = UIFont.systemFontSize) -&gt; UIImage? {
 let nsString = self as NSString
 let font = UIFont.systemFont(ofSize: pointSize)

 let size = nsString.size(withAttributes: [.font: font])
 UIGraphicsBeginImageContextWithOptions(size, false, 0)
 let rect = CGRect(origin: .zero, size: size)
 nsString.draw(in: rect, withAttributes: [.font: font])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }
}
</code></pre>

blocks|key|111803|text|Swift+5：(带可选的fontSize、imageSize和bgColor)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|111804|像这样使用它：|111805|let+image++++++=+"".image()
let+imageLarge+=+"".image(fontSize:100)
let+imageBlack+=+"".image(fontSize:100,+bgColor:.black)
let+imageLong++=+"".image(fontSize:100,+imageSize:CGSize(width:500,height:100))|code-block|syntax|javascript|111806|import+UIKit

extension+String
{
++++func+image(fontSize:CGFloat+=+40,+bgColor:UIColor+=+UIColor.clear,+imageSize:CGSize?+=+nil)+->+UIImage?
++++{
++++++++let+font+=+UIFont.systemFont(ofSize:+fontSize)
++++++++let+attributes+=+[NSAttributedString.Key.font:+font]
++++++++let+imageSize+=+imageSize+??+self.size(withAttributes:+attributes)

++++++++UIGraphicsBeginImageContextWithOptions(imageSize,+false,+0)
++++++++bgColor.set()
++++++++let+rect+=+CGRect(origin:+.zero,+size:+imageSize)
++++++++UIRectFill(rect)
++++++++self.draw(in:+rect,+withAttributes:+[.font:+font])
++++++++let+image+=+UIGraphicsGetImageFromCurrentImageContext()
++++++++UIGraphicsEndImageContext()
++++++++return+image
++++}
}|111807|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Swift 5: ( with optional fontSize, imageSize and bgColor)

use it like this: 

<pre><code>let image = "".image()
let imageLarge = "".image(fontSize:100)
let imageBlack = "".image(fontSize:100, bgColor:.black)
let imageLong = "".image(fontSize:100, imageSize:CGSize(width:500,height:100))
</code></pre>

<pre><code>
import UIKit

extension String
{
 func image(fontSize:CGFloat = 40, bgColor:UIColor = UIColor.clear, imageSize:CGSize? = nil) -&gt; UIImage?
 {
 let font = UIFont.systemFont(ofSize: fontSize)
 let attributes = [NSAttributedString.Key.font: font]
 let imageSize = imageSize ?? self.size(withAttributes: attributes)

 UIGraphicsBeginImageContextWithOptions(imageSize, false, 0)
 bgColor.set()
 let rect = CGRect(origin: .zero, size: imageSize)
 UIRectFill(rect)
 self.draw(in: rect, withAttributes: [.font: font])
 let image = UIGraphicsGetImageFromCurrentImageContext()
 UIGraphicsEndImageContext()
 return image
 }
}
</code></pre>

I need all Apple Emojis. I can get all the emojis and put them into a String by copying them from the site <a href="http://getemoji.com" rel="noreferrer">getemoji</a> but in my app i need the emojis in the right order as images. 
Is there a nice way to convert the emojis I copy into a String to a UIImage? 
Or a better solution to get all the Apple emojis in the right order?

Convert Apple Emoji (String) to UIImage

Swift

我需要所有的苹果表情符号。我可以得到所有的表情符号，并把它们放在一个字符串中，从网站的复制它们，但在我的应用程序中，我需要正确的顺序的表情符号作为图像。有没有一种很好的方法可以把我复制的表情符号转换成字符串或者UIImage或者一个更好的解决方案，让所有的苹果表情符号按正确的顺序排列？

问将Apple Emoji (字符串)转换为UIImage
EN

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问将Apple Emoji (字符串)转换为UIImage
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