Ios 在Swift中将UIView转换为.png

如何将UIView转换为图像。我发现了这个，但我对Objective-C不太熟悉。我试着把它翻译成Swift，但效果不太好。能帮忙吗

UIGraphicsBeginImageContext(myView.frame.size);
[myView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *data=UIImagePNGRepresentation(viewImage);
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *strPath = [documentsDirectory stringByAppendingPathComponent:@"myimage.png"];
[data writeToFile:strPath atomically:YES];

试试这个：

UIGraphicsBeginImageContextWithOptions(myView.layer.frame.size, false, scale)
myView.layer.renderInContext(UIGraphicsGetCurrentContext()!)
let viewImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
let data = UIImagePNGRepresentation(viewImage)
let documentsDir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
let writePath = documentsDir.stringByAppendingPathComponent("myimage.png")
data.writeToFile(writePath, atomically:true)

试试这个：

UIGraphicsBeginImageContextWithOptions(myView.layer.frame.size, false, scale)
myView.layer.renderInContext(UIGraphicsGetCurrentContext()!)
let viewImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
let data = UIImagePNGRepresentation(viewImage)
let documentsDir = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)[0] as! String
let writePath = documentsDir.stringByAppendingPathComponent("myimage.png")
data.writeToFile(writePath, atomically:true)