반응형
UIImage와 Base64 문자열 간 변환
누구든지 a UIImage를 Base64 문자열 로 변환 한 다음 뒤집는 방법을 알고 있습니까?
아래 코드가 있습니다. 인코딩하기 전에 원본 이미지는 좋지만 인코딩하고 디코딩 한 후에 만 빈 이미지가 나타납니다.
NSData *imageData = UIImagePNGRepresentation(viewImage);
NSString *b64EncStr = [self encode: imageData];
NSString *base64String = [self encodeBase64:imageData];
빠른
먼저 이미지의 NSData가 필요합니다
//Use image name from bundle to create NSData
let image : UIImage = UIImage(named:"imageNameHere")!
//Now use image to create into NSData format
let imageData:NSData = UIImagePNGRepresentation(image)!
//OR next possibility
//Use image's path to create NSData
let url:NSURL = NSURL(string : "urlHere")!
//Now use image to create into NSData format
let imageData:NSData = NSData.init(contentsOfURL: url)!
스위프트 2.0> 인코딩
let strBase64:String = imageData.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)
스위프트 2.0> 디코딩
let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)!
스위프트 3.0> 디코딩
let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
인코딩 :
let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
print(strBase64)
디코딩 :
let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions(rawValue: 0))!
let decodedimage:UIImage = UIImage(data: dataDecoded)!
print(decodedimage)
yourImageView.image = decodedimage
스위프트 3.0
let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
let decodedimage = UIImage(data: dataDecoded)
yourImageView.image = decodedimage
목표 -C
iOS7> 버전
당신이 사용할 수있는 NSData's base64EncodedStringWithOptions
인코딩 :
- (NSString *)encodeToBase64String:(UIImage *)image {
return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}
디코딩 :
- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
return [UIImage imageWithData:data];
}
iOS 6.1 및 <버전
첫 번째 옵션 : 이 링크를 사용 encode하여 decode이미지
에 Base64 클래스를 추가 하십시오 project.
인코딩 :
NSData* data = UIImageJPEGRepresentation(yourImage, 1.0f);
NSString *strEncoded = [Base64 encode:data];
디코딩 :
NSData* data = [Base64 decode:strEncoded ];;
image.image = [UIImage imageWithData:data];
또 다른 옵션 : 사용 QSUtilities 에 대한 encoding과decoding
스위프트 4.2 확장 방법
extension UIImage {
func toBase64() -> String? {
guard let imageData = self.pngData() else { return nil }
return imageData.base64EncodedString(options: Data.Base64EncodingOptions.lineLength64Characters)
}
}
XCode 9.1 및 Swift 4.0
//
// Convert UIImage to a base64 representation
//
class func convertImageToBase64(image: UIImage) -> String {
let imageData = UIImagePNGRepresentation(image)!
return imageData.base64EncodedString(options: Data.Base64EncodingOptions.lineLength64Characters)
}
//
// Convert a base64 representation to a UIImage
//
class func convertBase64ToImage(imageString: String) -> UIImage {
let imageData = Data(base64Encoded: imageString, options: Data.Base64DecodingOptions.ignoreUnknownCharacters)!
return UIImage(data: imageData)!
}
SWIFT 3.0, XCODE 8.0
문자열을 URL로 바꾸십시오. testImage는 ImageView의 콘센트입니다.
// Put Your Image URL
let url:NSURL = NSURL(string : "http://.jpg")!
// It Will turn Into Data
let imageData : NSData = NSData.init(contentsOf: url as URL)!
// Data Will Encode into Base64
let str64 = imageData.base64EncodedData(options: .lineLength64Characters)
// Now Base64 will Decode Here
let data: NSData = NSData(base64Encoded: str64 , options: .ignoreUnknownCharacters)!
// turn Decoded String into Data
let dataImage = UIImage(data: data as Data)
// pass the data image to image View.:)
testImage.image = dataImage
희망은 감사합니다.
스위프트 iOS8
// prgm mark ----
// convert images into base64 and keep them into string
func convertImageToBase64(image: UIImage) -> String {
var imageData = UIImagePNGRepresentation(image)
let base64String = imageData.base64EncodedStringWithOptions(.allZeros)
return base64String
}// end convertImageToBase64
// prgm mark ----
// convert images into base64 and keep them into string
func convertBase64ToImage(base64String: String) -> UIImage {
let decodedData = NSData(base64EncodedString: base64String, options: NSDataBase64DecodingOptions(rawValue: 0) )
var decodedimage = UIImage(data: decodedData!)
return decodedimage!
}// end convertBase64ToImage
스위프트 3.0
이미지를 base64 문자열로 변환하려면
놀이터에서 테스트
var logo = UIImage(named: "image_logo")
let imageData:Data = UIImagePNGRepresentation(logo)
let base64String = imageData.base64EncodedString()
print(base64String)
스위프트 5
부호화
func ConvertImageToBase64String (img: UIImage) -> String {
return img.jpegData(compressionQuality: 1)?.base64EncodedString() ?? ""
}
디코딩
func ConvertBase64StringToImage (imageBase64String:String) -> UIImage {
let imageData = Data.init(base64Encoded: imageBase64String, options: .init(rawValue: 0))
let image = UIImage(data: imageData!)
return image!
}
참고 : xcode 10.2에서 테스트
스위프트 4
부호화
func ConvertImageToBase64String (img: UIImage) -> String {
let imageData:NSData = UIImageJPEGRepresentation(img, 0.50)! as NSData //UIImagePNGRepresentation(img)
let imgString = imageData.base64EncodedString(options: .init(rawValue: 0))
return imgString
}
디코딩
func ConvertBase64StringToImage (imageBase64String:String) -> UIImage {
let imageData = Data.init(base64Encoded: imageBase64String, options: .init(rawValue: 0))
let image = UIImage(data: imageData!)
return image
}
참고 : xcode 9.4.1에서 테스트
@implementation UIImage (Extended)
- (NSString *)base64String {
NSData * data = [UIImagePNGRepresentation(self) base64EncodedDataWithOptions:NSDataBase64Encoding64CharacterLineLength];
return [NSString stringWithUTF8String:[data bytes]];
}
@end
swift 2.0에서이 확장을 사용하십시오 (Jonas Franz의 신용)
extension UIImage{
func toBase64() -> String{
let imageData = UIImagePNGRepresentation(self)!
return imageData.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)
}
}
Swift 3.0 및 Xcode 8.0에서
인코딩 :
let userImage:UIImage = UIImage(named: "Your-Image_name")!
let imageData:NSData = UIImagePNGRepresentation(userImage)! as NSData
let dataImage = imageData.base64EncodedString(options: .lineLength64Characters)
디코딩 :
let imageData = dataImage
let dataDecode:NSData = NSData(base64Encoded: imageData!, options:.ignoreUnknownCharacters)!
let avatarImage:UIImage = UIImage(data: dataDecode as Data)!
yourImageView.image = avatarImage
신속한 확장 :
extension UIImage{
func toBase64() -> String{
var imageData = UIImagePNGRepresentation(self)
return imageData.base64EncodedStringWithOptions(.allZeros)
}
}
스위프트 4
enum ImageFormat {
case png
case jpeg(CGFloat)
}
extension UIImage {
func base64(format: ImageFormat) -> String? {
var imageData: Data?
switch format {
case .png: imageData = UIImagePNGRepresentation(self)
case .jpeg(let compression): imageData = UIImageJPEGRepresentation(self, compression)
}
return imageData?.base64EncodedString()
}
}
extension String {
func imageFromBase64() -> UIImage? {
guard let data = Data(base64Encoded: self) else { return nil }
return UIImage(data: data)
}
}
See my class - AppExtension.swift
// MARK: - UIImage (Base64 Encoding)
public enum ImageFormat {
case PNG
case JPEG(CGFloat)
}
extension UIImage {
public func base64(format: ImageFormat) -> String {
var imageData: NSData
switch format {
case .PNG: imageData = UIImagePNGRepresentation(self)
case .JPEG(let compression): imageData = UIImageJPEGRepresentation(self, compression)
}
return imageData.base64EncodedStringWithOptions(.allZeros)
}
}
스위프트 버전-이미지를위한 base64 생성
내 의견으로는 암묵적으로 래핑되지 않은 경우 선택 사항 UIImagePNGRepresenatation()은 안전하지 않으므로 다음과 같이 확장 프로그램을 사용하는 것이 좋습니다.
extension UIImage {
func toBase64() -> String? {
let imageData = UIImagePNGRepresentation(self)
return imageData?.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.Encoding64CharacterLineLength)
}
}
스위프트 3.0
func decodeBase64(toImage strEncodeData: String) -> UIImage {
let dataDecoded = NSData(base64Encoded: strEncodeData, options: NSData.Base64DecodingOptions.ignoreUnknownCharacters)!
let image = UIImage(data: dataDecoded as Data)
return image!
}
나는 모든 해결책을 시도했지만 아무도 나를 위해 일하지 않았다 (Swift 4 사용), 이것은 미래의 누군가가 같은 문제에 직면하면 나를 위해 일한 해결책이다.
let temp = base64String.components(separatedBy: ",")
let dataDecoded : Data = Data(base64Encoded: temp[1], options:
.ignoreUnknownCharacters)!
let decodedimage = UIImage(data: dataDecoded)
yourImage.image = decodedimage
스위프트 4.2 | Xcode 10
extension UIImage {
/// EZSE: Returns base64 string
public var base64: String {
return self.jpegData(compressionQuality: 1.0)!.base64EncodedString()
}
}
iOS 7 이상인 Objective-C의 경우 이미지 URL로 시작하여 변환하는 방법은 다음과 같습니다.
NSURL *url = [NSURL URLWithString:self.groove.thumbnailURL];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:url]];
NSString *base64String = [UIImagePNGRepresentation(image)
base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
스위프트 3.0 및 Xcode 8.0
let imageData = UIImageJPEGRepresentation(imageView.image!, 1)
let base64String = (imageData! as Data).base64EncodedString(options: NSData.Base64EncodingOptions(rawValue: 0))
print(base64String)
스위프트 5, Xcode 10.
let imageData = UIImage(named:"imagename").pngData()?.base64EncodedString(options: .lineLength64Characters)
print(imageData)스위프트 5.
class ImageConverter {
func base64ToImage(_ base64String: String) -> UIImage? {
guard let imageData = Data(base64Encoded: base64String) else { return nil }
return UIImage(data: imageData)
}
func imageToBase64(_ image: UIImage) -> String? {
return image.jpegData(compressionQuality: 1)?.base64EncodedString()
}
}
//convert Image to Base64 (Encoding)
let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
print(strBase64)
// convert Base64 to Image (Decoding)
let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions(rawValue: 0))!
let decodedimage:UIImage = UIImage(data: dataDecoded)!
print(decodedimage)
yourImageView.image = decodedimage
참고URL : https://stackoverflow.com/questions/11251340/convert-between-uiimage-and-base64-string
반응형
'Programing' 카테고리의 다른 글
| 비동기 기능의 조합 + 대기 + setTimeout (0) | 2020.05.08 |
|---|---|
| IP에서 방문자 국가를 가져 오기 (0) | 2020.05.08 |
| 터미널을 통해 OS X에서 adb에 액세스 할 수 없습니다 (“명령을 찾을 수 없음”). (0) | 2020.05.08 |
| 앱이 설치되지 않은 것으로 보여도 [INSTALL_FAILED_UPDATE_INCOMPATIBLE] 실패 (0) | 2020.05.08 |
| JQuery : 입력 필드의 변화 감지 (0) | 2020.05.08 |