在UIImage和Base64字符串之间转换

  • Z时代
  • 2024-01-10
  • 分类：问答

有谁知道如何将a转换UIImage为Base64字符串，然后将其反转？

我有以下代码；编码之前的原始图像是好的，但是编码和解码后我只能得到空白图像。

NSData *imageData = UIImagePNGRepresentation(viewImage);
NSString *b64EncStr = [self encode: imageData];
NSString *base64String = [self encodeBase64:imageData];

回答：

回答：

//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)!

let strBase64:String = imageData.base64EncodedStringWithOptions(.Encoding64CharacterLineLength)

let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)!

let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!

：

let strBase64 = imageData.base64EncodedString(options: .lineLength64Characters)
print(strBase64)

：

let dataDecoded:NSData = NSData(base64EncodedString: strBase64, options: NSDataBase64DecodingOptions(rawValue: 0))!
let decodedimage:UIImage = UIImage(data: dataDecoded)!
print(decodedimage)
yourImageView.image = decodedimage

let dataDecoded : Data = Data(base64Encoded: strBase64, options: .ignoreUnknownCharacters)!
let decodedimage = UIImage(data: dataDecoded)
yourImageView.image = decodedimage

回答：

回答：

您可以使用 NSData'sbase64EncodedStringWithOptions

：

- (NSString *)encodeToBase64String:(UIImage *)image {
 return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
}

：

- (UIImage *)decodeBase64ToImage:(NSString *)strEncodeData {
  NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];
  return [UIImage imageWithData:data];
}

回答：

：使用此链接到encode和decode图像

在您的中添加Base64类project。

：

 NSData* data = UIImageJPEGRepresentation(yourImage, 1.0f);
 NSString *strEncoded = [Base64 encode:data];

：

 NSData* data = [Base64 decode:strEncoded ];;
 image.image = [UIImage imageWithData:data];

：将QSUtilities用于encoding和decoding

以上是 在UIImage和Base64字符串之间转换 的全部内容， 来源链接： utcz.com/qa/408810.html

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