UIImage和Base64转化

//图片转字符串
-(NSString )UIImageToBase64Str:(UIImage ) image
{
NSData *data = UIImageJPEGRepresentation(image, 1.0f);
NSString *encodedImageStr = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];
return encodedImageStr;
}

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//字符串转图片
-(UIImage )Base64StrToUIImage:(NSString )_encodedImageStr
{
NSData *decodedImageData = [[NSData alloc] initWithBase64Encoding:_encodedImageStr];
UIImage *decodedImage = [UIImage imageWithData:_decodedImageData];
return decodedImage;
}