图片字符串互相转换

//图片转字符串

- (NSString *)UIImageToBase64Str:(UIImage *) image

{

    NSData *data = UIImageJPEGRepresentation(image, 1.0f);

    NSString *encodedImageStr = [data base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

    return encodedImageStr;

}

//字符串转图片

- (UIImage *)Base64StrToUIImage:(NSString *)_encodedImageStr

{

    NSData *_decodedImageData = [[NSData alloc] initWithBase64Encoding:_encodedImageStr];

    UIImage *_decodedImage = [UIImage imageWithData:_decodedImageData];

    return _decodedImage;

}