图片 iOS base64编码使用

iOS下

当从h5传图片base64给原生

或者

从原生传图片的base64给h5 都需要对base64字符串做处理

- (NSString *)removeSpaceAndNewline:(NSString *)str
{    NSString *temp = [str stringByReplacingOccurrencesOfString:@" " withString:@""];
    temp = [temp stringByReplacingOccurrencesOfString:@"\r" withString:@""];
    temp = [temp stringByReplacingOccurrencesOfString:@"\n" withString:@""];    return temp;
}

// 压缩图片的方法
- (NSData *)imageWithImage:(UIImage*)image
              scaledToSize:(CGSize)newSize;
{    
UIGraphicsBeginImageContext(newSize); 
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];    
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();    
UIGraphicsEndImageContext();    
return UIImageJPEGRepresentation(newImage, 0.8);
}

- (NSString*)encodeToBase64String:(UIImage*)image {

    return [UIImagePNGRepresentation(image) base64EncodedStringWithOptions:NSDataBase64Encoding64CharacterLineLength];

}

- (UIImage*)decodeBase64ToImage:(NSString*)strEncodeData {

    NSData *data = [[NSData alloc]initWithBase64EncodedString:strEncodeData options:NSDataBase64DecodingIgnoreUnknownCharacters];

    return[UIImageimageWithData:data];

}