ZXing无法写入png输出

时间:2018-02-16 18:13:29

标签: objective-c zxing

我从未遇到过这个问题,3个月前我能够使用相同的代码。更新到macOS High Sierra后,我无法使用ZXing库运行此代码。不确定它是否已链接,但我在这里有:

错误:

IIOImageWriteSession:113: cannot create: '/Users/****/Desktop/test.PNG.sb-8ff9679f-SRYKGg'
     error = 1 (Operation not permitted)

代码:

NSError * error = nil;
ZXMultiFormatWriter * writer = [ZXMultiFormatWriter writer];
ZXBitMatrix* result = [writer encode:@"AM233X05987"
                              format:kBarcodeFormatDataMatrix
                               width:500
                              height:500
                               error:&error];

if (result) {
    CGImageRef image = [[ZXImage imageWithMatrix:result] cgimage];

    CFURLRef url = (__bridge CFURLRef)[NSURL fileURLWithPath:@"/Users/****/Desktop/test.PNG"];

    CGImageDestinationRef destination = CGImageDestinationCreateWithURL(url, kUTTypePNG, 1, NULL);

    if (!destination) {
        NSLog(@"Failed to create CGImageDestination" );
        return NO;
    }

    CGImageDestinationAddImage(destination, image, nil);

    if (!CGImageDestinationFinalize(destination)) {
        NSLog(@"Failed to write image to /Users/alex/Desktop/Barcodes/");
        CFRelease(destination);
        return NO;
    }

    CFRelease(destination);

} else {
    NSString * errorMessage = [error localizedDescription];
    NSLog(@"%@", errorMessage);
}

1 个答案:

答案 0 :(得分:0)

终于找到了问题的根源,事实证明这是因为App是Sandboxed。关闭Sandbox解决了这个问题。

要通过Sandbox ON获得此功能,解决方案是设置“保存”面板,如果返回“确定”,则将文件保存到“保存”面板的URL。