iOS：ZBar SDK unicode字符 [英] iOS: ZBar SDK unicode characters

问题描述

使用ZBar扫描QR码时，进程产生的字符串不能正确显示unicode字符。 Márti这个词由任何免费使用QR码生成器编码为QR码（如 http：/ /qrcode.kaywa.com ）会导致 Mテ.rti 。

When scanning QR codes with ZBar the string resulting from the process does not display unicode characters properly. The word Márti encoded as a QR code by any free to use QR code generator (like http://qrcode.kaywa.com) would result in Mﾃ｡rti.

在其他SO问题中（1 ， 2 ）建议在结果字符串的开头嵌入BOM，但这样做：

In other SO questions (1, 2) it was suggested to embed a BOM at the start of the resulting string, but doing this:

NSString *qrString = [NSString stringWithFormat:@"\xEF\xBB\xBF%@",symbol.data];

或者这个：

NSString *qrString = [[NSString alloc] initWithFormat:@"\357\273\277%@", symbol.data];

导致与亚洲角色相同，有缺陷的结果。 symbol.data 是由ZBar提供的结果NSString。

resulted in the same, flawed result with the Asian character. symbol.data is the resulting NSString provided by ZBar.

更新：根据dda的答案，解决方案如下：

NSString *qrString = symbol.data;
//look for misinterpreted acute characters and convert them to UTF-8
if ([qrString canBeConvertedToEncoding:NSShiftJISStringEncoding]) {
  qrString = [NSString stringWithCString:[symbol.data cStringUsingEncoding: NSShiftJISStringEncoding] encoding:NSUTF8StringEncoding];
}

推荐答案

我可以创建二维码日本语（日语）和Márti及以下图书馆：

I could create QR codes of "日本語"(japanese) and "Márti" with following libraries:

• iOS-QR-Code-Encoder


• QR-Code-Encoder-for-Objective-C 。

• iOS-QR-Code-Encoder
• QR-Code-Encoder-for-Objective-C.

您可以使用ZBar读取这些QR码。

You can read those QR codes with ZBar.

iOS-QR-Code-Encoder ：

NSString* orginalString = @"Márti"(or "日本語"(japanese));  
NSString *data = [[NSString alloc] initWithFormat:@"\357\273\277%@", orginalString];  
UIImage* qrcodeImage = [QRCodeGenerator qrImageForString:data imageSize:imageView.bounds.size.width];

QR-Code-Encoder-for-Objective-C ：

NSString* orginalString = @"Márti"(or "日本語"(japanese));
NSString *data = [[NSString alloc] initWithFormat:@"\357\273\277%@", orginalString];

//first encode the string into a matrix of bools, TRUE for black dot and FALSE for white. Let the encoder decide the error correction level and version
DataMatrix* qrMatrix = [QREncoder encodeWithECLevel:QR_ECLEVEL_AUTO version:QR_VERSION_AUTO string:data];

//then render the matrix
UIImage* qrcodeImage = [QREncoder renderDataMatrix:qrMatrix imageDimension:qrcodeImageDimension];

这篇关于iOS：ZBar SDK unicode字符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！