zxing库编译错误

Question

ZXPDF417Codeword *codeword = [self.detectionResultColumnsInternal[barcodeColumn] codewords][codewordsRow];

/ My Projects / in Loyal SVN / new source Inloyal / ProjectCode_Inloyal_21-May / ZBarSDK / ZXingObjC / pdf417 / decoder / ZXPDF417DetectionResult.m:144:38：读取未在类型为'NSString *的对象上找到的数组元素的预期方法“

Answer 1

将其替换为：

ZXPDF417Codeword *codeword = ((NSArray *)[self.detectionResultColumnsInternal[barcodeColumn] codewords])[codewordsRow];

我认为应该有效。