Results 2 issues of Wendy

下载项目运行正常后,拍照和视频都打不开.

Thanks for your code ! I need your help as follows: `String controlNr1String = dataInPrint.substring(indexOfFirstSeparationMark1 + 1, indexOfSecondSeparationMark2); String controlNr2String = dataInPrint.substring(indexOfFirstSeparationMark1 + 1, indexOfSecondSeparationMark2); ` What does "controlNr1String" and...