错误截图：
IndexOutOfRangeException: Array index is out of range.
ZXing.Color32Renderer.Render (ZXing.Common.BitMatrix matrix, BarcodeFormat format, System.String content, ZXing.Common.EncodingOptions options)
ZXing.BarcodeWriterGeneric`1[TOutput].Write (System.String contents)
UITest.Encode (System.String textForEncoding, Int32 width, Int32 height) (at Assets/UITest.cs:112)
UITest.CreatQRCodeImage (UnityEngine.Texture2D encoded, System.String textForEncoding) (at Assets/UITest.cs:119)
解决办法：
将要生成的二维码的图片如图设置
Texture Type:Advanced
Read/Write Enable 勾选
Format：RGBA32 bit