将.TIFF映像转换为.png/.jpg flutter

Question

我有一个.TIFF格式图像，我想将其转换为.jpg或.png格式。

我使用

我已经尝试了以下代码，但会出现错误。

 var dat = file.readAsBytesSync();

        imgLib.Image image = imgLib.decodeTiff(dat)!;
        print(image.data);

E/flutter ( 7774): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: FormatException: Invalid uncompressed block header
E/flutter ( 7774): #0      Inflate._parseUncompressedBlock
package:archive/…/zlib/inflate.dart:198
E/flutter ( 7774): #1      Inflate._parseBlock
package:archive/…/zlib/inflate.dart:116
E/flutter ( 7774): #2      Inflate._inflate
package:archive/…/zlib/inflate.dart:92
E/flutter ( 7774): #3      new Inflate
package:archive/…/zlib/inflate.dart:16
E/flutter ( 7774): #4      TiffImage._decodeTile
package:image/…/tiff/tiff_image.dart:314
E/flutter ( 7774): #5      TiffImage.decode
package:image/…/tiff/tiff_image.dart:232
E/flutter ( 7774): #6      TiffDecoder.decodeImage
package:image/…/formats/tiff_decoder.dart:63
E/flutter ( 7774): #7      decodeTiff
package:image/…/formats/formats.dart:290
E/flutter ( 7774): #8      PDFTools.pdfToImages.<anonymous closure>
package:pdf_manager/Controller/Tools.dart:153
E/flutter ( 7774): <asynchronous suspension>

Answer 1

正如这个问题的回答所述（如何在Android设备上的flutter应用中显示TIFF图像？）

 /// This only accepts compressed image formats (e.g. PNG). Uncompressed
  /// formats like rawRgba (the default format of [dart:ui.Image.toByteData])
  /// will lead to exceptions.

，我认为您正在提供的TIFF文件未压缩，因此您的代码会引发异常。