setTemplate method

@override Future<void> setTemplate(String filePath)

setTemplate(String) takes a file path (i.e. 'assets/MyTemplate.BWT' or 'assets/MyImage.PNG') as a string representing a template file or image.

This method sets the current template or image being acted upon when setPlaceholderValue(String, String) or print() is called. Therefore, calling setTemplate(String) again will override any previous template that has been set.

Implementation

@override
Future<void> setTemplate(String filePath) async {
  String? fileExtension = filePath.split(".").lastOrNull;
  if (fileExtension != null) {
    final fileData = await rootBundle.load(filePath);
    final bytes = fileData.buffer.asUint8List();
    final byteData = base64.encode(bytes);
    var sendMap = <String, dynamic>{
      "byteData": byteData,
      "fileExtension": fileExtension
    };
    return await methodChannel.invokeMethod<dynamic>('setTemplate', sendMap);
  } else {
    throw PlatformException(
        code: "",
        message: "SdkApiException.TemplateNotLoadedException",
        details: "Invalid file name. Must include a file extension.");
  }
}