getFileExtension static method

String getFileExtension(
  1. FileSystemEntity file
)

Return file extension as String.

ie:- File("/../image.png") to "png"

Implementation

static String getFileExtension(FileSystemEntity file) {
  if (file is File) {
    return file.path.split("/").last.split('.').last;
  } else {
    throw "FileSystemEntity is Directory, not a File";
  }
}