flutter移动文件

/*
  * 移动文件
  * */
  removeFile(File sourceFile, String newPath) async {
    try {
      // prefer using rename as it is probably faster
      return await sourceFile.rename(newPath);
    } on FileSystemException catch (e) {
      // if rename fails, copy the source file and then delete it
      final newFile = await sourceFile.copy(newPath);
      await sourceFile.delete();
      return newFile;
    }
  }