In this recipe, we demonstrate the three most important ways to write to a file. You can find the code in the project writing_files.
The three ways to write to a file are discussed as follows:
First, we import the packages
ioandconvertas shown in the following code:import 'dart:io'; import 'dart:convert'; void main() {We can write to a file using
writeAsStringas shown in the following code:final filename = 'outString.txt'; new File(filename).writeAsString('Dart is an elegant language').then((File file) { // do something with the file. });We can write to a file using
writeAsBytesas shown in the following code:final string = '你好世界'; // Encode to UTF8. var encodedData = UTF8.encode(string); new File('outUTF8.txt').writeAsBytes(encodedData).then((file) => file.readAsBytes()).then((data) { // Decode to a string, and print. print(data); // [228, 189, 160, 229, 165, 189, 228, 184, 150, 231, 149, 140] print(UTF8.decode(data)); // prints...