if (file != null) { title = file.name; content = await file.readAsString(); setState((){}); } else { BotToast.showText(text: '打开了个寂寞🙄'); } 存储文本文件存储文本需要用到 XFile 对象中的 fromData 方法。让我们来看看这个方法中需要传入什么参数:...
void editFile() async { String dir = (await getApplicationDocumentsDirectory()).path; // 获取文档目录 File file = await File('$dir/counter.txt'); //获得文件对象 String content = await file.readAsString(); // 读取文件内容 content = content + "新内容"; file.writeAsString(content); /...
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 新建一个dart文件file_manager.dart 这里需要使用到一个插件path_provider用来获取SD卡根路径(不嫌麻烦自己写原生也可以),在pubspec.yaml文件里添加相关依赖即可path_provider: ^0.4.1。 然后在初始化函数使用String sDCardDir = (await ...
String data = file.readAsStringSync(); log("readData from files $data"); } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 2. getTemporyDirectory() 在Android中是 /data/data/packagename/cache/目录,相当于调用getCacheDir()方法,在iOS中调用 NSCachesDirectory,这...
title:'Read/Write Files', home: MyApp(storage: TextStorage()), ), ); } classTextStorage { Future<String> get _localPath async { final directory=await getApplicationDocumentsDirectory(); returndirectory.path; } Future<File> get _localFile async { ...
This snippet, taken fromexample directory, is a script written as an appium client withwebdriverio, and assumes you haveappiumserver (withappium-flutter-driverinstalled) running on the same host and default port (4723). For more info, see example'sREADME.md ...
可以看出:file.readAsString()返回的是:Future<String>, Future.png 代码语言:javascript 复制 main(){varfile=File(r"C:\Users\Administrator\Desktop\应龙.txt");Future<String>re=file.readAsString();re.then((result){print(result);});print("我是第几?");} ...
create a json/.env file for your environmental variables, for my case I have a.staging.jsonfile in my project directory run the following command flutter build ipa --flavor staging --export-method=ad-hoc --dart-define-from-file=.staging.json ...
Cached Network Image [2431⭐] - Show images from the internet and keep them in the cache directory by Lottie [1157⭐] - Use airbnb's popular After Effects Animation library by xvrh Bitmap [175⭐] - Perform Bitmap manipulations (such as contrast and exposure) with a help from the ...
flutter_application_path='flutter_project_dir'#读取 podhelper.rb 的Ruby代码在当前目录执行eval(File.read(File.join(flutter_application_path,'.ios','Flutter','podhelper.rb')),binding) 2 添加Run script 脚本 代码语言:javascript 复制 "$FLUTTER_ROOT/packages/flutter_tools/bin/xcode_backend.sh"build...