使TextFormField的labelText在flatter中从右向左[复制]

您有两个选择:

1.在所有设备上强制设置区域设置(和方向)

-- 方法1:

添加 flutter_localizations 打包到您的 pubspec.yml

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

MaterialApp(
  localizationsDelegates: [
    GlobalCupertinoLocalizations.delegate,
    GlobalMaterialLocalizations.delegate,
    GlobalWidgetsLocalizations.delegate,
  ],
  supportedLocales: [
    Locale("fa", "IR"), // OR Locale('ar', 'AE') OR Other RTL locales
  ],
  locale: Locale("fa", "IR") // OR Locale('ar', 'AE') OR Other RTL locales,
  .
  .
  .
);

-- 方法2: 无本地化

MaterialApp(
  .
  .
  .
  builder: (context, child) {
    return Directionality(
      textDirection: TextDirection.rtl,
      child: child,
    );
  },
  .
  .
  .
);

2.根据设备区域设置布局方向 (如果用户电话区域设置是 RTL supportedLocales RTL公司 模式,否则你的应用程序 LTR )

颤振局部化 出版规范yml

依赖项:
颤振:
sdk:颤振
sdk:颤振

然后

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

MaterialApp(
  localizationsDelegates: [
    GlobalCupertinoLocalizations.delegate,
    GlobalMaterialLocalizations.delegate,
    GlobalWidgetsLocalizations.delegate,
  ],
  supportedLocales: [
    Locale("en", "US"),
    Locale("fa", "IR"), // OR Locale('ar', 'AE') OR Other RTL locales
  ],
  .
  .
  .
);

:颤振中的rtl语言是:

[
  'ar', // Arabic
  'fa', // Farsi
  'he', // Hebrew
  'ps', // Pashto
  'ur', // Urdu
];

你需要创建一个 Builder 并使用 TextDirection.rtl

new MaterialApp(
          title: 'Flutter RTL',
          color: Colors.grey,
          builder: (BuildContext context, Widget child) {
              return new Directionality(
                textDirection: TextDirection.rtl,
                child: new Builder(
                  builder: (BuildContext context) {
                    return new MediaQuery(
                      data: MediaQuery.of(context).copyWith(
                            textScaleFactor: 1.0,
                          ),
                      child: child,
                    );
                  },
                ),
              );
            },
          .
          .
          .
        );

最好最短的方法 RTL 整个应用程序的配置 .

void main() {
  runApp(
    MaterialApp(
      home: Directionality( // add this
        textDirection: TextDirection.rtl, // set this property 
        child: HomePage(),
      ),
    ),
  );
}

textdirection 属性到 TextDirection.rtl .

TextField小部件的示例代码,

TextField(
  textDirection: TextDirection.rtl,
  decoration: InputDecoration(
    labelText: "Enter Pashto Name",
  ),
),

文本小部件的示例代码,

    Text(
      "This text is in the other direction!"
      textDirection: TextDirection.rtl,
    ),

SfRangeSelector支持通过设置 textDirection rtl 在 Directionality 小装置。

SfRangeValues _initialValues = SfRangeValues(4.0, 8.0);

@override
Widget build(BuildContext context) {
  return MaterialApp(
      home: Scaffold(
          body: Directionality(
            textDirection: TextDirection.rtl,
            child: Center(
              child: SfRangeSelector(
                min: 2.0,
                max: 10.0,
                interval: 1,
                showLabels: true,
                showTicks: true,
                initialValues: _initialValues,
                child: Container(
                    color: Colors.pink[200],
                    height: 150,
                 ),
              ),
            )
         ),
      )
  );
}

https://help.syncfusion.com/flutter/range-selector/right-to-left