FlutterIOs全能編程開發工程師指南

一、FlutterIOs打包

1、FlutterIOs是一款跨平台開發框架，支持一次編寫，多平台運行

2、在FlutterIOs開發完成後，需要對應用進行打包

3、執行以下命令進行打包:

 flutter build ios --release --no-codesign

該命令會在FlutterIos項目的build/ios下生成Runner.xcarchive文件，即為我們需要的打包文件。

二、FlutterIOs應用上架

1、在成功打包之後，我們需要將應用上傳到App Store進行上架

2、首先需要在App Store Connect中創建應用信息

3、通過Xcode將Runner.xcarchive文件上傳到App Store Connect中的應用信息中，進行審核和上架

三、FlutterIOs開發

1、FlutterIOs擁有豐富的UI組件庫，開發者可以通過調用這些組件來實現應用的不同布局

2、FlutterIOs支持響應式編程，可以根據不同設備的大小自適應界面

3、FlutterIOs的開發語言為Dart，可以使用熟悉的OOP思維進行編程

4、示例代碼：

  import 'package:flutter/material.dart';
  
  class MyApp extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
        ),
        home: MyHomePage(title: 'Flutter Demo Home Page'),
      );
    }
  }
  
  class MyHomePage extends StatefulWidget {
    MyHomePage({Key key, this.title}) : super(key: key);
  
    final String title;
  
    @override
    _MyHomePageState createState() => _MyHomePageState();
  }
  
  class _MyHomePageState extends State {
    int _counter = 0;
  
    void _incrementCounter() {
      setState(() {
        _counter++;
      });
    }
  
    @override
    Widget build(BuildContext context) {
      return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text(
                'You have pushed the button this many times:',
              ),
              Text(
                '$_counter',
                style: Theme.of(context).textTheme.headline4,
              ),
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: _incrementCounter,
          tooltip: 'Increment',
          child: Icon(Icons.add),
        ),
      );
    }
  }

四、FlutterIOs音量不能調節媒體選取

1、FlutterIOs在調用媒體選取的時候，無法調節音量大小

2、需要將FlutterIOs項目中iOS目錄的Info.plist文件，增加如下字段:

  UIUserInterfaceStyle
  Light
  NSMicrophoneUsageDescription
  Allow access to microphone to record audio
  NSPhotoLibraryUsageDescription
  Allow access to photo library to select images and videos
  NSCameraUsageDescription
  Allow access to camera to take photos and videos
  NSAppleMusicUsageDescription
  Allow access to Apple Music to select songs for image/video
  NSMotionUsageDescription
  Allow access to motion and fitness to calculate health information
  NSBluetoothAlwaysUsageDescription
  Allow access to bluetooth
  NSBluetoothPeripheralUsageDescription
  Allow access to bluetooth
  UIBackgroundModes
  
      fetch
      remote-notification
      audio
      voip
      processing
      bluetooth-central
      bluetooth-peripheral
      background-fetch
      location
  
  io.flutter.embedded_views_preview
  

3、示例代碼如下：

  
      CFBundleDevelopmentRegion
      $(DEVELOPMENT_LANGUAGE)
      CFBundleExecutable
      $(EXECUTABLE_NAME)
      CFBundleIdentifier
      $(PRODUCT_BUNDLE_IDENTIFIER)
      CFBundleInfoDictionaryVersion
      6.0
      CFBundleName
      $(PRODUCT_NAME)
      CFBundlePackageType
      FMWK
      CFBundleShortVersionString
      1.0
      CFBundleVersion
      1
      DTPlatformName
      iphoneos
      DTSDKName
      iphoneos14.5
      FlutterBuildNumber
      1.0.0
      FlutterPod
      Flutter
      LSRequiresIPhoneOS
      
      UIRequiredDeviceCapabilities
      
          armv7
          arm64
          gamekit
      
      UISupportedInterfaceOrientations
      
          UIInterfaceOrientationPortrait
      
      UIViewControllerBasedStatusBarAppearance
      
      UIUserInterfaceStyle
      Light
      NSMicrophoneUsageDescription
      Allow access to microphone to record audio
      NSPhotoLibraryUsageDescription
      Allow access to photo library to select images and videos
      NSCameraUsageDescription
      Allow access to camera to take photos and videos
      NSAppleMusicUsageDescription
      Allow access to Apple Music to select songs for image/video
      NSMotionUsageDescription
      Allow access to motion and fitness to calculate health information
      NSBluetoothAlwaysUsageDescription
      Allow access to bluetooth
      NSBluetoothPeripheralUsageDescription
      Allow access to bluetooth
      UIBackgroundModes
      
          fetch
          remote-notification
          audio
          voip
          processing
          bluetooth-central
          bluetooth-peripheral
          background-fetch
          location
      
      io.flutter.embedded_views_preview