一环境搭建

1.安装插件

打开 AS ---> File ---> Settings, 安装如下两个插件 Dart 和 Flutter 插件

?2. 下载 flutter SDK

? ? 手动下载：https://flutter.dev/docs/development/tools/sdk/releases

? ? ? 然后添加到如下位置：

Flutter 还可以在线下载：在线下载点击一下，就可以了

?3. 配置环境变量

flutter SDK 目录路径

Android SDK 目录路径

?4.测试flutter环境

?中间有时候会报错，根据错误提示解决

二 Integrate a Flutter module into your Android project

我们来用一个测试apk 展现这个flutter 加载流程。

只是写了一个demo apk? 有一个按钮，点击按钮后，就会调起flutter 界面

demo apk 下载地址：demo

1. 先选择你的APK，然后 new Module?

Using the?File > New > New Module…

2.? 在项目的 build.gradle 下添加芯片架构支持

Consider using the?abiFilters?Android Gradle Plugin API to limit the supported architectures in your APK. Doing this avoids a missing?libflutter.so?runtime crash, for example:

android {
  //...
  defaultConfig {
    ndk {
      // Filter for architectures supported by Flutter.
      abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86_64'
    }
  }
}

3. 在 app 的?`AndroidManifest.xml`. 中添加

<application
  <activity
     android:name="io.flutter.embedding.android.FlutterActivity"
     android:theme="@style/AppTheme"   
 android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
  android:hardwareAccelerated="true"
  android:windowSoftInputMode="adjustResize"
  />
... 
</application>

4.在?MainActivity.java 中添加如下内容

import io.flutter.embedding.android.FlutterActivity;


    private void initButton() {
        buttton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(
                        FlutterActivity.createDefaultIntent(getApplicationContext())
                );

            }
        });
    }

5. 然后直接编译，就可以了。

效果图如下

三? 修改flutter 文件

?在如下目录下找到 main.dart 文件

删除 main.dart 里面所有内容，添加我们的内容?

import 'package:flutter/material.dart';

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Welcome to Flutter',
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('Welcome to Flutter'),
        ),
        body: new Center(
          child: new Text('Hello World'),
        ),
      ),
    );
  }
}

?编译后允许效果图，显示出hello world。

?添加? dart 库

在main.dart 添加

import 'package:msa_flutter_plugin/msa_flutter_plugin.dart';



void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    
    initMSAtate();
    
    return new MaterialApp(
      title: 'Welcome to Flutter',
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('Welcome to Flutter'),
        ),
        body: new Center(
          child: new Text('Hello World'),
        ),
      ),
    );
  }
}

Future<void> initMSAtate() async {
  MSAData data = await MsaFlutterPlugin.getMsaIdConfigs();
  print("phg__ 是否支持MSA：${data.isSupport}");
  print("phg__ oaid: ${data.oaid}");
  print("phg__ vaid: ${data.vaid}");
  print("phg__ aaid: ${data.aaid}");
}

?在 pubspec.yaml 添加该依耐库

?在?pubspec.yaml 文件页面，点击? ?Pub upgrade ，然后AS会自动更新改库

?然后编译，可能会报如下错误

Error: Cannot run with sound null safety, because the following dependencies
Cannot run with sound null safety, because the following dependencies

don't support null safety:

?- package:msa_flutter_plugin

For solutions, see https://dart.dev/go/unsound-null-safety
?

这时，我们只要在main.dart文件的顶端添加这个就可以了