需求

app 在呼叫 api 時，api 會要求填一些欄位 app name 、package name、app version等資訊，
package_info_plus 就可以取得app的資訊

package_info_plus - Readme

可以透過PackageInfo查詢應用程式包的資訊。

PackageInfo packageInfo = await PackageInfo.fromPlatform();

String appName = packageInfo.appName;
String packageName = packageInfo.packageName;
String version = packageInfo.version;
String buildNumber = packageInfo.buildNumber;

package_info_plus - Install

直接在 pubspec.yaml 加上 package_info_plus: ^4.1.0 ，然後pub get 

dependencies:
  package_info_plus: ^4.1.0

package_info_plus - Example

在 /lib/main.dart 加入 程式
import 'package:package_info_plus/package_info_plus.dart';

宣告變數和初始化

class _MyHomePageState extends State<MyHomePage> {
  PackageInfo _packageInfo = PackageInfo(
    appName: 'Unknown',
    packageName: 'Unknown',
    version: 'Unknown',
    buildNumber: 'Unknown',
    buildSignature: 'Unknown',
    installerStore: 'Unknown',
  );

  @override
  void initState() {
    super.initState();
    _initPackageInfo();
  }

  Future<void> _initPackageInfo() async {
    final info = await PackageInfo.fromPlatform();
    setState(() {
      _packageInfo = info;
    });
  }

  Widget _infoTile(String title, String subtitle) {
    return ListTile(
      title: Text(title),
      subtitle: Text(subtitle.isEmpty ? 'Not set' : subtitle),
    );
  }

    infoTile('App name', _packageInfo.appName),
    _infoTile('Package name', _packageInfo.packageName),
    _infoTile('App version', _packageInfo.version),
    _infoTile('Build number', _packageInfo.buildNumber),
    _infoTile('Build signature', _packageInfo.buildSignature),

執行結果

心得

是不是很簡單就可以用程式去讀取app 的資訊呀 !!