如何从Flutter启动whatsapp和Facebook Messenger窗口以指向特定联系人？

Question

使用url_launcher，我可以打开电话来拨打电话。

 var phone = "+123456789";
 launch("tel://$phone");

如何为Facebook Messenger和whatsapp做同样的事情？

Answer 1

我找到了解决方案。

要打开whatsapp：

var whatsappUrl ="whatsapp://send?phone=$phone";
await canLaunch(whatsappUrl)? launch(whatsappUrl):print("open whatsapp app link or do a snackbar with notification that there is no whatsapp installed");

要打开Messenger或Facebook：

首先获得缩短的URL

如果您的facebook个人资料是facebook.com/yourName facebook url，fb.me/yourName而Messenger url是m.me/yourName

那你做 launch("http://$messengerUrl");

Facebook网站将通过URL浏览器自动打开应用程序中的链接。如果未安装任何应用，它将转到应用/播放商店

Answer 2

To open the whatsapp you can use this plugin: https://pub.dartlang.org/packages/flutter_launch

1. Add this to your package's pubspec.yaml file:

dependencies:
    flutter_launch: "^0.0.2"

2. Install it

$ flutter packages get

3. Import it

import 'package:flutter_launch/flutter_launch.dart';

4. Example:

await FlutterLaunch.launchWathsApp(phone: "5534992019999", message: "Hello");

Complete example: https://pub.dartlang.org/packages/flutter_launch#-installing-tab-