Flutter url_launcher 打开 Facebook 链接安装在应用程序（Facebook）中，但在 IOS 中它只是打开 Z26CAE750718C32D6D407A 链接而不是 A 链接

Question

I have used Url_launcher package;I want to open Facebook link in facebook app if app installed else the browser.This nicely works in Android but in IOS it only open the Facebook app not the link.

代码是：

String digital_url= "https://facebook.com/AliForDigitalIsrael/";

    new ListTile(
                            leading: new SvgPicture.asset(
                              'assets/images/ic_menu_fb.svg',
                              height: 24.0,
                              width: 24.0,
                              color: Colors.black54,
                            ),
                            title: new Text(
                              Strings.fbdigital,
                              textDirection: TextDirection.rtl,
                            ),
                            onTap: () async {
                              var fbUrl =
                                  "fb://facewebmodal/f?href=" + Strings.digital_url;
                              launchFacebook(fbUrl, Strings.digital_url);
                              hideDrawer();
                            },
    
                          ),
         Future<void> launchFacebook(String fbUrl,String fbWebUrl)
      async {
        try {
          bool launched = await launch(fbUrl, forceSafariVC: false);
          print("Launched Native app $launched");
    
          if (!launched) {
            await launch(fbWebUrl, forceSafariVC: false);
            print("Launched browser $launched");
          }
        } catch (e) {
          await launch(fbWebUrl, forceSafariVC: false);
          print("Inside catch");
        }
      }

Answer 1

我的工作 function：

void _launchSocial(String url, String fallbackUrl) async {
  // Don't use canLaunch because of fbProtocolUrl (fb://)
  try {
    bool launched =
        await launch(url, forceSafariVC: false, forceWebView: false);
    if (!launched) {
      await launch(fallbackUrl, forceSafariVC: false, forceWebView: false);
      }
  } catch (e) {
    await launch(fallbackUrl, forceSafariVC: false, forceWebView: false);
  }
}

然后在 onPressed 或 onTab 中：

_launchSocial('fb://profile/408834569303957', 'https://www.facebook.com/dorockxl')

不要忘记将 fbYOURPAGEID 添加到 Info.plist 中的 CFBundleURLSchemes 数组中：

注意：您可以使用https://lookup-id.com来查找您的页面 id

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>fb408834569303957</string>
        </array>
    </dict>
</array>

顺便说一句，您无需额外设置即可将此方法用于 Twitter 和 Instagram。 Url 足以打开这些原生应用程序：

_launchSocial('https://www.instagram.com/YOURNAME/', '')

_launchSocial('https://twitter.com/YOURNAME', '')