我正在尝试实现微软的官方文档。当我尝试将号码转到拨号页时，它会引发异常 FeatureNotSupportedException 根据文件规定，哪些国家
尝试在不支持某个功能的平台上使用该功能时发生的异常。
我使用的是oneplus ac2001 android11.0-api-30，我相信所有手机都必须具备这种基本的拨号功能 PhoneDialer.Open(translatedNumber) ```
async void OnCall(object sender, System.EventArgs e)
{
if (await this.DisplayAlert(
"Dial a Number",
"Would you like to call " + translatedNumber + "?",
"Yes",
"No"))
{
try
{
PhoneDialer.Open(translatedNumber);
}
catch (ArgumentNullException)
{
await DisplayAlert("Unable to dial", "Phone number was not valid.", "OK");
}
catch (FeatureNotSupportedException)
{
await DisplayAlert("Unable to dial", "Phone dialing not supported.", "OK");
}
catch (Exception)
{
// Other error has occurred.
await DisplayAlert("Unable to dial", "Phone dialing failed.", "OK");
}
}
}