sendSMS static method
发短信
phoneNumber 电话号码 10086
若不支持发短信则返回false
Implementation
static Future<bool> sendSMS(String phoneNumber, {String content = ''}) async {
Uri uri = Uri(scheme: 'sms', path: phoneNumber, queryParameters: {'body': content});
if (!await onCanLaunchUrl(uri.toString())) return false;
return await launchUrl(uri);
}