如何在没有用户互动的情况下发送短信

在本教程中，
厦门网站建设如何在没有用户交互的情况下发送SMS。实际上，要以编程方式发送SMS，您需要实现一个平台通道并使用SMSManager发送SMS。 首先，向AndroidManifest.xml添加适当的权限。 1 < uses– permission android : name= “android.permission.SEND_SMS” / > 然后在您的MainActivity.java中： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 package com . yourcompany . example ; import android . os . Bundle ; import android . telephony . SmsManager ; import android . util . Log ; import io . flutter . app . FlutterActivity ; import io . flutter . plugin . common . MethodCall ; import io . flutter . plugin . common . MethodChannel ; import io . flutter . plugins . GeneratedPluginRegistrant ; public class MainActivity extends FlutterActivity {    private static final String CHANNEL = “sendSms” ;    private MethodChannel . Result callResult ;    @ Override    protected void onCreate ( Bundle savedInstanceState ) {      super . onCreate ( savedInstanceState ) ;      GeneratedPluginRegistrant . registerWith ( this ) ;      new MethodChannel ( getFlutterView ( ) , CHANNEL ) . setMethodCallHandler (              new MethodChannel . MethodCallHandler ( ) {                @ Override                public void onMethodCall ( MethodCall call , MethodChannel . Result result ) {                  if ( call . method . equals ( “send” ) ) {                    String num = call . argument ( “phone” ) ;                    String msg = call . argument ( “msg” ) ;                    sendSMS ( num , msg , result ) ;                  } else {                    result . notImplemented ( ) ;                  }                }              } ) ;    }    private void sendSMS ( String phoneNo , String msg , MethodChannel . Result result ) {        try {            SmsManager smsManager = SmsManager . getDefault ( ) ;            smsManager . sendTextMessage ( phoneNo , null , msg , null , null ) ;            result . success ( “SMS Sent” ) ;        } catch ( Exception ex ) {            ex . printStackTrace ( ) ;            result . error ( “Err” , “Sms Not Sent” , “” ) ;        }    } } 飞镖代码： 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 import ‘dart:async’ ; import ‘package:flutter/material.dart’ ; import ‘package:flutter/widgets.dart’ ; import ‘package:flutter/services.dart’ ; void main ( ) {    runApp ( new MaterialApp (      title : “Rotation Demo” ,      home : new SendSms ( ) ,    ) ) ; } class SendSms extends StatefulWidget {    @ override    _SendSmsState createState ( ) = > new _SendSmsState ( ) ; } class _SendSmsState extends State < SendSms > {    static const platform = const MethodChannel ( ‘sendSms’ ) ;    Future < Null > sendSms ( ) async {      print ( “SendSMS” ) ;      try {        final String result = await platform . invokeMethod ( ‘send’ , < String , dynamic > { “phone” : “+91XXXXXXXXXX” , “msg” : “Hello! I’m sent programatically.” } ) ; //Replace a ‘X’ with 10 digit phone number        print ( result ) ;      } on PlatformException catch ( e ) {        print ( e . toString ( ) ) ;      }    }    @ override    Widget build ( BuildContext context ) {      return new Material (        child : new Container (          alignment : Alignment . center ,          child : new FlatButton ( onPressed : ( ) = > sendSms ( ) , child : const Text ( “Send SMS” ) ) ,        ) ,      ) ;    } }