iOS

- (void)telphone
{
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"请选择要拨打的号码" message:nil preferredStyle:UIAlertControllerStyleActionSheet];

// phones : 电话对象的数组
// phone ： 电话对象

for (Phone *phone in phones) {
    UIAlertAction *judgeCode = [UIAlertAction actionWithTitle:phone.phoneNumber style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        
        //拨打电话、本质就是调用内置的打电话应用
        NSString *str = [NSString stringWithFormat:@"tel:%@",phone.phoneNumber]
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
    }];
    
    [alertController addAction:judgeCode];
} 
}



- (void)telphone
{

//若直接拨打某一个电话可直接调用
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:177****5923"]];
    
}


- (void)sendSMS{
    //发短信
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"sms://%@",@"177****2592"]];
[[UIApplication sharedApplication] openURL:url];
}

Android

//打电话
    private void telPhone() {
        //在AndroidManifest.xml中添加权限
//        <uses-permission android:name="android.permission.CALL_PHONE"></uses-permission>

        Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "177****5923"));
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) {
            
            return;
        }
        startActivity(intent); //这就是内部类访问外部类的实例
    }



//发短信
    private void sendSms(){

        //在AndroidManifest.xml中添加权限
//        <uses-permission android:name="android.permission.SEND_SMS"></uses-permission>
        
        
        //处理返回的发送状态
        String SENT_SMS_ACTION = "SENT_SMS_ACTION";
        Intent sentIntent = new Intent(SENT_SMS_ACTION);
        PendingIntent sentPI = PendingIntent.getBroadcast(this, 0, sentIntent,
                0);
        // register the Broadcast Receivers
        this.registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                switch (getResultCode()) {
                    case Activity.RESULT_OK:
                        Toast.makeText(context,
                                "短信发送成功", Toast.LENGTH_SHORT)
                                .show();
                        break;
                    case SmsManager.RESULT_ERROR_GENERIC_FAILURE:
                        break;
                    case SmsManager.RESULT_ERROR_RADIO_OFF:
                        break;
                    case SmsManager.RESULT_ERROR_NULL_PDU:
                        break;
                }
            }
        }, new IntentFilter(SENT_SMS_ACTION));



        //处理返回的接收状态
        String DELIVERED_SMS_ACTION = "DELIVERED_SMS_ACTION";
// create the deilverIntent parameter
        Intent deliverIntent = new Intent(DELIVERED_SMS_ACTION);
        PendingIntent deliverPI = PendingIntent.getBroadcast(this, 0,
                deliverIntent, 0);
        this.registerReceiver(new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {
                Toast.makeText(context,
                        "收信人已经成功接收", Toast.LENGTH_SHORT)
                        .show();
            }
        }, new IntentFilter(DELIVERED_SMS_ACTION));




        SmsManager sm = SmsManager.getDefault();
        /*
        * arg0:目标号码
        * arg1:短信中心号码，null表示使用默认
        * arg2:短信正文
        * arg3:可为空，不为空是为返回的发送状态广播
        * arg4:可为空，不为空是为返回的接受状态广播
        * */
        //把长短信截成若干条短短信,短信太长，运营商是不会发送的，需要我们自己截取
        ArrayList<String> sms = sm.divideMessage("短信内容");
        for (String string : sms){
            sm.sendTextMessage("17762405923",null,string,sentPI, deliverPI);
        }
    }