1、收发短信代码如下：
public class MsmUtils extends BroadcastReceiver {/*** 发送 MSM* @param activity* @param targetNumber* @param content*/public static void sendMsm(Activity activity, String targetNumber, String content) {//创建一个PendingIntent对象PendingIntent pi = PendingIntent.getActivity(activity, 0, new Intent(), 0);//获取SmsManagerSmsManager sManager = SmsManager.getDefault();//发送短信sManager.sendTextMessage(targetNumber, null, content, pi, null);}/*** 接收到新MSM* @param context* @param intent*/@Overridepublic void onReceive(Context context, Intent intent) {Bundle bundle = intent.getExtras();SmsMessage smsMessage;if (null != bundle) {Object[] smsObj = (Object[]) bundle.get("pdus");for (Object object : smsObj) {smsMessage = SmsMessage.createFromPdu((byte[]) object);String content = smsMessage.getDisplayMessageBody();String from = smsMessage.getOriginatingAddress();//Do your coding here}}}}
2、在AndroidManifest.xml中声明以下权限：
<!-- 授予发送短信的权限 --><uses-permission android:name="android.permission.SEND_SMS" /><uses-permission android:name="android.permission.READ_PHONE_STATE" /><!-- 授予接收短信的权限 --><uses-permission android:name="android.permission.RECEIVE_SMS" /><uses-permission android:name="android.permission.READ_SMS" />
3、若在AndroidManifest.xml中声明权限后，运行时仍出现缺少权限的错误，则可在Activity中动态请求权限（如果只需要发送短信，则只需要请求发送所需的权限，其他同理），如下：
ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.SEND_SMS, Manifest.permission.READ_PHONE_STATE, Manifest.permission.RECEIVE_SMS}, 1);
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