短信防火墙

public class SmsReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
//拿到短信的信息
//短信内容封装在intent中
Bundle bundle = intent.getExtras();
//以pdus为键，取出一个object数组，数组中的每一个元素，都是一条短信
Object[] objects = (Object[]) bundle.get("pdus");

//拿到广播中的所有短信
for (Object object : objects) {
//通过pdu来构造短信
SmsMessage sms = SmsMessage.createFromPdu((byte[])object);
if(sms.getOriginatingAddress().equals("138438")){
//阻止其他广播接收者收到这条广播
abortBroadcast();
//				SmsManager.getDefault().sendTextMessage(sms.getOriginatingAddress(), null, "你是个好人", null, null);
}
//			System.out.println(sms.getMessageBody());

}

}

}

<uses-permission android:name="android.permission.RECEIVE_SMS"/

<receiver android:name="com.itheima.smslanjie.SmsReceiver">
<intent-filter android:priority="1000">
<action android:name="android.provider.Telephony.SMS_RECEIVED"/>
</intent-filter>
</receiver>