public class TelReceiver extends BroadcastReceiver { public TelReceiver() { } @Override public void onReceive(Context context, Intent intent) { Intent i=new Intent(context,ListenPhoneService.class); i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); i.setAction(intent.getAction()); i.putExtra(TelephonyManager.EXTRA_INCOMING_NUMBER,  intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER));//電話號碼 i.putExtra(TelephonyManager.EXTRA_STATE,  intent.getStringExtra(TelephonyManager.EXTRA_STATE));//電話狀態 context.startService(i);//啟動服務 }}

<receiver android:name=".TelReceiver" > <intent-filter android:priority="1000" > <action android:name="android.intent.action.PHONE_STATE" /> <action android:name="android.intent.action.NEW_OUTGOING_CALL" /> </intent-filter></receiver>

public class ListenPhoneService extends Service { private AudioManager mAudioManager; private TelephonyManager tm; public ListenPhoneService() { } @Override public void onCreate() { super.onCreate(); mAudioManager=(AudioManager)getSystemService(Context.AUDIO_SERVICE); tm=(TelephonyManager)getSystemService(Service.TELEPHONY_SERVICE); } @Override public int onStartCommand(Intent intent, int flags, int startId) { if(intent.getAction().equals(Intent.ACTION_NEW_OUTGOING_CALL)){//去電廣播，android沒有來電話廣播 }else{//去掉撥打電話就是來電狀態了 //方法1//獲得來電電話// String number=intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);//獲得電話狀態// String state=intent.getStringExtra(TelephonyManager.EXTRA_STATE);//  Log.d("jereh", "incoming phone:" + number);//  Log.d("jereh","call state:"+state);//  TelephonyManager.EXTRA_STATE_IDLE: 沒有來電 或者 掛斷//  TelephonyManagerEXTRA_STATE_OFFHOOK: 接起電話//  TelephonyManager.EXTRA_STATE_RINGING:當電話呼入時,響鈴時//  if(state.equals(TelephonyManager.EXTRA_STATE_RINGING)){//  if(number.equals("13280998858")){//攔截指定的電話號碼//  mAudioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT);//  Log.d("jereh","電話被攔截");//  stopCall();//   mAudioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);//恢復鈴聲//  }//  }else if(state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK)){ //接起電話//  recordCall();//開始錄音//  }else if(state.equals(TelephonyManager.EXTRA_STATE_IDLE)){//  stopCall();//停止錄音//  } //方法2  // 設置一個監聽器,監聽電話狀態  tm.listen(listener,PhoneStateListener.LISTEN_CALL_STATE); } return super.onStartCommand(intent, flags, startId); } /** * 掛斷電話 */ private void stopCall(){ try {  //Android的設計將ServiceManager隱藏了，所以只能使用反射機制獲得。  Method method=Class.forName("android.os.ServiceManager").getMethod("getService", String.class);  IBinder binder=(IBinder)method.invoke(null, new Object[]{"phone"});//獲得系統電話服務  ITelephony telephoney=ITelephony.Stub.asInterface(binder);  telephoney.endCall();//掛斷電話  stopSelf();//停止服務 } catch (Exception e) {  e.printStackTrace(); } } PhoneStateListener listener=new PhoneStateListener(){ @Override public void onCallStateChanged(int state,String incomingNumber){  switch (state){  //手機空閑了  case TelephonyManager.CALL_STATE_IDLE:   stopCall();//停止錄音   break;  //接起電話  case TelephonyManager.CALL_STATE_OFFHOOK:   recordCall();//開始錄音   break;  // 響鈴時  case TelephonyManager.CALL_STATE_RINGING:   Log.e("jereh", "來電號碼是："+ incomingNumber);   // 如果該號碼屬于黑名單   if (incomingNumber.equals("123456")) {   // 如果是黑名單，就進行屏蔽   stopCall();   }   break;  } } }; /** * 停止錄音 */ private void stopRecord(){ if(recording){  recorder.stop();  recorder.release();  recording=false;  stopSelf();//停止服務 } } /** * 電話錄音 */ private MediaRecorder recorder; private boolean recording ; private void recordCall(){ Log.d("jereh", "record calling") if( Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){ recorder=new MediaRecorder(); recorder.setAudioSource(MediaRecorder.AudioSource.MIC);//讀麥克風的聲音 recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);//設置輸出格式 recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);// 編碼方式 File file=new File(Environment.getDownloadCacheDirectory().getAbsolutePath(),"recorder"); if(!file.exists()){  file.mkdir(); } recorder.setOutputFile(file.getAbsolutePath() + "/" + System.currentTimeMillis() + "3gp");// 存放的位置是放在sd卡recorder目錄下 try {  recorder.prepare();  recorder.start();  recording=true; } catch (IOException e) {  e.printStackTrace(); } } } @Override public IBinder onBind(Intent intent) {  throw new UnsupportedOperationException("Not yet implemented"); }}

<service android:name=".ListenPhoneService" android:enabled="true" android:exported="true" ></service>