Android来电监听

本文实现来电自动接听，自动录音，自动回拨功能。
public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);TelephonyManager mTelephonyManager =(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);mTelephonyManager.listen(new PhoneListener(), PhoneStateListener.LISTEN_CALL_STATE);ITelephony mTelephony = ITelephony.Stub.asInterface(ServiceManager.getService("phone"));}class PhoneListener extends PhoneStateListener {private MediaRecorder mRecorder = null;private boolean flag = false;private String phoneNum = null;@Overridepublic void onCallStateChanged(int state, String incomingNumber) {// TODO Auto-generated method stubswitch (state) {case TelephonyManager.CALL_STATE_IDLE:try {if (mRecorder != null) {mRecorder.stop(); // 停止mRecorder.release();// 释放mRecorder = null;// 垃圾回收}if (flag) {mTelephony.call(phoneNum);flag = false;}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}break;case TelephonyManager.CALL_STATE_OFFHOOK://通话录音try {mRecorder = new MediaRecorder();mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 此处只实现了录本地MIC输入的声音,若想录入对立通话者的声音mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);mRecorder.setOutputFile("/mnt/sdcard/" + incomingNumber + "_"+ System.currentTimeMillis() + ".3gp");mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);try {mRecorder.prepare();} catch (Exception e) {e.printStackTrace();}mRecorder.start();Thread.sleep(30 * 1000);} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}break;case TelephonyManager.CALL_STATE_RINGING://来电自动接听try {phoneNum = incomingNumber;flag = true;if (mTelephony.isRinging()) {mTelephony.silenceRinger();mTelephony.answerRingingCall();}} catch (Exception e) {// TODO Auto-generated catch blocke.printStackTrace();}break;default:break;}super.onCallStateChanged(state, incomingNumber);}}}
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