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 {
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.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;
@Override
public void onCallStateChanged(int state, String incomingNumber) {
// TODO Auto-generated method stub
switch (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 block
e.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 block
e.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 block
e.printStackTrace();
}
break;
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
}
}