来电监听及录音

来电状态监听 ```java public class MyService extends Service {

private MediaRecorder mRecorder;
private String num;

@Override
public void onCreate() {
    super.onCreate();
    TelephonyManager manager = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);    // 获取电话管理器
    manager.listen(new MyPhoneStateListener(), PhoneStateListener.LISTEN_CALL_STATE);    // 监听电话状态
}

private class MyPhoneStateListener extends PhoneStateListener {            // 电话状态监听器
    public void onCallStateChanged(int state, String incomingNumber) {    // 在电话状态改变时执行
        switch (state) {
            case TelephonyManager.CALL_STATE_RINGING:    // 振铃
                System.out.println("来电话了");
                num = incomingNumber;//得到来电号码
                break;        
            case TelephonyManager.CALL_STATE_OFFHOOK:    // 摘机
                System.out.println("开始通话");
                start();
                break;    
            case TelephonyManager.CALL_STATE_IDLE:        // 空闲
                System.out.println("挂断电话");
                stop();
                break;
        }
    }
}

public void onDestroy() {
    tm.listen(listener, PhoneStateListener.LISTEN_NONE);// 取消监听
    listener = null;
}

```

录音 ```java private void start() { mRecorder = new MediaRecorder(); // 创建媒体记录器 mRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL); // 指定音频源(麦克风) mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP); // 设置输出格式(3gp) mRecorder.setOutputFile("/mnt/sdcard/" + num + "-" + System.currentTimeMillis() + ".3gp"); // 指定文件路径(SD卡) mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 指定编码(AMR_NB) try { mRecorder.prepare(); // 准备 } catch (Exception e) { e.printStackTrace(); }
mRecorder.start(); // 开始 }

@Override public IBinder onBind(Intent intent) { return null; }

//下面是录音 private void stop() { if (mRecorder != null) { mRecorder.stop(); // 停止 mRecorder.release(); // 释放 mRecorder = null; // 垃圾回收 } } ```

邮箱：charon.chui@gmail.com
Good Luck!