android电话录音

在清单文件AndroidManifest.xml中添加权限：

<!-- 在SDCard中创建与删除文件权限 --><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/><!-- 往SDCard写入数据权限 --><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.RECORD_AUDIO"/><!-- 访问internet权限 --><uses-permission android:name="android.permission.INTERNET"/><uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>

                    2. 具体实现代码：                                    public class PhoneListenerService extends Service {@Overridepublic void onCreate() {        TelephonyManager manager =                   (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);//监听电话的状态manager.listen(new MyListener(), PhoneStateListener.LISTEN_CALL_STATE);}private final class MyListener extends PhoneStateListener {private String num;private MediaRecorder recorder;public void onCallStateChanged(int state, String incomingNumber) {switch (state) {case TelephonyManager.CALL_STATE_RINGING:  /* 电话进来时 */num = incomingNumber;break;case TelephonyManager.CALL_STATE_OFFHOOK: /* 接起电话时 */try {File file = new File(Environment.getExternalStorageDirectory(), num + "_" + System.currentTimeMillis() + ".3gp");recorder = new MediaRecorder();recorder.setAudioSource(AudioSource.MIC);//声音采集来源(话筒)recorder.setOutputFormat(OutputFormat.THREE_GPP);//输出的格式recorder.setAudioEncoder(AudioEncoder.AMR_NB);//音频编码方式recorder.setOutputFile(file.getAbsolutePath());//输出方向recorder.prepare();recorder.start();} catch (Exception e) {e.printStackTrace();}break;case TelephonyManager.CALL_STATE_IDLE:  /* 无任何状态时 */if (recorder != null) {recorder.stop();recorder.release();}break;}}}}

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