本文实例讲述了android编程实现电话录音的方法。分享给大家供大家参考。具体如下：
在清单文件AndroidManifest.xml中添加权限：
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<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<!-- 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"/>
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java代码如下：
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public class PhoneListenerService extends Service {
@Override
public 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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希望本文所述对大家的Android程序设计有所帮助。