android服務（service）初步——通話錄音

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啟動服務之後，監聽手機TelephonyManager狀態,根據不同情況做出選擇，源碼以及如下：

產生的錄音檔案：

Log日誌：

 

這個不知道為什麼，點擊多次停止服務的時候，總是會出現下面的BUG：

圖片看不清楚，我把日誌複製了出來如下：

09-21 19:56:31.850: ERROR/audio_input(34): unsupported parameter: x-pvmf/media-input-node/cap-config-interface;valtype=key_specific_value
09-21 19:56:31.850: ERROR/audio_input(34): VerifyAndSetParameter failed

知道原因的，麻煩告訴我，灰常感激。。。俺百度了好久不知道為啥。

 

源碼：

MainActivity:

package com.song;    import android.app.Activity;  import android.content.Intent;  import android.os.Bundle;  import android.util.Log;  import android.view.View;  import android.widget.Button;    public class PhoneListenerActivity extends Activity  {        protected static final String ACTION = "recordingFlag";      protected static final String TAG = "TAG";      Button btnStart;      Button btnStop;        @Override      public void onCreate(Bundle savedInstanceState)      {          super.onCreate(savedInstanceState);          setContentView(R.layout.main);            btnStart = (Button) findViewById(R.id.btnstart);          btnStop = (Button) findViewById(R.id.btnstop);            btnStart.setOnClickListener(new Button.OnClickListener()          {                @Override              public void onClick(View v)              {                  Log.v(TAG, "startService");                  startService(new Intent(ACTION));              }          });            btnStop.setOnClickListener(new Button.OnClickListener()          {                @Override              public void onClick(View v)              {                  Log.v(TAG, "stopService");                  stopService(new Intent(ACTION));                      }            });        }  }  

服務類：

package com.song;    import java.io.IOException;    import android.app.Service;  import android.content.Context;  import android.content.Intent;  import android.media.MediaRecorder;  import android.os.Environment;  import android.os.IBinder;  import android.telephony.PhoneStateListener;  import android.telephony.TelephonyManager;  import android.util.Log;    public class PhoneListenerService extends Service  {        private MediaRecorder recorder;      private boolean recording = false;        @Override      public IBinder onBind(Intent intent)      {          return null;      }        @Override      public void onCreate()      {          TelephonyManager manager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);          manager.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);          super.onCreate();      }        private PhoneStateListener listener = new PhoneStateListener()      {            @Override          public void onCallStateChanged(int state, String incomingNumber)          {              super.onCallStateChanged(state, incomingNumber);              switch (state)              {              case TelephonyManager.CALL_STATE_IDLE:// 空閑或者掛斷                  // 掛斷就停止錄音                  stopRecord();                  break;              case TelephonyManager.CALL_STATE_RINGING:// 響鈴                  // 響鈴什麼都不做                  break;              case TelephonyManager.CALL_STATE_OFFHOOK:// 接起電話                  // 接起電話開始錄音                  recordCalling();                  break;              default:                  break;              }          }      };        private void stopRecord()      {          if (recording)          {              Log.v("TAG", "stopRecord");              recorder.stop();              recorder.release();// 釋放資源          }      }        private void recordCalling()      {            try          {              Log.v("TAG", "recordCalling");              recorder = new MediaRecorder();              recorder.setAudioSource(MediaRecorder.AudioSource.MIC);              recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);              recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);              recorder.setOutputFile(Environment.getExternalStorageDirectory()                      .getAbsolutePath()+"/" + System.currentTimeMillis() + ".3gp");              recorder.prepare();              recorder.start();              recording = true;          }catch (Exception e)          {              e.printStackTrace();          }        }  }  

設定檔：

<?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="com.song"        android:versionCode="1"        android:versionName="1.0">      <uses-sdk android:minSdkVersion="8" />        <application android:icon="@drawable/icon" android:label="@string/app_name">          <activity android:name=".PhoneListenerActivity"                    android:label="@string/app_name">              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                  <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>        <service android:name=".PhoneListenerService">          <intent-filter>              <action android:name="recordingFlag"/>          </intent-filter>      </service>            </application>      <uses-permission android:name="android.permission.READ_PHONE_STATE"/>      <uses-permission android:name="android.permission.RECORD_AUDIO"/>      <!-- 向sdcard中寫資料的許可權 -->      <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  </manifest>  

 

android服務（service）初步——通話錄音