本文实例讲述了Android编程之利用服务实现电话监听的方法。分享给大家供大家参考,具体如下:
1. 启动模拟器,部署应用
2. 利用模拟器控制器发送短信启动服务(查看日志输出判断是否成功)
3. 向模拟器拨打电话,并接听,挂断电话后,利用文件管理查看对应的cache目录或者sdcard中生成了3gp文件,并将其复制到pc中播放以验证。
清单设置(一个receiver,一个service,若干权限)
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< uses-permission android:name = "android.permission.READ_PHONE_STATE" />
< uses-permission android:name = "android.permission.RECORD_AUDIO" />
< uses-permission android:name = "android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
< uses-permission android:name = "android.permission.WRITE_EXTERNAL_STORAGE" />
< uses-permission android:name = "android.permission.RECEIVE_SMS" />
…
< application …>
< receiver android:name = "BootBroadcastReceiver" >
< intent-filter >
< action android:name = "android.provider.Telephony.SMS_RECEIVED" />
</ intent-filter >
</ receiver >
< service android:name = "PhoneListenerService" />
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电话监听器服务类:PhoneListenerService
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package cn.class3g.phonelistener;
...
public class PhoneListenerService extends Service {
public IBinder onBind(Intent arg0) {
return null ;
}
public void onCreate() {
super .onCreate();
Log.i( "TAG" , "服务启动了" );
// 对电话的来电状态进行监听
TelephonyManager telManager = (TelephonyManager) this .getSystemService(Context.TELEPHONY_SERVICE);
// 注册一个监听器对电话状态进行监听
telManager.listen( new MyPhoneStateListener(),
PhoneStateListener.LISTEN_CALL_STATE);
}
private class MyPhoneStateListener extends PhoneStateListener {
MediaRecorder recorder;
File audioFile;
String phoneNumber;
public void onCallStateChanged( int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE: /* 无任何状态时 */
if (recorder != null) {
recorder.stop();// 停止刻录
recorder.reset();// 重设
recorder.release();// 刻录完成一定要释放资源
}
break;
case TelephonyManager.CALL_STATE_OFFHOOK: /* 接起电话时 */
try {
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC); // 设置音频采集原
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);// 内容输出格式
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB); // 音频编码方式
// recorder.setOutputFile("/sdcard/myvoice.amr");
audioFile = new File(
Environment.getExternalStorageDirectory(),
phoneNumber + "_" + System.currentTimeMillis()
+ ".3gp");
recorder.setOutputFile(audioFile.getAbsolutePath());
Log.i("TAG", audioFile.getAbsolutePath());
recorder.prepare(); // 预期准备
recorder.start();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
break;
case TelephonyManager.CALL_STATE_RINGING: /* 电话进来时 */
phoneNumber = incomingNumber;
break ;
default :
break ;
}
super .onCallStateChanged(state, incomingNumber);
}
}
}
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利用开机启动广播启动服务(实验环境中为了方便起见可以先改用短消息广播)
开机启动完成广播action
复制代码 代码如下:
<action android:name="android.intent.action.BOOT_COMPLETED"/>
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package cn.class3g.phonelistener;
...
public class BootBroadcastReceiver extends BroadcastReceiver {
public void onReceive(Context context, Intent intent) {
Log.i( "TAG" , "广播被接收了" );
Intent serviceIntent = new Intent(context, PhoneListenerService. class );
context.startService(serviceIntent);
}
}
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希望本文所述对大家Android程序设计有所帮助。