android - onCellLocationChanged问题

当我的设备改变手机连接时，我需要启动服务，我想可以使用下面的onCellLocationChanged()实现，但只有在我收到来电时才会发出哔哔声…
我的听众：

public class CellLocationListener extends PhoneStateListener {

    @Override
    public void onCellLocationChanged(CellLocation location) {
        super.onCellLocationChanged(location);

        int cid = 0;
        int lac = 0;

        if (location != null) {
            if (location instanceof GsmCellLocation) {
                cid = ((GsmCellLocation) location).getCid();
                lac = ((GsmCellLocation) location).getLac();
            }
            else if (location instanceof CdmaCellLocation) {
                cid = ((CdmaCellLocation) location).getBaseStationId();
                lac = ((CdmaCellLocation) location).getSystemId();
            }
        }

        String cellInfo = Integer.toString(lac)+"-"+Integer.toString(cid);

        Log.v("logg","CELL CHANGED:"+cellInfo);
    }
}

我在main activity上使用了相同的cellinfo，当我启动它时，cellinfo会更改它的值，但是没有来自broadcas接收器的哔哔声……
在清单上：

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_UPDATES" />

<receiver android:name="dado.auto3gdataswitch.CellChangeReceiver">
    <intent-filter>
        <action android:name="android.intent.action.PHONE_STATE" />
    </intent-filter>
</receiver>

我的广播接收器

  public class CellChangeReceiver extends BroadcastReceiver {

     TelephonyManager telephony;

     public void onReceive(Context context, Intent intent) {
        CellLocationListener phoneListener = new CellLocationListener();
        telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        telephony.listen(phoneListener, CellLocationListener.LISTEN_CALL_STATE);

        Toast.makeText(context, "ON receiver", Toast.LENGTH_LONG).show();

        final MediaPlayer mp = MediaPlayer.create(context, R.raw.beep);
        mp.start();
        mp.setOnCompletionListener(new OnCompletionListener() {

            @Override
            public void onCompletion(MediaPlayer mp) {
                mp.stop();
                mp.release();
            }
        });

        Log.v("logg","onreceiver");

    }
}

我只在接到来电时听到哔哔声，换手机时听不到。
发生了什么？是吗？

最佳答案

您正在收听CellLocationListener.LISTEN_CALL_STATE，但您应该收听CellLocationListener.LISTEN_CELL_LOCATION。如果您希望在单元格更改时播放声音，则应将相应的代码移动到onCellLocationChanged。只有在接收到android.intent.action.PHONE_STATE时，才会注册您的单元格更改侦听器。

关于android - onCellLocationChanged问题，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/23676679/