1

我需要你的宝贵帮助;)

我有一个在后台运行的Android 服务,它定期修复设备的位置(位置轮询器)。当我使用使用 Google Play 服务的新 Android 位置 API更新代码时。让我们看一下服务:

public class NewLocationPollerService extends Service implements GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener
{
    private LocationRequest mLocationRequest    = null;
    private LocationClient  mLocationClient     = null;

    ...
    private class PollerThread extends WakefulThread
    {
        protected void onPreExecute()
        {
            if ( GooglePlayServicesUtility.areServicesConnected( NewLocationPollerService.this ) )
                mLocationClient.requestLocationUpdates(mLocationRequest, intent);
        }

        protected void onPostExecute()
        {
            if ( GooglePlayServicesUtility.areServicesConnected( NewLocationPollerService.this ) )
                mLocationClient.removeLocationUpdates(intent);

            super.onPostExecute();
        }
    }
    ...
}

方法“ areServicesConnected() ”如下:

public class GooglePlayServicesUtility
{
    private static final String TAG = GooglePlayServicesUtility.class.getSimpleName();

    public static boolean areServicesConnected(Context context)
    {
        int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(context);
        if (ConnectionResult.SUCCESS == resultCode)
            return true;
        else
            return false;
    }
    ...
}

有时服务崩溃,日志如下:

java.lang.IllegalStateException: Not connected. Call connect() and wait for onConnected() to be called.
at com.google.android.gms.internal.k.B(Unknown Source)
at com.google.android.gms.internal.bh.a(Unknown Source)
at com.google.android.gms.internal.bh$c.B(Unknown Source)
at com.google.android.gms.internal.bg.requestLocationUpdates(Unknown Source)
at com.google.android.gms.internal.bh.requestLocationUpdates(Unknown Source)
at com.google.android.gms.location.LocationClient.requestLocationUpdates(Unknown Source)
at     me.app.location.NewLocationPollerService$PollerThread.onPreExecute(NewLocationPollerService.java:210    )
at me.app.thread.WakefulThread.onLooperPrepared(WakefulThread.java:79)
at android.os.HandlerThread.run(HandlerThread.java:59)
at me.app.thread.WakefulThread.run(WakefulThread.java:94)

你怎么看?我读了一个类似的帖子,但不是一回事。似乎有时如果 areServicesConnected() 方法返回 true,稍后服务将由于某些原因断开连接。

谢谢,每一个帮助将不胜感激!

快乐编码;)

4

1 回答 1

5

isGooglePlayServicesAvailable不会告诉您您已连接,它只是检查服务的可用性。

您应该完全按照您的 logcat 中的内容进行操作。致电LocationClient.connect(),一旦您的代码到达您的实现ConnectionCallbacks.onConnected,我在您的问题中没有看到,您将被连接。

于 2013-10-01T20:41:25.213 回答