GooglePlayServicesClient和ConnectionCallbacks

Question

im init LocationClient和LocationRequest

locationClient = new LocationClient(context, this, this);
request = LocationRequest.create();
        request.setInterval(MIN_TIME);
        request.setInterval(UPDATE_INTERVAL_IN_MILLISECONDS);
        request.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        request.setFastestInterval(FAST_INTERVAL_CEILING_IN_MILLISECONDS);                     

连接到GooglePlayServices

locationClient.connect();         

并在执行回调方法时请求位置更新

@Override
public void onConnected(final Bundle bundle)
{
  locationClient.requestLocationUpdates(request, this);//this exception point
}    

但抛出异常

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.internal.bh.requestLocationUpdates(Unknown Source)
            at com.google.android.gms.location.LocationClient.requestLocationUpdates(Unknown Source)    
            at ru.etransport.locationlib.LocationListenerGPs.onConnected(LocationListenerGPs.java:45)     

更新：我在连接前使用 isGooglePlayServicesAvailable

Answer 1

使用isGooglePlayServicesAvailable，它会检查服务的可用性。

Answer 2

您是否在任何地方实例化 GoogleApiClient ？像：

mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(Wearable.API)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();