启动后初始化 GoogleApiClient

Question

我在启动后注册我的应用程序以接收位置更新。我的引导接收器正在启动一个进行初始化的服务：

@Override
protected void onHandleIntent(Intent intent) {
 GoogleApiClient client = _googleApiBuilder.get()
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();

 client.connect();
}

有时在onConnected 回调方法中，我收到异常指示，我尚未连接。经过一些研究，我遇到了这个 - GoogleApiClient is throwing "GoogleApiClient is not connected yet" AFTER onConnected function getting called

这让我想，我初始化 google api 的方式是否正确？例如我应该在服务中初始化它吗？

在后台执行此操作的建议方法是什么？

Answer 1

希望对你有所帮助。

public class LocationService extends Service implements ConnectionCallbacks,
    OnConnectionFailedListener, LocationListener {

private static final String TAG = LocationService.class.getSimpleName();
private GoogleApiClient mGoogleApiClient;

@Override
public IBinder onBind(final Intent intent) {
    return null;
}

@Override
public void onCreate() {
    super.onCreate();
    initGoogleApi();
}

@Override
public int onStartCommand(final Intent intent, final int flags,
        final int startId) {
    if (mGoogleApiClient != null) {
        mGoogleApiClient.connect();
    }
    return START_STICKY;
}

@Override
public void onDestroy() {
    super.onDestroy();
}

@Override
public void onLocationChanged(final Location location) {

}

@Override
public void onConnectionFailed(final ConnectionResult result) {
}

@Override
public void onConnected(final Bundle bundale) {
    createLocationRequest();
}

@Override
public void onConnectionSuspended(final int arg0) {
}

protected void stopLocationUpdates() {
    LocationServices.FusedLocationApi.removeLocationUpdates(
            mGoogleApiClient, this);
}

protected void createLocationRequest() {
    final LocationRequest mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(Constants.INTERVAL);
    mLocationRequest.setFastestInterval(Constants.FAST_INTERVAL);
    mLocationRequest
            .setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);
    mLocationRequest.setSmallestDisplacement(0);
    startLocationUpdates(mLocationRequest);
}

private void initGoogleApi() {
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API).addApi(ActivityRecognition.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this).build();
}

}

Answer 2

改用以下解决方案：

googleApiInstance.blockingConnect(10, TimeUnit.SECONDS);

或者换句话说，我不是在不同的线程中运行操作（这就是connect 正在做的事情），而是在我自己的线程中运行它（我正在使用IntentService）并管理连接生命周期我自己。