Question

我在决定实现后台自定义服务类的方式时有点困惑。

我需要什么：

位置更新和活动识别。
REST API调用和Geofence API。

我是Android的后台处理新手，我不知道如何实现它。

是否可以创建ThreadPoolExecutor（任务管理器类，runnables等）并处理线程间通信？

如果是，是否可以在Thread类中收听位置更新？

目前，我正在使用此库（Smart-location-lib）来收听位置更新。

有更好的解决方案吗？

非常感谢任何帮助！

Answer 1

这是在后台服务中使用Google API的最佳方式你没有解释活动识别是什么意思？

public class MyLocationService extends Service implements LocationListener,
    GoogleApiClient.ConnectionCallbacks,
    GoogleApiClient.OnConnectionFailedListener {

private GoogleApiClient mGoogleApiClient;
private LocationRequest mLocationRequest;

public MyLocationService() {

}

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

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

@Override
public int onStartCommand(Intent intent, int flags, int startId) {
    mGoogleApiClient.connect();
    Toast.makeText(this, "Location services started", Toast.LENGTH_SHORT).show();
    return super.onStartCommand(intent, flags, startId);
}

@Override
public IBinder onBind(Intent intent) {
    // TODO: Return the communication channel to the service.
    throw new UnsupportedOperationException("Not yet implemented");
}

@Override
public void onLocationChanged(Location location) {
    System.out.println("MyLocationService.onLocationChanged");
    // TODO with location updateshere
}

@Override
public void onConnected(Bundle bundle) {

    mLocationRequest = LocationRequest.create();
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    mLocationRequest.setInterval(1000); // Update location every second

    LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
    Location loc = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    sendMyLocUpdate(loc, UserProfile.DRIVER);
}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {

}

@Override
public void onDestroy() {

    Toast.makeText(this, "Location services stopped", Toast.LENGTH_LONG).show();

    Location loc = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
    sendMyLocUpdate(loc, UserProfile.PASSENGER);

    mGoogleApiClient.disconnect();
    super.onDestroy();
}

}

Android自定义服务 - 类实现

1 个答案: