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我想在位置更改时获取纬度和经度。如何使用 Intentservice？另一件事是，即使应用程序在后台，我也想要连续的当前纬度和经度。

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4 回答 4

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你可以试试getLastKnownLocation ()，但是很可能会为null。并且 IntentService 不能等待某些位置修复到达。

相反，您需要一个常规服务，专门用于处理这种情况。改用cwac- locpoll

于 2013-04-29T12:34:40.960 回答
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You will need to implement LocationListner in a service. Here is a link that has more information. Location Listener in Background Service Android and Location listener in a service sends notification issue

In case you dont want to use a service: BroadcastReceiver for location You need to implement a custom broadcast receiver.

于 2013-04-29T12:38:51.200 回答
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尝试下面的代码它对我有用以获得坐标

public Location getLocation() {
        try {
            locationManager = (LocationManager) mContext
                    .getSystemService(LOCATION_SERVICE);
        // getting GPS status
        isGPSEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);

        // getting network status
        isNetworkEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);

        if (!isGPSEnabled && !isNetworkEnabled) {
            // no network provider is enabled
        } else {
            this.canGetLocation = true;
            if (isNetworkEnabled) {
                locationManager.requestLocationUpdates(
                        LocationManager.NETWORK_PROVIDER,
                        MIN_TIME_BW_UPDATES,
                        MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                Log.d("Network", "Network Enabled");
                if (locationManager != null) {
                    location = locationManager
                            .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                    if (location != null) {
                        latitude = location.getLatitude();
                        longitude = location.getLongitude();
                    }
                }
            }
            // if GPS Enabled get lat/long using GPS Services
            if (isGPSEnabled) {
                if (location == null) {
                    locationManager.requestLocationUpdates(
                            LocationManager.GPS_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("GPS", "GPS Enabled");
                    if (locationManager != null) {
                        location = locationManager
                                .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        }
                    }
                }
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
    }

    return location;
}

希望也适合你

于 2013-04-29T12:33:20.267 回答
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如果你真的必须使用 IntentService，你可以实现一个带有适当超时的循环。使用 onLocationChanged 更改一些值。循环可以每隔一秒测试一次这个值。如果值改变，退出循环，如果达到超时退出循环。该循环将使 IntentService 保持活动状态，等待 onLocationChanged 触发。

于 2014-10-27T15:48:35.157 回答