在android appwidget中实现位置监听器时出现问题 [英] Problem while implement location listener in android appwidget

问题描述

我正在开发一个小部件，它将获取当前 GPS 位置并将此值传递给远程 PHP 页面以获取信息并将其显示在小部件中.这就是我想要做的.

I am working on a Widget which will get the Current GPS location and pass this value to remote PHP page to get the Information and display it in the Widget. This is what I am trying to do.

我在为 appWidget 实现位置侦听器时遇到问题.它没有与当前位置一起更新，而是显示初始小部件，即正在加载小部件"(我在这里放置此文本)

I am facing problem while implementing Location Listener for appWidget. It is not updating with the Current Location and It is showing the initial widget i.e "Loading Widget"(Here I put this text)

我们可以为 AppWidgetProvider 实现位置监听器吗?
或者
您能否建议我在 App Widget 中获取 GPS 位置的可能解决方案?

我在清单文件中放置了所有必要的权限.
这是我的代码片段:
<代码>

I placed all necessary permissions in Manifest file.
Here is my code snippet:

public class test extends AppWidgetProvider {
static LocationManager locMan;
static Location curLocation;
static Boolean locationChanged;

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,int[] appWidgetIds) {
    // To prevent any ANR timeouts, we perform the update in a service
    context.startService(new Intent(context, UpdateService.class));
}

public static class UpdateService extends Service {
    // GPS Listener Class
    LocationListener gpsListener = new LocationListener() {
        public void onLocationChanged(Location location) {
            // Log.w("GPS", "Started");
            if (curLocation == null) {
                curLocation = location;
                locationChanged = true;
            }

            if (curLocation.getLatitude() == location.getLatitude() && curLocation.getLongitude() == location.getLongitude())
                locationChanged = false;
            else
                locationChanged = true;

            curLocation = location;

            if (locationChanged) 
                locMan.removeUpdates(gpsListener);

        }

        public void onProviderDisabled(String provider) {

        }

        public void onProviderEnabled(String provider) {
            // Log.w("GPS", "Location changed", null);
        }

        public void onStatusChanged(String provider, int status,
                Bundle extras) {
            if (status == 0)// UnAvailable
            {

            } else if (status == 1)// Trying to Connect
            {

            } else if (status == 2) {// Available

            }
        }

    };

    // In service start method, I am registering for GPS Updates
    @Override
    public void onStart(Intent intent, int startId) {

        locMan = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        if (locMan.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            locMan.requestLocationUpdates(LocationManager.GPS_PROVIDER,20000, 1, gpsListener);
        } else {
            this.startActivity(new Intent("android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS"));
        }

        if (curLocation != null) {
            double lat = curLocation.getLatitude();
            double lng = curLocation.getLongitude();
            Toast.makeText(getBaseContext(),"Lat : " + String.valueOf(lat) + "
 Long : "+ String.valueOf(lng), Toast.LENGTH_LONG).show();

        }
        // Build the widget update for today
        RemoteViews updateViews = buildUpdate(this);

        // Push update for this widget to the home screen
        ComponentName thisWidget = new ComponentName(this,InKakinadaWidget.class);
        AppWidgetManager manager = AppWidgetManager.getInstance(this);
        manager.updateAppWidget(thisWidget, updateViews);

    }

    public RemoteViews buildUpdate(Context context) {
        // Here I am updating the remoteview
        return updateViews;
    }

    @Override
    public IBinder onBind(Intent intent) {
        // We don't need to bind to this service
        return null;
    }

}
}

在此先感谢...

问候，Raghavendra K.

With Regards, Raghavendra K.

推荐答案

你是在模拟器还是在设备上遇到这个问题?如果在模拟器上，请确保使用 DDMS 设置 GPS 位置.但最简单的做法可能是在设备上运行您的代码，看看您是否以这种方式获得 GPS 更新.

Are you having this problem in the emulator or on a device? If on the emulator, make sure you use DDMS to set a GPS location. But the easiest thing to do might be to run your code on a device to see if you get GPS updates that way.

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