我正在使用一個Widget,它將獲取當前GPS位置並將此值傳遞給遠程PHP頁面以獲取信息並將其顯示在Widget中。這是我想要做的。在android appwidget中實現位置監聽器時出現問題
我在爲appWidget實現Location Listener時遇到問題。它不是用當前位置進行更新,而是顯示最初的小部件,即「加載小部件」(這裏我把這個文本)
我們可以爲AppWidgetProvider實現位置監聽器嗎?
或
你能否建議我在App Widget中獲取GPS位置的可能解決方案?
我把所有必要的權限放在清單文件中。
這裏是我的代碼片段:
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) + "\n 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;
}
}
}
在此先感謝...
與問候, Raghavendra K.
嗨邁克, 我在我的HTC英雄測試。但沒有運氣。我的代碼有問題嗎? 還是你可以建議我任何其他方式來獲得gps位置的Widget? 感謝您的快速反應... – Raghu 2009-11-26 11:27:32
我很樂意提供幫助,但我對小部件不是很熟悉。我忘記提及的一件事就是確保你使用設備在外面走動 - 過去我一直在努力處理代碼,只是意識到設備無法在室內獲得GPS定位,因此不會發送給我GPS更新。 – emmby 2009-11-26 17:22:21