prefs: made location prefs work like new backend prefs

AndroidManifest.xml

@@ -70,13 +70,13 @@
 	<activity android:name=".PrefsAct" android:label="@string/app_prefs"
 		android:parentActivityName=".HubActivity"
 		/>
-	<activity android:name=".BackendPrefs" android:label="@string/app_prefs"
+	<activity android:name=".BackendPrefs" android:label="@string/p__connection"
 		android:parentActivityName=".PrefsAct"
 		/>
 	<activity android:name=".PrefSymbolAct" android:label="@string/p_symbol"
 		android:parentActivityName=".PrefsAct"
 		/>
-	<activity android:name=".LocationPrefs" android:label="@string/app_prefs" 
+	<activity android:name=".LocationPrefs" android:label="@string/p__location"
 		android:parentActivityName=".PrefsAct"
 		android:launchMode="singleTop"
 		/>

res/xml/location.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android">
+        <de.duenndns.ListPreferenceWithValue
+                android:key="loc_source"
+		android:title="@string/p_locsource"
+		android:summary="@string/p_locsource_summary"
+                android:entries="@array/p_locsource_e"
+                android:entryValues="@array/p_locsource_ev"
+		android:defaultValue="smartbeaconing"
+		android:dialogTitle="@string/p_locsource" />
+
+</PreferenceScreen>

res/xml/preferences.xml

@@ -67,14 +67,6 @@
 		android:dialogTitle="@string/p_status_entry" />
 
     <!-- sub-screen "Position Reports" -->
-        <de.duenndns.ListPreferenceWithValue
-                android:key="loc_source"
-		android:title="@string/p_locsource"
-		android:summary="@string/p_locsource_summary"
-                android:entries="@array/p_locsource_e"
-                android:entryValues="@array/p_locsource_ev"
-		android:defaultValue="smartbeaconing"
-		android:dialogTitle="@string/p_locsource" />
 
     <PreferenceScreen
 	    android:title="@string/p__location"

src/LocationPrefs.scala

@@ -3,28 +3,46 @@ package org.aprsdroid.app
 import _root_.android.content.Context
 import _root_.android.location.{Location, LocationManager}
 import _root_.android.os.Bundle
+import _root_.android.content.SharedPreferences
+import _root_.android.content.SharedPreferences.OnSharedPreferenceChangeListener
 import _root_.android.preference.{PreferenceActivity, PreferenceManager}
+import _root_.android.widget.Toast
 
-class LocationPrefs extends PreferenceActivity {
+class LocationPrefs extends PreferenceActivity with OnSharedPreferenceChangeListener {
+	def loadXml() {
+		val prefs = new PrefsWrapper(this)
+		addPreferencesFromResource(R.xml.location)
+		addPreferencesFromResource(LocationSource.instanciatePrefsAct(prefs))
+	}
 
 	override def onCreate(savedInstanceState: Bundle) {
 		super.onCreate(savedInstanceState)
-		val prefs = new PrefsWrapper(this)
-		addPreferencesFromResource(LocationSource.instanciatePrefsAct(prefs))
+		loadXml()
+		getPreferenceScreen().getSharedPreferences().registerOnSharedPreferenceChangeListener(this)
+	}
+	override def onDestroy() {
+		super.onDestroy()
+		getPreferenceScreen().getSharedPreferences().unregisterOnSharedPreferenceChangeListener(this)
+	}
+
+	override def onSharedPreferenceChanged(sp: SharedPreferences, key : String) {
+		if (key == "loc_source" || key == "manual_lat" || key == "manual_lon") {
+			setPreferenceScreen(null)
+			loadXml()
+		}
 	}
 
 	override def onNewIntent(i : android.content.Intent) {
 		if (i != null && i.getDataString() != null && i.getDataString().equals("gps2manual")) {
 			val l = getSystemService(Context.LOCATION_SERVICE).asInstanceOf[LocationManager]
 					.getLastKnownLocation(LocationManager.GPS_PROVIDER)
+			val prefs = new PrefsWrapper(this)
 			if (l != null) {
-				val pe = new PrefsWrapper(this).prefs.edit()
+				val pe = prefs.prefs.edit()
 				pe.putString("manual_lat", l.getLatitude().toString())
 				pe.putString("manual_lon", l.getLongitude().toString())
 				pe.commit()
-			}
-			finish()
-			startActivity(i)
+			} else Toast.makeText(this, getString(R.string.map_track_unknown, prefs.getCallsign()), Toast.LENGTH_SHORT).show()
 		}
 	}
 }