Specific function to get LC when LinphoneManager may be already destroyed.

src/org/linphone/DialerActivity.java

@@ -385,7 +385,7 @@ public class DialerActivity extends SoftVolumeActivity implements LinphoneGuiLis
 
 
 	public void onCallStateChanged(LinphoneCall call, State state, String message) {
-		LinphoneCore lc = LinphoneManager.getLc();
+		LinphoneCore lc = LinphoneManager.getLcIfManagerNotDestroyedOrNull();
 		if (lc==null) {
 			/* we are certainly exiting, ignore then.*/
 			return;

src/org/linphone/LinphoneManager.java

@@ -214,13 +214,16 @@ public final class LinphoneManager implements LinphoneCoreListener {
 	public static synchronized final LinphoneManager getInstance() {
 		if (instance != null) return instance;
 
-		if (!sExited) throw new RuntimeException("Linphone Manager should be created before accessed");
-		return null;
+		if (sExited) {
+			throw new RuntimeException("Linphone Manager was already destroyed. "
+					+ "Better use getLcIfManagerNotDestroyed and check returned value");
+		}
+
+		throw new RuntimeException("Linphone Manager should be created before accessed");
 	}
 	
 	public static synchronized final LinphoneCore getLc() {
-		LinphoneManager m=getInstance();
-		return m!=null ? m.mLc : null;
+		return getInstance().mLc;
 	}
 
 
@@ -916,5 +919,14 @@ public final class LinphoneManager implements LinphoneCoreListener {
 
 		return distanceInCm < threshold;
 	}
+	public static synchronized LinphoneCore getLcIfManagerNotDestroyedOrNull() {
+		if (sExited) {
+			// Can occur if the UI thread play a posted event but in the meantime the LinphoneManager was destroyed
+			// Ex: stop call and quickly terminate application.
+			Log.w("Trying to get linphone core while LinphoneManager already destroyed");
+			return null;
+		}
+		return getLc();
+	}
 
 }