Prevent incall activity from launching twice

src/org/linphone/IncallActivity.java

@@ -85,8 +85,8 @@ public class IncallActivity extends AbstractCalleesActivity implements
 	private static IncallActivity instance;
 	private CountDownTimer timer;
 	public static boolean active;
-	@Override protected void setActive(boolean a) {active = a;}
+	@Override protected synchronized void setActive(boolean a) {active = a;}
-	@Override protected boolean isActive() {return active;}
+	@Override protected synchronized boolean isActive() {return active;}
 
 	public static boolean isReady() {
 		return instance!=null;
@@ -116,6 +116,8 @@ public class IncallActivity extends AbstractCalleesActivity implements
 		if (finishIfAutoRestartAfterACrash(savedInstanceState)) {
 			return;
 		}
+		setActive(true);
+		
 		if (!Version.isXLargeScreen(this))
 		    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
 		
@@ -148,6 +150,12 @@ public class IncallActivity extends AbstractCalleesActivity implements
 		super.onCreate(savedInstanceState);
 	}
 	
+	@Override
+	protected void onPause() {
+		IncallActivity.active = false;
+		super.onPause();
+	}
+
 	@Override
 	protected boolean shouldFinishCalleeActivity() {
 		return lc().getCallsNb() == 0;

src/org/linphone/LinphoneActivity.java

@@ -420,13 +420,13 @@ public class LinphoneActivity extends TabActivity implements ContactPicked
 		if (IncallActivity.instance() != null && IncallActivity.instance().isActive()) {
 			return;
 		}
-		mHandler.postDelayed(new Runnable() {
+		mHandler.post(new Runnable() {
 			public void run() {
 				if (IncallActivity.instance() != null && IncallActivity.instance().isActive()) return;
 				Intent intent = new Intent().setClass(LinphoneActivity.this, IncallActivity.class);
 				startActivityForResult(intent, incall_activity);
 			}
-		}, 0);
+		});
 	}
 
 	public void startIncomingCallActivity() {