GUI now display error / warning messages on the main thread instead o…

…f the callback thread
DigitalDJ · Oct 28, 2010 · cdbd30b · cdbd30b
1 parent db5efeb
commit cdbd30b
Showing 1 changed file with 50 additions and 43 deletions.
diff --git a/Classes/iPhoneStreamingPlayerAppDelegate.m b/Classes/iPhoneStreamingPlayerAppDelegate.m
@@ -12,6 +12,8 @@
 //  appreciated but not required.
 //
 
+#import <dispatch/dispatch.h>
+
 #import "iPhoneStreamingPlayerAppDelegate.h"
 #import "iPhoneStreamingPlayerViewController.h"
 #import "AudioStreamer.h"
@@ -48,49 +50,54 @@ - (void)dealloc {
 
 - (void)presentAlertWithTitle:(NSNotification *)notification
 {
-	NSString *title = [[notification userInfo] objectForKey:@"title"];
-	NSString *message = [[notification userInfo] objectForKey:@"message"];
-	if (!uiIsVisible) {
-#ifdef TARGET_OS_IPHONE
-		if(kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iPhoneOS_4_0) {
-			UILocalNotification *localNotif = [[UILocalNotification alloc] init];	
-			localNotif.alertBody = message;
-			localNotif.alertAction = NSLocalizedString(@"Open", @"");
-			[[UIApplication sharedApplication] presentLocalNotificationNow:localNotif];
-			[localNotif release];
-		}
-#endif
-	}
-	else {
-#ifdef TARGET_OS_IPHONE
-		UIAlertView *alert = [
-							  [[UIAlertView alloc]
-							   initWithTitle:title
-							   message:message
-							   delegate:nil
-							   cancelButtonTitle:NSLocalizedString(@"OK", @"")
-							   otherButtonTitles: nil]
-							  autorelease];
-		[alert
-		 performSelector:@selector(show)
-		 onThread:[NSThread mainThread]
-		 withObject:nil
-		 waitUntilDone:NO];
-#else
-		NSAlert *alert =
-		[NSAlert
-		 alertWithMessageText:title
-		 defaultButton:NSLocalizedString(@"OK", @"")
-		 alternateButton:nil
-		 otherButton:nil
-		 informativeTextWithFormat:message];
-		[alert
-		 performSelector:@selector(runModal)
-		 onThread:[NSThread mainThread]
-		 withObject:nil
-		 waitUntilDone:NO];
-#endif
-	}
+    dispatch_queue_t main_queue = dispatch_get_main_queue();
+
+    dispatch_async(main_queue, ^{
+
+        NSString *title = [[notification userInfo] objectForKey:@"title"];
+        NSString *message = [[notification userInfo] objectForKey:@"message"];
+        if (!uiIsVisible) {
+    #ifdef TARGET_OS_IPHONE
+            if(kCFCoreFoundationVersionNumber >= kCFCoreFoundationVersionNumber_iPhoneOS_4_0) {
+                UILocalNotification *localNotif = [[UILocalNotification alloc] init];	
+                localNotif.alertBody = message;
+                localNotif.alertAction = NSLocalizedString(@"Open", @"");
+                [[UIApplication sharedApplication] presentLocalNotificationNow:localNotif];
+                [localNotif release];
+            }
+    #endif
+        }
+        else {
+    #ifdef TARGET_OS_IPHONE
+            UIAlertView *alert = [
+                                  [[UIAlertView alloc]
+                                   initWithTitle:title
+                                   message:message
+                                   delegate:nil
+                                   cancelButtonTitle:NSLocalizedString(@"OK", @"")
+                                   otherButtonTitles: nil]
+                                  autorelease];
+            [alert
+             performSelector:@selector(show)
+             onThread:[NSThread mainThread]
+             withObject:nil
+             waitUntilDone:NO];
+    #else
+            NSAlert *alert =
+            [NSAlert
+             alertWithMessageText:title
+             defaultButton:NSLocalizedString(@"OK", @"")
+             alternateButton:nil
+             otherButton:nil
+             informativeTextWithFormat:message];
+            [alert
+             performSelector:@selector(runModal)
+             onThread:[NSThread mainThread]
+             withObject:nil
+             waitUntilDone:NO];
+    #endif
+        }
+    });
 }
 - (void)applicationWillResignActive:(UIApplication *)application {
     /*