load avatars async

1 files changed, 24 insertions, 0 deletions

diff --git a/Juick/UIImage+Helpers.m b/Juick/UIImage+Helpers.m
new file mode 100644
index 0000000..a4ae8e4
--- /dev/null
+++ b/Juick/UIImage+Helpers.m
@@ -0,0 +1,24 @@
+//
+//  UIImage+Helpers.m
+//  Juick
+//
+//  Created by Vitaly Takmazov on 05.11.13.
+//  Copyright (c) 2013 com.juick. All rights reserved.
+//
+
+#import "UIImage+Helpers.h"
+
+@implementation UIImage (Helpers)
+
++ (void) loadFromURL: (NSURL*) url callback:(void (^)(UIImage *image))callback {
+    dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0ul);
+    dispatch_async(queue, ^{
+        NSData * imageData = [NSData dataWithContentsOfURL:url];
+        dispatch_async(dispatch_get_main_queue(), ^{
+            UIImage *image = [UIImage imageWithData:imageData];
+            callback(image);
+        });
+    });
+}
+
+@end