From c3750f7891ab73ed4c4bfa8ddc59969fe77b0d9e Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Tue, 5 Nov 2013 22:25:33 +0400
Subject: load avatars async

---
 Juick/MessageCell.m            |  4 ++--
 Juick/MessagesViewController.m | 10 ++++++++--
 Juick/UIImage+Helpers.h        | 15 +++++++++++++++
 Juick/UIImage+Helpers.m        | 24 ++++++++++++++++++++++++
 4 files changed, 49 insertions(+), 4 deletions(-)
 create mode 100644 Juick/UIImage+Helpers.h
 create mode 100644 Juick/UIImage+Helpers.m

(limited to 'Juick')

diff --git a/Juick/MessageCell.m b/Juick/MessageCell.m
index f20acbe..1dda53d 100644
--- a/Juick/MessageCell.m
+++ b/Juick/MessageCell.m
@@ -68,8 +68,8 @@
     [self.avatar makeConstraints:^(MASConstraintMaker *make) {
         make.top.equalTo(self.contentView.top).with.offset(padding.top);
         make.leading.equalTo(self.contentView.leading).with.offset(padding.left);
-        make.width.lessThanOrEqualTo(@32);
-        make.height.lessThanOrEqualTo(@32);
+        make.width.equalTo(@32);
+        make.height.equalTo(@32);
     }];
     
     [self.titleLabel makeConstraints:^(MASConstraintMaker *make) {
diff --git a/Juick/MessagesViewController.m b/Juick/MessagesViewController.m
index ac6f99d..1fb4ece 100644
--- a/Juick/MessagesViewController.m
+++ b/Juick/MessagesViewController.m
@@ -16,6 +16,7 @@
 #import "ColorsAndButtons.h"
 
 #import "NSURL+PathParameters.h"
+#import "UIImage+Helpers.h"
 
 static NSString *CellIdentifier = @"MessageCell";
 
@@ -153,7 +154,9 @@ static NSString *CellIdentifier = @"MessageCell";
     MessageCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
     [cell updateFonts];
     Message *msg = [_messages objectAtIndex:indexPath.row];
-    [cell.avatar setImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://i.juick.com/as/%@.png", msg.userID]]]]];
+    [UIImage loadFromURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://i.juick.com/as/%@.png", msg.userID]] callback:^(UIImage *image) {
+        [cell.avatar setImage:image];
+    }];
     cell.titleLabel.text = msg.user;
     cell.titleLabel.textColor = [ColorsAndButtons linkColor];
     cell.bodyLabel.text =  msg.text;
@@ -171,7 +174,10 @@ static NSString *CellIdentifier = @"MessageCell";
     [cell updateFonts];
     
     Message *msg = [_messages objectAtIndex:indexPath.row];
-    [cell.avatar setImage:[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://i.juick.com/as/%@.png", msg.userID]]]]];
+    [UIImage loadFromURL:[NSURL URLWithString:[NSString stringWithFormat:@"http://i.juick.com/as/%@.png", msg.userID]] callback:^(UIImage *image) {
+        [cell.avatar setImage:image];
+    }];
+    
     cell.titleLabel.text = msg.user;
     cell.bodyLabel.text =  msg.text;
     
diff --git a/Juick/UIImage+Helpers.h b/Juick/UIImage+Helpers.h
new file mode 100644
index 0000000..d30ad7b
--- /dev/null
+++ b/Juick/UIImage+Helpers.h
@@ -0,0 +1,15 @@
+//
+//  UIImage+Helpers.h
+//  Juick
+//
+//  Created by Vitaly Takmazov on 05.11.13.
+//  Copyright (c) 2013 com.juick. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface UIImage (Helpers)
+
++ (void) loadFromURL: (NSURL*) url callback:(void (^)(UIImage *image))callback;
+
+@end
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
-- 
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