Overall examples improvement

examples/ASCollectionView/Sample/PresentingViewController.m

@@ -18,6 +18,7 @@
 - (void)viewDidLoad
 {
   [super viewDidLoad];
+  
   self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Push Details" style:UIBarButtonItemStylePlain target:self action:@selector(pushNewViewController)];
 }
 

examples/ASCollectionView/Sample/SupplementaryNode.m

@@ -17,9 +17,11 @@
 
 static CGFloat kInsets = 15.0;
 
-@implementation SupplementaryNode {
-  ASTextNode *_textNode;
-}
+@interface SupplementaryNode ()
+@property (nonatomic, strong) ASTextNode *textNode;
+@end
+
+@implementation SupplementaryNode
 
 - (instancetype)initWithText:(NSString *)text
 {
@@ -37,7 +39,7 @@ static CGFloat kInsets = 15.0;
 {
   ASCenterLayoutSpec *center = [[ASCenterLayoutSpec alloc] init];
   center.centeringOptions = ASCenterLayoutSpecCenteringXY;
-  center.child = _textNode;
+  center.child = self.textNode;
   UIEdgeInsets insets = UIEdgeInsetsMake(kInsets, kInsets, kInsets, kInsets);
   return [ASInsetLayoutSpec insetLayoutSpecWithInsets:insets child:center];
 }
@@ -47,9 +49,9 @@ static CGFloat kInsets = 15.0;
 - (NSDictionary *)textAttributes
 {
   return @{
-           NSFontAttributeName: [UIFont systemFontOfSize:18.0],
-           NSForegroundColorAttributeName: [UIColor whiteColor],
-           };
+    NSFontAttributeName: [UIFont systemFontOfSize:18.0],
+    NSForegroundColorAttributeName: [UIColor whiteColor],
+  };
 }
 
 @end

examples/ASCollectionView/Sample/ViewController.m

@@ -15,50 +15,48 @@
 #import "SupplementaryNode.h"
 #import "ItemNode.h"
 
+@interface ViewController ()
+@property (nonatomic, strong) ASCollectionView *collectionView;
+@property (nonatomic, strong) NSArray *data;
+@end
+
 @interface ViewController () <ASCollectionViewDataSource, ASCollectionViewDelegateFlowLayout>
-{
-  ASCollectionView *_collectionView;
-  NSArray *_data;
-}
 
 @end
 
 
 @implementation ViewController
 
-#pragma mark -
-#pragma mark UIViewController.
-
-- (instancetype)init
+- (void)dealloc
 {
-  if (!(self = [super init]))
-    return nil;
+  self.collectionView.asyncDataSource = nil;
+  self.collectionView.asyncDelegate = nil;
   
-  UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
-  layout.headerReferenceSize = CGSizeMake(50.0, 50.0);
-  layout.footerReferenceSize = CGSizeMake(50.0, 50.0);
-  
-  _collectionView = [[ASCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout];
-  _collectionView.asyncDataSource = self;
-  _collectionView.asyncDelegate = self;
-  _collectionView.backgroundColor = [UIColor whiteColor];
-  
-  [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
-  [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionFooter];
-  
-#if !SIMULATE_WEB_RESPONSE
-  self.navigationItem.leftItemsSupplementBackButton = YES;
-  self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reloadTapped)];
-#endif
-  
-  return self;
+  NSLog(@"ViewController is deallocing");
 }
 
 - (void)viewDidLoad
 {
   [super viewDidLoad];
   
-  [self.view addSubview:_collectionView];
+  UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc] init];
+  layout.headerReferenceSize = CGSizeMake(50.0, 50.0);
+  layout.footerReferenceSize = CGSizeMake(50.0, 50.0);
+  
+  self.collectionView = [[ASCollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:layout];
+  self.collectionView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+  self.collectionView.asyncDataSource = self;
+  self.collectionView.asyncDelegate = self;
+  self.collectionView.backgroundColor = [UIColor whiteColor];
+  
+  [self.collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
+  [self.collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionFooter];
+  [self.view addSubview:self.collectionView];
+  
+#if !SIMULATE_WEB_RESPONSE
+  self.navigationItem.leftItemsSupplementBackButton = YES;
+  self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh target:self action:@selector(reloadTapped)];
+#endif
 
 #if SIMULATE_WEB_RESPONSE
   __weak typeof(self) weakSelf = self;
@@ -86,11 +84,6 @@
 #endif
 }
 
-- (void)viewWillLayoutSubviews
-{
-  _collectionView.frame = self.view.bounds;
-}
-
 - (BOOL)prefersStatusBarHidden
 {
   return YES;
@@ -98,7 +91,7 @@
 
 - (void)reloadTapped
 {
-  [_collectionView reloadData];
+  [self.collectionView reloadData];
 }
 
 #pragma mark -
@@ -116,11 +109,8 @@
 {
   NSString *text = [kind isEqualToString:UICollectionElementKindSectionHeader] ? @"Header" : @"Footer";
   SupplementaryNode *node = [[SupplementaryNode alloc] initWithText:text];
-  if ([kind isEqualToString:UICollectionElementKindSectionHeader]) {
-    node.backgroundColor = [UIColor blueColor];
-  } else {
-    node.backgroundColor = [UIColor redColor];
-  }
+  BOOL isHeaderSection = [kind isEqualToString:UICollectionElementKindSectionHeader];
+  node.backgroundColor = isHeaderSection ? [UIColor blueColor] : [UIColor redColor];
   return node;
 }
 
@@ -155,15 +145,9 @@
   [context completeBatchFetching:YES];
 }
 
-- (UIEdgeInsets)collectionView:(ASCollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
+- (UIEdgeInsets)collectionView:(ASCollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout insetForSectionAtIndex:(NSInteger)section
+{
   return UIEdgeInsetsMake(20.0, 20.0, 20.0, 20.0);
 }
 
-#if SIMULATE_WEB_RESPONSE
--(void)dealloc
-{
-  NSLog(@"ViewController is deallocing");
-}
-#endif
-
 @end

examples/CollectionViewWithViewControllerCells/Sample/ViewController.m

@@ -34,34 +34,21 @@ static NSUInteger kNumberOfImages = 14;
 
 - (instancetype)init
 {
-  if (!(self = [super init]))
-    return nil;
-  
-  _sections = [NSMutableArray array];
-  [_sections addObject:[NSMutableArray array]];
-  for (NSUInteger idx = 0, section = 0; idx < kNumberOfImages; idx++) {
-    NSString *name = [NSString stringWithFormat:@"image_%lu.jpg", (unsigned long)idx];
-    [_sections[section] addObject:[UIImage imageNamed:name]];
-    if ((idx + 1) % 5 == 0 && idx < kNumberOfImages - 1) {
-      section++;
-      [_sections addObject:[NSMutableArray array]];
+  self = [super init];
+  if (self) {
+    
+    _sections = [NSMutableArray array];
+    [_sections addObject:[NSMutableArray array]];
+    for (NSUInteger idx = 0, section = 0; idx < kNumberOfImages; idx++) {
+      NSString *name = [NSString stringWithFormat:@"image_%lu.jpg", (unsigned long)idx];
+      [_sections[section] addObject:[UIImage imageNamed:name]];
+      if ((idx + 1) % 5 == 0 && idx < kNumberOfImages - 1) {
+        section++;
+        [_sections addObject:[NSMutableArray array]];
+      }
     }
+    
   }
-  
-  MosaicCollectionViewLayout *layout = [[MosaicCollectionViewLayout alloc] init];
-  layout.numberOfColumns = 2;
-  layout.headerHeight = 44.0;
-  
-  _layoutInspector = [[MosaicCollectionViewLayoutInspector alloc] init];
-  
-  _collectionView = [[ASCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:layout asyncDataFetching:YES];
-  _collectionView.asyncDataSource = self;
-  _collectionView.asyncDelegate = self;
-  _collectionView.layoutInspector = _layoutInspector;
-  _collectionView.backgroundColor = [UIColor whiteColor];
-  
-  [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
-  
   return self;
 }
 
@@ -69,12 +56,27 @@ static NSUInteger kNumberOfImages = 14;
 {
   [super viewDidLoad];
   
+  MosaicCollectionViewLayout *layout = [[MosaicCollectionViewLayout alloc] init];
+  layout.numberOfColumns = 2;
+  layout.headerHeight = 44.0;
+  
+  _layoutInspector = [[MosaicCollectionViewLayoutInspector alloc] init];
+  
+  _collectionView = [[ASCollectionView alloc] initWithFrame:self.view.bounds collectionViewLayout:layout];
+  _collectionView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
+  _collectionView.asyncDataSource = self;
+  _collectionView.asyncDelegate = self;
+  _collectionView.layoutInspector = _layoutInspector;
+  _collectionView.backgroundColor = [UIColor whiteColor];
+  
+  [_collectionView registerSupplementaryNodeOfKind:UICollectionElementKindSectionHeader];
   [self.view addSubview:_collectionView];
 }
 
-- (void)viewWillLayoutSubviews
+- (void)dealloc
 {
-  _collectionView.frame = self.view.bounds;
+  _collectionView.asyncDataSource = nil;
+  _collectionView.asyncDelegate = nil;
 }
 
 - (BOOL)prefersStatusBarHidden
@@ -109,11 +111,13 @@ static NSUInteger kNumberOfImages = 14;
   return [[SupplementaryNode alloc] initWithText:text];
 }
 
-- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
+- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
+{
   return _sections.count;
 }
 
-- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
+- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
+{
   return [_sections[section] count];
 }
 

examples/CustomCollectionView/Sample/ViewController.m

@@ -65,6 +65,12 @@ static NSUInteger kNumberOfImages = 14;
   return self;
 }
 
+- (void)dealloc
+{
+  _collectionView.asyncDataSource = nil;
+  _collectionView.asyncDelegate = nil;
+}
+
 - (void)viewDidLoad
 {
   [super viewDidLoad];