no message

Classes/AQGridView.h

@@ -241,6 +241,7 @@ extern NSString * const AQGridViewSelectionDidChangeNotification;
 
 @property (nonatomic, retain) UIView * gridHeaderView;
 @property (nonatomic, retain) UIView * gridFooterView;
+@property (nonatomic, assign) BOOL flexibleFooterView;
 
 @property (nonatomic, assign) CGFloat leftContentInset;
 @property (nonatomic, assign) CGFloat rightContentInset;

Classes/AQGridView.m

@@ -119,6 +119,8 @@ - (void) _sharedGridViewInit
 	_flags.allowsSelection = 1;
 	_flags.usesPagedHorizontalScrolling = NO;
 	_flags.contentSizeFillsBounds = 1;
+
+    self.flexibleFooterView = NO;
 }
 
 - (id)initWithFrame: (CGRect) frame
@@ -507,6 +509,11 @@ - (void)setContentOffset: (CGPoint) contentOffset animated: (BOOL) animate
 
 - (void) setContentSize: (CGSize) newSize
 {
+    if( self.flexibleFooterView ){
+        [super setContentSize: newSize];
+        return;
+    }
+
 	if ( (_flags.contentSizeFillsBounds == 1) && (newSize.height < self.bounds.size.height) )
 		newSize.height = self.bounds.size.height;
 
@@ -626,8 +633,13 @@ - (void) reloadData
 
 	_gridData.numberOfItems = [_dataSource numberOfItemsInGridView: self];
 
-	// update our content size as appropriate
-	self.contentSize = [_gridData sizeForEntireGrid];
+    if( self.flexibleFooterView ){
+        self.contentSize = [_gridData sizeForEntireGridFlexibleFooter];
+    } else {
+        // update our content size as appropriate
+        self.contentSize = [_gridData sizeForEntireGrid];
+    }
+    NSLog(@"self.contentSize = %@",NSStringFromCGSize(self.contentSize));
 
     // fix up the visible index list
     NSUInteger cutoff = MAX(0, _gridData.numberOfItems-_visibleIndices.length);

Classes/AQGridViewData.h

@@ -79,6 +79,7 @@
 // metrics used within the scroll view
 - (CGRect) rectForEntireGrid;
 - (CGSize) sizeForEntireGrid;
+- (CGSize) sizeForEntireGridFlexibleFooter;
 - (NSUInteger) numberOfItemsPerRow;
 
 - (CGRect) cellRectAtIndex: (NSUInteger) index;

Classes/AQGridViewData.m

@@ -168,6 +168,20 @@ - (CGSize) sizeForEntireGrid
 	return ( CGSizeMake(((CGFloat)ceilf(_actualCellSize.width * numPerRow)) + _leftPadding + _rightPadding, height) );
 }
 
+- (CGSize) sizeForEntireGridFlexibleFooter
+{
+	NSUInteger numPerRow = [self numberOfItemsPerRow];
+    if ( numPerRow == 0 )       // avoid a divide-by-zero exception
+        return ( CGSizeZero );
+	NSUInteger numRows = _numberOfItems / numPerRow;
+	if ( _numberOfItems % numPerRow != 0 )
+		numRows++;
+
+	CGFloat height = ( ((CGFloat)ceilf((CGFloat)numRows * _actualCellSize.height)) + _topPadding + _bottomPadding );
+
+	return ( CGSizeMake(((CGFloat)ceilf(_actualCellSize.width * numPerRow)) + _leftPadding + _rightPadding, height) );
+}
+
 - (NSUInteger) numberOfItemsPerRow
 {
 	if ( _layoutDirection == AQGridViewLayoutDirectionVertical )

Examples/LazyLoadingDemo/.gitignore

@@ -0,0 +1,3 @@
+*.xcodeproj/*.mode1v3
+*.xcodeproj/*.pbxuser
+**/xcuserdata

Examples/LazyLoadingDemo/Classes/IconDownloader/AppRecord.h

@@ -0,0 +1,58 @@
+/*
+     File: AppRecord.h 
+ Abstract: Object encapsulating information about an iPhone app in the 'Top Paid Apps' RSS feed.
+ Each one corresponds to a row in the app's table.
+  
+  Version: 1.4 
+  
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 
+ Inc. ("Apple") in consideration of your agreement to the following 
+ terms, and your use, installation, modification or redistribution of 
+ this Apple software constitutes acceptance of these terms.  If you do 
+ not agree with these terms, please do not use, install, modify or 
+ redistribute this Apple software. 
+  
+ In consideration of your agreement to abide by the following terms, and 
+ subject to these terms, Apple grants you a personal, non-exclusive 
+ license, under Apple's copyrights in this original Apple software (the 
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple 
+ Software, with or without modifications, in source and/or binary forms; 
+ provided that if you redistribute the Apple Software in its entirety and 
+ without modifications, you must retain this notice and the following 
+ text and disclaimers in all such redistributions of the Apple Software. 
+ Neither the name, trademarks, service marks or logos of Apple Inc. may 
+ be used to endorse or promote products derived from the Apple Software 
+ without specific prior written permission from Apple.  Except as 
+ expressly stated in this notice, no other rights or licenses, express or 
+ implied, are granted by Apple herein, including but not limited to any 
+ patent rights that may be infringed by your derivative works or by other 
+ works in which the Apple Software may be incorporated. 
+  
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 
+  
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 
+ POSSIBILITY OF SUCH DAMAGE. 
+  
+ Copyright (C) 2013 Apple Inc. All Rights Reserved. 
+  
+ */
+
+@interface AppRecord : NSObject
+
+@property (nonatomic, strong) NSString *appName;
+@property (nonatomic, strong) UIImage *appIcon;
+@property (nonatomic, strong) NSString *artist;
+@property (nonatomic, strong) NSString *imageURLString;
+@property (nonatomic, strong) NSString *appURLString;
+
+@end

Examples/LazyLoadingDemo/Classes/IconDownloader/AppRecord.m

@@ -0,0 +1,54 @@
+/*
+     File: AppRecord.m 
+ Abstract: Object encapsulating information about an iPhone app in the 'Top Paid Apps' RSS feed.
+ Each one corresponds to a row in the app's table.
+  
+  Version: 1.4 
+  
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 
+ Inc. ("Apple") in consideration of your agreement to the following 
+ terms, and your use, installation, modification or redistribution of 
+ this Apple software constitutes acceptance of these terms.  If you do 
+ not agree with these terms, please do not use, install, modify or 
+ redistribute this Apple software. 
+  
+ In consideration of your agreement to abide by the following terms, and 
+ subject to these terms, Apple grants you a personal, non-exclusive 
+ license, under Apple's copyrights in this original Apple software (the 
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple 
+ Software, with or without modifications, in source and/or binary forms; 
+ provided that if you redistribute the Apple Software in its entirety and 
+ without modifications, you must retain this notice and the following 
+ text and disclaimers in all such redistributions of the Apple Software. 
+ Neither the name, trademarks, service marks or logos of Apple Inc. may 
+ be used to endorse or promote products derived from the Apple Software 
+ without specific prior written permission from Apple.  Except as 
+ expressly stated in this notice, no other rights or licenses, express or 
+ implied, are granted by Apple herein, including but not limited to any 
+ patent rights that may be infringed by your derivative works or by other 
+ works in which the Apple Software may be incorporated. 
+  
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 
+  
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 
+ POSSIBILITY OF SUCH DAMAGE. 
+  
+ Copyright (C) 2013 Apple Inc. All Rights Reserved. 
+  
+ */
+
+#import "AppRecord.h"
+
+@implementation AppRecord
+@end
+

Examples/LazyLoadingDemo/Classes/IconDownloader/IconDownloader.h

@@ -0,0 +1,62 @@
+/*
+     File: IconDownloader.h 
+ Abstract: Helper object for managing the downloading of a particular app's icon.
+ As a delegate "NSURLConnectionDelegate" is downloads the app icon in the background if it does not
+ yet exist and works in conjunction with the RootViewController to manage which apps need their icon.
+  
+  Version: 1.4 
+  
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 
+ Inc. ("Apple") in consideration of your agreement to the following 
+ terms, and your use, installation, modification or redistribution of 
+ this Apple software constitutes acceptance of these terms.  If you do 
+ not agree with these terms, please do not use, install, modify or 
+ redistribute this Apple software. 
+  
+ In consideration of your agreement to abide by the following terms, and 
+ subject to these terms, Apple grants you a personal, non-exclusive 
+ license, under Apple's copyrights in this original Apple software (the 
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple 
+ Software, with or without modifications, in source and/or binary forms; 
+ provided that if you redistribute the Apple Software in its entirety and 
+ without modifications, you must retain this notice and the following 
+ text and disclaimers in all such redistributions of the Apple Software. 
+ Neither the name, trademarks, service marks or logos of Apple Inc. may 
+ be used to endorse or promote products derived from the Apple Software 
+ without specific prior written permission from Apple.  Except as 
+ expressly stated in this notice, no other rights or licenses, express or 
+ implied, are granted by Apple herein, including but not limited to any 
+ patent rights that may be infringed by your derivative works or by other 
+ works in which the Apple Software may be incorporated. 
+  
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 
+  
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 
+ POSSIBILITY OF SUCH DAMAGE. 
+  
+ Copyright (C) 2013 Apple Inc. All Rights Reserved. 
+  
+ */
+
+@class AppRecord;
+
+
+@interface IconDownloader : NSObject
+
+@property (nonatomic, strong) AppRecord *appRecord;
+@property (nonatomic, copy) void (^completionHandler)(void);
+
+- (void)startDownload;
+- (void)cancelDownload;
+
+@end

Examples/LazyLoadingDemo/Classes/IconDownloader/IconDownloader.m

@@ -0,0 +1,131 @@
+/*
+     File: IconDownloader.m 
+ Abstract: Helper object for managing the downloading of a particular app's icon.
+ As a delegate "NSURLConnectionDelegate" is downloads the app icon in the background if it does not
+ yet exist and works in conjunction with the RootViewController to manage which apps need their icon.
+  
+  Version: 1.4 
+  
+ Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple 
+ Inc. ("Apple") in consideration of your agreement to the following 
+ terms, and your use, installation, modification or redistribution of 
+ this Apple software constitutes acceptance of these terms.  If you do 
+ not agree with these terms, please do not use, install, modify or 
+ redistribute this Apple software. 
+  
+ In consideration of your agreement to abide by the following terms, and 
+ subject to these terms, Apple grants you a personal, non-exclusive 
+ license, under Apple's copyrights in this original Apple software (the 
+ "Apple Software"), to use, reproduce, modify and redistribute the Apple 
+ Software, with or without modifications, in source and/or binary forms; 
+ provided that if you redistribute the Apple Software in its entirety and 
+ without modifications, you must retain this notice and the following 
+ text and disclaimers in all such redistributions of the Apple Software. 
+ Neither the name, trademarks, service marks or logos of Apple Inc. may 
+ be used to endorse or promote products derived from the Apple Software 
+ without specific prior written permission from Apple.  Except as 
+ expressly stated in this notice, no other rights or licenses, express or 
+ implied, are granted by Apple herein, including but not limited to any 
+ patent rights that may be infringed by your derivative works or by other 
+ works in which the Apple Software may be incorporated. 
+  
+ The Apple Software is provided by Apple on an "AS IS" basis.  APPLE 
+ MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION 
+ THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS 
+ FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND 
+ OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS. 
+  
+ IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL 
+ OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
+ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
+ INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, 
+ MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED 
+ AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), 
+ STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE 
+ POSSIBILITY OF SUCH DAMAGE. 
+  
+ Copyright (C) 2013 Apple Inc. All Rights Reserved. 
+  
+ */
+
+#import "IconDownloader.h"
+#import "AppRecord.h"
+
+#define kAppIconSize 48
+
+@interface IconDownloader ()
+@property (nonatomic, strong) NSMutableData *activeDownload;
+@property (nonatomic, strong) NSURLConnection *imageConnection;
+@end
+
+
+@implementation IconDownloader
+
+#pragma mark
+
+- (void)startDownload
+{
+    self.activeDownload = [NSMutableData data];
+
+    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:self.appRecord.imageURLString]];
+
+    // alloc+init and start an NSURLConnection; release on completion/failure
+    NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
+
+    self.imageConnection = conn;
+}
+
+- (void)cancelDownload
+{
+    [self.imageConnection cancel];
+    self.imageConnection = nil;
+    self.activeDownload = nil;
+}
+
+#pragma mark - NSURLConnectionDelegate
+
+- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
+{
+    [self.activeDownload appendData:data];
+}
+
+- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
+{
+	// Clear the activeDownload property to allow later attempts
+    self.activeDownload = nil;
+
+    // Release the connection now that it's finished
+    self.imageConnection = nil;
+}
+
+- (void)connectionDidFinishLoading:(NSURLConnection *)connection
+{
+    // Set appIcon and clear temporary data/image
+    UIImage *image = [[UIImage alloc] initWithData:self.activeDownload];
+
+    if (image.size.width != kAppIconSize || image.size.height != kAppIconSize)
+	{
+        CGSize itemSize = CGSizeMake(kAppIconSize, kAppIconSize);
+		UIGraphicsBeginImageContextWithOptions(itemSize, NO, 0.0f);
+		CGRect imageRect = CGRectMake(0.0, 0.0, itemSize.width, itemSize.height);
+		[image drawInRect:imageRect];
+		self.appRecord.appIcon = UIGraphicsGetImageFromCurrentImageContext();
+		UIGraphicsEndImageContext();
+    }
+    else
+    {
+        self.appRecord.appIcon = image;
+    }
+
+    self.activeDownload = nil;
+
+    // Release the connection now that it's finished
+    self.imageConnection = nil;
+
+    // call our delegate and tell it that our icon is ready for display
+    if (self.completionHandler)
+        self.completionHandler();
+}
+
+@end
+