Errata

delegate is not set for table view so the disclosure button does nothing when clicked. Solution:
self.myTable.delegate = self and make the controller adopt the UITableViewDelegate protocol

I don't see how this query can work. You are including kSecAttrSynchronizable in the query used for finding the items to delete. Since you are deleting them in order to make them synchronizable, the query will not find them because they are not yet synchronizable (they don't yet have the kSecAttrSynchronizable key);

Along with Ilya's post (page 187, on Oct 23, 2013), the view squareViewAnchorView does not appear to be necessary for this code to work. All references can be removed from the code and it will still work the same.

Note: I posted that re-sizing the frame appears to work, however, it does not work in all cases I tried later. Looks like there are a number of issues with iOS7 and UITextView.

The recipe calls for using contentInset to compensate for the keyboard. The code written as-is does not work for iOS7. Based on the research I did, Apple switched from using WebKit to TextKit for UITextView and a few bugs came along in the process. Using contentInset does not work; re-sizing the frame appears to work.

This solution appears to be pre-Xcode 5. With Xcode 5, when checking Use Autolayout, no constraints are created. The developer can create the constraints at any time by control-dragging from the view object, or using the Resolve Auto Layout Issues and/or Pin buttons.

Discussion (page 218) 2nd paragraph, creating a new Single View Application project in Xcode 5 does not create a .xib file. This would have to be done with File/New/File, selecting Objective-C class, then checking "With XIB for User Interface". For both an XIB file and a Storyboard File, dragging a button onto the center of the screen until the IB guidelines appear on the screen will not create constraints in Xcode 5.

Reports error when code is pasted into @implementation of View controller:

@implementation CkrsViewController
- (void) viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];

/* Capture the screenshot */
UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, YES, 0.0f);
if ([self.view drawViewHierarchyInRect:self.view.bounds]){
NSLog(@"Successfully draw the screenshot.");
} else {
NSLog(@"Failed to draw the screenshot.");
}
UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

/* Save it to disk */
NSFileManager *fileManager = [[NSFileManager alloc] init];
NSURL *documentsFolder = [fileManager URLForDirectory:NSDocumentDirectory
inDomain:NSUserDomainMask
appropriateForURL:nil
create:YES
error:nil];
NSURL *screenshotUrl = [documentsFolder
URLByAppendingPathComponent:@"screenshot.png"];

NSData *screenshotData = UIImagePNGRepresentation(screenshot);

if ([screenshotData writeToURL:screenshotUrl atomically:YES]){
NSLog(@"Successfully saved screenshot to %@", screenshotUrl);
} else {
NSLog(@"Failed to save screenshot.");
}

}

This is the reported error text

No visible @interface for 'UIView' declares the selector 'drawViewHierarchyInRect:'

Is there something needed in a .h file or maybe must use a storyboard?

Placed a custom button with image on the storyboard and still error remains?

he referenced source code cannot be downloaded due to the following two errors:

1. referred to from my ORA download page:

https://github.com/oreillymedia/iOS_7_Programming_Cookbook

Nothing there but a REAME.md FILE.

2. https://github.com/oreillymedia/iOS7_programming_cookbook

ERROR 404 (page not found)

Please fix this ASAP so I can download the promised source code.

2 Nov 2013

I have just been informed by ORA that the source code can actually be found a (and I was able to access it)t:

https://github.com/vandadnp/ios-7-programming-cookbook-source-codes

In IOS 7 we get error when will change orientation of device screen:

- (NSInteger)numberOfSectionsInCollectionView :(UICollectionView *)collectionView{
return [self allSectionColors].count;
}

The correct version of this

- (NSInteger)numberOfSectionsInCollectionView :(UICollectionView *)collectionView{

[self.collectionView.collectionViewLayout invalidateLayout];
return [self allSectionColors].count;
}

The referenced source code cannot be downloaded due to the following two errors:

1. referred to from my ORA download page:

https://github.com/oreillymedia/iOS_7_Programming_Cookbook

Nothing there but a REAME.md FILE.

2. https://github.com/oreillymedia/iOS7_programming_cookbook

ERROR 404 (page not found)

Please fix this ASAP so I can download the promised source code.

The method signature has changed, and the former call causes an error -

self.attachmentBehavior = [[UIAttachmentBehavior alloc]
initWithItem:self.squareView
point:self.squareViewAnchorView.center
attachedToAnchor:self.anchorView.center];

No we have to write so -

self.attachmentBehavior = [[UIAttachmentBehavior alloc]
initWithItem:self.squareView
attachedToAnchor:self.anchorView.center];

at prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender method, code line:

[nextController setText:self.textField.text];


gives the following error: "No visible @interface for SecondViewController declares the selector setText:self:"

This method should also be declared at header file.

It says: "Now place another view controller from the Object Library onto your storyboard and place a button and a text field on the first view controller as well."

Placing another view controller from the Object Library onto the storyboard will not automatically create the .h and .m files for that view. At this point, it is not possible to follow this recipe.

The method "roundedValuesInRect" it's missing.
The program doesn't compile.

- (CGRect) roundedValuesInRect:(CGRect)paramRect{
paramRect.origin.x = round(CGRectGetMinX(paramRect));
paramRect.origin.y = round(CGRectGetMinY(paramRect));
paramRect.size.width = round(CGRectGetWidth(paramRect));
paramRect.size.height = round(CGRectGetHeight(paramRect));
return paramRect;
}

xCode 5.0 does not display the selected image for segmented control.

Ch01, page 03

bullet 04 says: "...and ensure that the Use Storyboards and the Include Unit Tests checks are not enabled, and that the Use Automatic Reference Counting check is enabled..."

Those options are not available in xcode 5. When selecting the device family, there are no other option available and every application is created with Storyboard unless "Empty Application" is selected as the project template.

The worst thing is that page 02, 5th paragraph says that: "To reproduce the examples, follow the instructions in 'Creating and Running Our First iOS App' on page 2." Therefore it will be complicated to get the examples running as expected since Storyboarding changes the whole design & programming of an application. This same issue comes from the previous iOS 6 cookbook edition.