Ben Ford bentford

bentford / gist:4549876

Last active December 11, 2015 05:08

CoreData: merging changes from background context.

	// getting this error?
	// "An observer of NSManagedObjectContextDidSaveNotification illegally threw an exception"

	// observing the notification here
	[[NSNotificationCenter defaultCenter] addObserver:self
	selector:@selector(otherContextDidSave:)
	name:NSManagedObjectContextDidSaveNotification object:nil];


	// FIX: you must mergeChangesFromContextDidSaveNotification: on main thread

bentford / gist:4947715

Created February 13, 2013 20:05

bentford / gist:5558108

Created May 10, 2013 23:07

The easiest way to implement NSFastEnumeration is to build your custom collection on top of NSFoundation collections.

	#pragma mark - NSFastEnumeration
	- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state
	objects:(__unsafe_unretained id [])buffer count:(NSUInteger)len
	{
	return [dictionary.allValues countByEnumeratingWithState:state objects:stackbuf count:len];
	}

	#pragma mark -

bentford / AutoLayoutLabel

Created June 17, 2013 20:49

Shows how to implement a multiline UILabel with Auto Layout. It will dynamically resize to fit whatever horizontal constraints you apply.

	@interface AutoLayoutLabel : UILabel

	@end

	@implementation AutoLayoutLabel
	{
	CGFloat overrideWidth;
	}

	- (id)init

bentford / CustomNavigationViewController.h

Last active December 29, 2015 02:59

	//
	// CustomNavViewController.h
	//
	//
	// Created by Ben Ford on 11/28/12.
	// Copyright (c) 2012 Ben Ford. All rights reserved.
	//

	#import <UIKit/UIKit.h>

bentford / gist:7791449

Last active December 30, 2015 06:48

Showing and hiding the keyboard on iOS

	- (void)registerForKeyboardNotifications
	{

	[[NSNotificationCenter defaultCenter] addObserver:self
	selector:@selector(keyboardWillShow:)
	name:UIKeyboardWillShowNotification object:nil];

	[[NSNotificationCenter defaultCenter] addObserver:self
	selector:@selector(keyboardWillHide:)
	name:UIKeyboardWillHideNotification object:nil];

bentford / StyleUtil.m

Last active August 29, 2015 14:00

Example of a iOS Stylesheet

	//
	// StyleUtil.m

	#import "StyleUtil.h"


	// Normally I'll import UIColor+Hex.h
	// but for sake of the gist, I included the category inline
	// #import "UIColor+Hex.h"