hhyyy9’s gists

hhyyy9 / UILabelStrikethrough.h

Created April 8, 2014 10:14 — forked from mikaelbartlett/UILabelStrikethrough.h

	@interface UILabelStrikethrough : UILabel {
	int xOffset;
	int yOffset;
	int widthOffset;
	int stroke;
	UIColor* strokeColor;
	}
	@property (nonatomic) int xOffset;
	@property (nonatomic) int yOffset;
	@property (nonatomic) int widthOffset;

hhyyy9 / gist:4225118

Created December 6, 2012 15:07

ntohs, ntohl, htons,htonl的比较

	最近的工作是进行程序由 SUN SPARC 向 Intel X86 移植的工作，多数问题都出现在网络字节序的部分，所以拿出来在这部分工作中使用频率较高的几个接口区分比较下：）

	ntohs =net to host short int 16位

	htons=host to net short int 16位

	ntohl =net to host long int 32位

	htonl=host to net long int 32位

hhyyy9 / gist:4224875

Created December 6, 2012 14:39

位定义

hhyyy9 / gist:3802869

Created September 29, 2012 01:39

当开始输入文字以及完成文字输入时，变换text field的背景。


	-(BOOL) textFieldShouldBeginEditing:(UITextField *)textField{
	[textField setBackground:[UIImage imageNamed:@"ctext_field_02.png"]];
	return YES;
	}

	-(void) textFieldDidEndEditing:(UITextField *)textField{
	[textField setBackground:[UIImage imageNamed:@"ctext_field_01.png"]];
	}

hhyyy9 / gist:3802858

Created September 29, 2012 01:30

在调用 removeFromSuperview 的时候，当前视图会突然消失,这样显得很不友好。这段代码能够让视图慢慢消失。

	//
	// UIView+JTRemoveAnimated.h
	//
	// Created by james on 9/1/11.
	// http://ioscodesnippet.tumblr.com/
	//
	@interface UIView (JTRemoveAnimated)

	- (void)removeFromSuperviewAnimated;

hhyyy9 / gist:3802855

Created September 29, 2012 01:29

程序内调用本地打电话功能-make a phone call

	- (void)makeCall:(NSString *)number
	{
	NSString *txt = number;
	NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"[0-9]{4}[-]{0,1}[0-9]{4}?" options:NSRegularExpressionSearch error:nil];
	NSTextCheckingResult *result = [regex firstMatchInString:txt options:0 range:NSMakeRange(0, [txt length])];
	NSString *cleanedString = [[[txt substringWithRange:[result range]] componentsSeparatedByCharactersInSet:[[NSCharacterSet characterSetWithCharactersInString:@"0123456789-+()"] invertedSet]] componentsJoinedByString:@""];
	NSString *escapedPhoneNumber = [cleanedString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
	NSURL *telURL = [NSURL URLWithString:[NSString stringWithFormat:@"tel://%@", escapedPhoneNumber]];
	[[UIApplication sharedApplication] openURL:telURL];
	}

hhyyy9 / gist:3802852

Created September 29, 2012 01:28

当程序崩溃（Crash）时发出通知

hhyyy9 / gist:3802850

Created September 29, 2012 01:26

从URL加载图像

	+ (UIImage ) imageFromURLString: (NSString ) urlstring
	{
	// This call is synchronous and blocking
	return [UIImage imageWithData:[NSData
	dataWithContentsOfURL:[NSURL URLWithString:urlstring]]];
	}

hhyyy9 / gist:3802846

Created September 29, 2012 01:26

返回图像的灰度模式

	+ (UIImage ) grayscaleImage: (UIImage ) image
	{
	CGSize size = image.size;
	CGRect rect = CGRectMake(0.0f, 0.0f, image.size.width,
	image.size.height);
	// Create a mono/gray color space
	CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceGray();
	CGContextRef context = CGBitmapContextCreate(nil, size.width,
	size.height, 8, 0, colorSpace, kCGImageAlphaNone);
	CGColorSpaceRelease(colorSpace);

hhyyy9 / gist:3802840

Created September 29, 2012 01:24

更改导航条上返回按钮的标题

	UIBarButtonItem *barButtonItem = [[UIBarButtonItem alloc] init];
	barButtonItem.title = @"buttonName";
	self.navigationItem.backBarButtonItem = barButtonItem;
	[barButtonItem release]

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