Zeng Yun zengyun-hacker

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iOS Engineer, Curious about the world

zengyun-hacker / .arclint

Created November 8, 2016 09:54

arclint for ios

zengyun-hacker / gist:2c0eb3515f2ebf850e22

Created October 16, 2015 08:39 — forked from snikch/gist:3661188

Find the current top view controller for your iOS application

	- (UIViewController *)topViewController{
	return [self topViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
	}

	- (UIViewController )topViewController:(UIViewController )rootViewController
	{
	if (rootViewController.presentedViewController == nil) {
	return rootViewController;
	}

zengyun-hacker / gist:7336bddb8a18937f80ba

Created February 7, 2015 09:40

how to get file name when saving a image

	UIImage *image; //The image would be save
	ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
	[library writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)image.imageOrientation completionBlock:^(NSURL assetURL, NSError error) {
	if (!error) {
	[library assetForURL:assetURL resultBlock:^(ALAsset *asset) {
	ALAssetRepresentation *defaultRep = [asset defaultRepresentation];
	NSString *fileName = [defaultRep filename];
	} failureBlock:^(NSError *error) {
	}];
	}

zengyun-hacker / 不分心系列

Last active August 29, 2015 14:07

让你认真工作学习不会分心的hosts列表

zengyun-hacker / screenshot

Created May 12, 2014 05:53

make a screenshot and save it into UIImage

	UIWindow *window = [UIApplication sharedApplication].keyWindow;
	if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
	UIGraphicsBeginImageContextWithOptions(window.bounds.size, NO, [UIScreen mainScreen].scale);
	}
	else {
	UIGraphicsBeginImageContext(window.bounds.size);
	}
	if ([window respondsToSelector:@selector(drawViewHierarchyInRect:afterScreenUpdates:)]) {
	[window drawViewHierarchyInRect:window.bounds afterScreenUpdates:YES];
	}

zengyun-hacker / draw line

Created October 7, 2013 03:32

draw line

	- (void)drawRect:(CGRect)rect {
	[super drawRect:rect];

	CGContextRef context = UIGraphicsGetCurrentContext();
	CGContextSetStrokeColorWithColor(context, [UIColor redColor].CGColor);

	// Draw them with a 2.0 stroke width so they are a bit more visible.
	CGContextSetLineWidth(context, 2.0);

	CGContextMoveToPoint(context, 0,0); //start at this point

zengyun-hacker / play audio

Last active December 23, 2015 19:19

	/*
	* attention: before this you should have a AVAudioPlayerDelegate
	*/

	//init
	NSString *audioPath = [[NSBundle mainBundle]pathForResource:@"audio" ofType:@"mp3"];
	NSURL *audioURL = [NSURL fileURLWithPath:audioPath];
	NSError *error;
	AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:audioURL error:&error];
	if (error) {

zengyun-hacker / set navigation bar background image

Last active December 23, 2015 17:19

set navigation bar background image

zengyun-hacker / ios macro

Created September 23, 2013 08:55

common macro in iOS



	#pragma mark - Log
	//debug log
	#ifdef DEBUG
	# define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__);
	# define DLogRect(rect) DLog(@"%s x=%f, y=%f, w=%f, h=%f", #rect, rect.origin.x, rect.origin.y,rect.size.width, rect.size.height)
	# define DLogPoint(pt) DLog(@"%s x=%f, y=%f", #pt, pt.x, pt.y)
	# define DLogSize(size) DLog(@"%s w=%f, h=%f", #size, size.width, size.height)
	# define DLogColor(_COLOR) DLog(@"%s h=%f, s=%f, v=%f", #_COLOR, _COLOR.hue, _COLOR.saturation, _COLOR.value)

zengyun-hacker / Customize title view of navigation bar

Created September 23, 2013 08:54

Customize title view of navigation bar

	#define FONT(x) [UIFont systemFontOfSize:x]
	#define LOADIMAGE(file,ext) [UIImage imageWithContentsOfFile:[[NSBundle mainBundle]pathForResource:file ofType:ext]]

	//set text title
	- (void)setNavigationTitle:(NSString *)title{
	UILabel *titleLabel = [[UILabel alloc] init];
	titleLabel.text = title;
	titleLabel.font = FONT(13);
	titleLabel.textColor = [UIColor whiteColor];
	self.navigationItem.titleView = titleLabel;

	//call this in didFinishLaunchingWithOptions of appdelegate
	[[UINavigationBar appearance] setBackgroundImage:#background image# forBarMetrics:UIBarMetricsDefault];