CodeMachine的专栏

取其它app安装路径NSString* iTunesPath = [ [ NSWorkspace sharedWorkspace ]         absolutePathForAppBundleWithIdentifier: @"com.apple.iTunes" ];if( iTunesPath ) {    // iTunes installed, do something}

Here is a quick summary of the segues and an example for each type. You'll want to do more research/experimentation if you decide to implement them.Show - Pushes the destination view controller on

json格式:NSDictionary *dict = @{                           @"name": @"Bob",                           @"cars": @[                                  @{ @"make":@"ford",        

图层每一个UIView都有一个CALayer 改变UIView里Layer的frame,bounds,backgroundColor都会影响UIView添加到父图层的子图层,当只设置bounds时.position为 {0,0} anchorPoint为{0.5,0.5} 子图层的中心位置    CALayer *subLayer = [CALayerl

rvictl -s 87b8622c5748dea98a982aa41026fbbb80dc892287b8622c5748dea98a982aa41026fbbb80dc8922 为udidlo0 gif0 stf0 en0 en1 en2 p2p0 awdl0 bridge0 utun0 en4 rvi0之后rvi0就是设备句柄，可以用tcp

//signal1,signal2有任何一个被订阅,即x等于一个RACTupleRACSignal*signal1 = [RACSignaldefer:^RACSignal*{       NSLog(@"aaaa");        return [RACSignalreturn:@"hello111"];    }];  

[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(systemVolumeChanged:)name:@"AVSystemController_SystemVolumeDidChangeNotification"object:nil];- (void)

sudeMacBook-Pro-3:~ sujian$ networksetup -listnetworkserviceorderAn asterisk (*) denotes that a network service is disabled.(1) Thunderbolt Ethernet(Hardware Port: Thunderbolt Ethernet, De

Set Build Settings -> Apple LLVM 7.1 - Language - Objective C -> Weak References in Manual Retain Release to YES.参考:http://stackoverflow.com/questions/36147625/xcode-7-3-cannot-create-weak-ref

RACChannelTerminal *switchTerminal = self.someSwitch.rac_newOnChannel;RACChannelTerminal *defaultsTerminal = [[NSUserDefaults standardUserDefaults] rac_channelTerminalForKey:@"someBoolKey"];[switch

find ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins -name Info.plist -maxdepth 3 | xargs -I{} defaults write {} DVTPlugInCompatibilityUUIDs -array-add `defaults read /Applicati

很多时候需要在原视图上弹出一个自定义视图让用户确认一些东西. 通常的做法一般使用UIAlertView/UIAlertController. 但是做为自定义它们的风格可能与app不符.思路如下:1) 创建一个UIViewController,背景是一个UIImageView,Autolayout至全屏,图片选用半透明的,目标是为了显示前一页的部分内容2) 通过presentVi

到底什么时候才需要在ObjC的Block中使用weakSelf/strongSelf2014-11-22, SAT | COMMENTSObjective C 的 Block 是一个很实用的语法，特别是与GCD结合使用，可以很方便地实现并发、异步任务。但是，如果使用不当，Block 也会引起一些循环引用问题(retain cycle)—— Block 会 retain

//-replay 总是收取最后的内容,而并不执行signal123456789101112131415161718192021222324 __block int num = 0; RACSignal *signal = [[RACSignal createSignal:^RACDisposable *(i

mkdir -p ~/Library/LaunchAgentscp /usr/local/Cellar/mongodb/2.0.6-x86_64/homebrew.mxcl.mongodb.plist ~/Library/LaunchAgents/launchctl load -w ~/Library/LaunchAgents/homebrew.mxcl.mongodb.plistlaun

//创建textField获得焦点信号,当信号发生时返回@YES RACSignal *didBeginEditingSignal = [[self rac_signalForSelector:@selector(textFieldDidBeginEditing:) fromProtocol:@protocol(UITextFieldDelegate)] mapReplace:@Y

When an Objective-C application starts, it starts by running the function named main(). It doesn't have to be in the file "main.m" but that's how the Xcode wizard sets things up.Inside the wizard-

ColorSync实用工具NSColor *rgb = [NSColorcolorWithDeviceRed:0.2471green:0.2471blue:0.2471alpha:1];

把window的消息委托给AppDelegate,再到AppDelegate.m里加入以下函数- (BOOL)windowShouldClose:(id)sender//close box quits the app{    [NSApp terminate:self];    return YES;}

淡入动画：[NSAnimationContext beginGrouping];[[NSAnimationContext currentContext] setDuration:2.0];[[theSuperview animator] addSubview:theView];[NSAnimationContext endGrouping];淡出动画：

#import @interface SplashWindow : NSWindow- (id)initWithSplashImage:(NSString*)imgfile;@end//SplashWindow.m#import "SplashWindow.h"@implementation SplashWindow- (id)initWithSplashImag

效果图://ColorTextButton.h#import @interface NSButton (ColorButton)- (void)setHoverColor:(NSColor *)textColor;- (void)setNormalColor:(NSColor *)textColor;- (void)setPushColor:(NSColor *)text

今天碰到一个奇怪的问题，使用NSImageView setImage时，UI没有效果。后发现NSImageView的指针是空。后来发现AlbumViewCell *cell = [[AlbumViewCellalloc] initWithNibName:@"AlbumViewCell"bundle:nil];必须先调用一次[cell view],否则IB不会分配AlbumV

Here is a function i whipped up that takes 1 image, and stretches just the middle...-(NSImage *)image:(NSImage *)image leftCapWidth:(float)leftWidth middleWidth:(float)middleWidth rightCapWidt

xcode 4.3 找不到size inspector,见下面方法http://stackoverflow.com/questions/9370072/xcode-4-3-not-presenting-autoresizing-panel-in-size-inspector

char * MYCFStringCopyUTF8String(CFStringRef aString) { if (aString == NULL) { return NULL; } CFIndex length = CFStringGetLength(aString); CFIndex maxSize = CFStringGetMaximumSizeForEnco

CFStringRef        path = CFPreferencesCopyAppValue(CFSTR("LibraryPath"), CFSTR("com.apple.iPhoto"));

最近在一个项目里打算使用pod整合过的ZXing第三方源码,在pod update时会出现

Build settings -> Swift Compiler - VersionYES swift 2.3NO  swift 3.0