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Location Services not working in iOS 8
...mmended approach is to conditionally compile using the SDK defined macro __IPHONE_OS_VERSION_MAX_ALLOWED (#if __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000)
– Steven Kramer
Sep 22 '14 at 19:46
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程序员之网络安全系列（五）：数字证书以及12306的证书问题 - 更多技术 - ...
...？根证书自己证明自己，这时候我们用户就需要自己选择是否相信某个根证书。
根证书是整个证书体系安全的根本。如果某个证书体系中，根证书不再可信了，那么所有被根证书所信任的其它证书，也就不再可信了。
证...
Generating random numbers in Objective-C
....3. In case you're supporting older devices, you should add a check: #if __IPHONE_OS_VERSION_MIN_REQUIRED >= __IPHONE_4_3 If it fails the check, fall back to another solution.
– Ron
Jan 20 '12 at 0:39
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Opening the Settings app from another app
...en Settings App using openURL?
Programmatically opening the settings app (iPhone)
How can I open the Settings app when the user presses a button?
iPhone: Opening Application Preferences Panel From App
Open UIPickerView by clicking on an entry in the app's preferences - How to?
Open the Settings...
Renew Provisioning Profile
...d dragged it onto my XCode Icon. (I had Xcode running already, and had the iphone plugged in). The new profile showed up, and I deleted the old one (being careful because they had the same name, but when you mouse over them the expiration date appears).
I think because I had the phone plugged in a...
Memcached下一站：HandlerSocket！ - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了：
mysql> SHOW PROCESSLIST;
也可以通过查询刚配置的端口是否已经被MySQL占用来确认是否安装成功：
shell> lsof -i :9998
shell> lsof -i :9999
完活儿！现在你的MySQL已经具备NoSQL的能力了！
实战
首先创建一个测试用的表：
CREATE TAB...
When should I release objects in -(void)viewDidUnload rather than in -dealloc?
...hod is only available in OS3 and above. Dealing with the same situation in iPhone OS 2.x was a real pain!
Update July 2015: It should be noted that viewDidUnload was deprecated in iOS 6 because "Views are no longer purged under low-memory conditions and so this method is never called." So, the mode...
Is it possible to install iOS 6 SDK on Xcode 5?
Xcode 5 has a preferences pane that allow one to download iPhone 6.1 simulator, however I can't find a place where it allows downloading of iOS 6 SDK, thus it is not possible to set the active SDK to iOS 6 when developing with Xcode 5. Is there a workaround that would allow Xcode 5 to install iOS 6 ...
How to increase font size in the Xcode editor?
...ve gulped down a 6-pack and has declared XCode as the worst IDE ever!!!! - iphonedevsdk.com/forum/iphone-sdk-tools-utilities/… <br>Here thread ends with a suggestion is to reinstall the Leopard cos the Updates might have corrupted the fonts!!!! - iphonedevsdk.com/forum/iphone-sdk-development...
Why NSUserDefaults failed to save NSMutableDictionary in iOS?
...enting the NSCoding Protocol? This will allow you encode and decode on the iPhone with two simple methods that are implemented with the NSCoding. First you would need to adding the NSCoding to your Class.
Here is an example:
This is in the .h file
@interface GameContent : NSObject <NSCoding>...