IOS

xcode6.0 upgrade to xcode6.1, the program compiles an error, as follows: This is a very common error, many projects after the replacement of the Xcode version, there will be similar problems. Undefined Symbols for Architecture x86_64: "_objc_class_$

1. import Header File #import 2. The object @property (strong,nonatomic) cbcentralmanager* CM; 3. Compliance with Agency methods Cbcentralmanagerdelegate 4. Initialize the object and set the proxy Self. CM = [[Cbcentralmanageralloc]

Compile and use the. A static library of iOS under Xcode The whole process is similar to vs compiler lib Static library new Static library project File-> New-> Project, select Static Library template The project is named Staticlib The library hasn'

Method One: Using the three-party framework masonry [self.loginbtnmas_makeconstraints:^ (Masconstraintmaker *make) { Make.width.equalTo (self.view.mas_width). Multipliedby (0.3); Make.height.equalTo (@30); Make.centerX.equalTo

On the Apple iphone 6s screen parameters I believe that everyone will not be unfamiliar, the size of 4.7 inches, 1334 x 750 resolution so that its PPI reached 326 SP and PX Conversion formula: sp*ppi/160 = pxConclusion:PX = dp*ppi/160DP = PX/(ppi/160

In Reading, the author sums up a few scenarios where the iOS platform can easily cause circular references: Parent-child Mutual holding and entrusting modeSecond, blockThird, NstimerFour, like the self if the array. can also cause circular

Uitabbarcontroller * tab = [[Uitabbarcontrolleralloc]init]; Rootviewcontroller * Rootv = [[Rootviewcontrolleralloc]init]; Uinavigationcontroller * nav = [[Uinavigationcontrolleralloc]initwithrootviewcontroller:rootv]; Tab.viewcontrollers = @[nav];

An iOS development project is nothing more than a pure code layout, xib, or SB layout. So how to achieve the two ways of matching the size of the font. Font Size fit------Pure Code definition a macro is defined as follows: #define Sizescale

Then on an article, automatically generate the framework, this article I put the Shell Automation Packaging IPA organized a bit, I hope you like it, hehe. We suggest that you take a look at the previous article first.

Recently in doing Sina RSS news XML parsing process, encountered a time string conversion problem. The problem is: Wed, 3 APR 2013 04:11:02 GMT (this data is obtained in an XML file) to intercept 04:11:02 in this string. Note: The GMT should pay

I. Overview During iOS development, many Third-party libraries are referenced in the project, and Cocoapods (https://github.com/CocoaPods/CocoaPods) can be used to facilitate the unified management of these third-party libraries. Second, the

Install development Certificate 1. Login to iOS provisioning portal:https://developer.apple.com/ios/manage/overview/index.action with developer account 2. Enter the Certificates management page, click on the lower right page link "Click here to

1, allow remote events to be accepted [[UIApplication sharedapplication] beginreceivingremotecontrolevents];[Self becomefirstresponder]; This sentence is important, otherwise some devices do not respond -(BOOL) Canbecomefirstresponder { return YES; }

The project has a download file function, download needs to be able to view, can not be for each type of file to write a view function bar. The good news is that iOS has a uidocumentinteractioncontroller that can help you tune up the installed apps

The common encryption method is to encrypt the password and save it to the user preferences. The keychain is kept in clear text, but it is not known where it is stored. 1base64 encryption Base64 coding is the foundation of modern

When a developer completes an application and needs a lot of testing, the developer may not have a full version of the mobile phone, this time will need friends around to help test, the following describes the installation method of the program.

function RealizationEnter the registration interface from the login interface to return to the login interface from the registration interface function Realization Idea Search on the internet found that you are using navigation, but the individual

Uiimagepickercontroller *picker = [[Uiimagepickercontroller alloc] init]; [Self Presentviewcontroller:picker animated:yes completion:nil]; Into Uiimagepickercontroller *picker = [[Uiimagepickercontroller alloc] init]; Appdelegate *delegate =

Recently engaged in the analysis of iOS crash log, summed up: The iphone development is going to be a non-stop version, followed by various versions of the crash log. If not properly managed, developers will soon be lost in the crash log and

1. Add debugging Control Add three variables to arguments in executables and set the value to yes. Nszombieenabled Mallocstacklogging Mallocstackloggingnocompact In GDB: (format:Shell malloc_history ) Shell malloc_history 1436 0x5f7fcf0