ios dev salary

decompression, using ziparchiveB:uitapgesturerecognizer Pass ValueC: Custom Self.navigationItem.titleView ViewD: Uiscrollview to achieve infinite scrolling15:ios Development Basics-Fragmentation 15A: Convert a custom object into a NSData databaseB: Add sub-controller, to extract some common content layout, slimming current ViewcontrollerC: Use protocol to isolate the callD: About the use of KVOE: Custom UITableViewCell accessoryview Determine which b

can match anything App ID , but unfortunately it only works for development purposes only in Xcode.Well... To the present, I hope you all go smoothly: You can use Xcode to the app in the real machine to run up. Next we start a new journey. Clear two words in English: DevelopmentDevelopment, that is, you are still in the code debugging phase DistributionRelease, application mature, can be released as a product for everyone to play Next we change the way to create a new one prof

Cgcontextmovetopoint (context, XPos, 0); Cgcontextaddlinetopoint (context, XPos, self.bounds.size.height); XPos + = Linemargin; } while (YPos Cgcontextmovetopoint (context, 0, YPos); Cgcontextaddlinetopoint (context, self.bounds.size.width, YPos); YPos + = Linemargin; } Cgcontextsetlinewidth (context, self.gridlinewidth); Cgcontextsetstrokecolorwithcolor (context, self.gridColor.CGColor); Cgcontextstrokepath (context); } @end Here's how to use it: S

iOS Dev Uinavigation Series three--toolbar UitoolbarIn addition to Uinavinationbar in iOS, there is also a toolbar uitoolbar for us to use, the toolbar and navigation bar is very similar, but the function is more simple, there are uibarbuttonitem buttons in the toolbar, in the first two blogs, A discussion of navigation bars and navigation items, with the followi

= ' Www.XXX. Xxx.zip ';d ownload (URL);//Call the iphone to provide the JS interface Adddownloadtask_ret ();//Get the download results from the iphone download interface, here is a local delay method}// Get iphone Download interface execution download results Functionadddownloadtask_ret () {varobj=getdownloadtaskresult ();//Here is an interface for the iphone, Responsible for returning the results of the current download execution if ('!=obj| | Undefined!=obj) {//Invoke some of the local post-pr

① many iOS apps support preferences such as saving usernames, passwords, font size, and more, iOS offers a standard set of solutions to add preferences to your app② Each app has a Nsuserdefaults instance that accesses preferences③ For example, save user name, font size, automatic loginSave method-(Ibaction) Save {//1With Nsuserdefaults, you have direct access to the software's preferences (library/preferenc

, such as 8.0 NSLog (@ "%@", [[Uidevice currentdevice]systemversion]); Get system name such as iphone OS NSLog (@ "%@", [[Uidevice currentdevice]systemname]); Get the device name, who belongs to the device, namely the registered Apple account, the analog is the iphone Simulator NSLog (@ "%@", [[Uidevice currentdevice]name]); Device models, such as iphone or ipad, are the analog iphone Simulator NSLog (@ "%@", [[Uidevice Currentdevice]model]); can also get battery usage, b

About the effect of the button background picture stretching and not stretchingeffect of stretching:the effect of not stretchingeffect of stretching:the effect of not stretchingTensile principleIn iOS development, there is a way to stretch a picture in the form specified, stretching in a general stretch of 0:Implementation method Create a new category for a uiimage Expand a method for UIImage + (UIImage ) Resizableimage: (NSString ) image

iOS touchMethod://Start contact-(void)Touchesbegan:(nsset *) touches withevent:(uievent *) event;-//move on the screen -(void)touchesmoved:(nsset *) touches withevent:(uievent *) event;-//Touch End -(void)touchesended:(nsset *) touches withevent:(uievent *) event;-//Cancel Touch -(void)touchescancelled:(nsset *) touches withevent:(uievent *) event;Implement the UIView movement-(void) Touchesbegan: (Nsset *) touches withevent: (Uievent *) event {}-(voi

This course focuses on iOS platform mobile app development and game development, mainly on C++,js,lua,python and other game programming languages, iOS platform core technology, Cocos2d-x engine, Crossapp engine, Firefly engine technology, mainly divided into 8 parts:The first part: The basic stage of languagePart Two: iOS Core technology SectionPart III:

The children's shoes, almost all because of the Xcode6 of the problem.Cause: Before Xcode6, the file system created automatically imports the Foundation.h and UIKit.h files for the user, but the latest Xcode6 only imports the Foundation.h file for the user, missing one.So, the solution is: You can import it in the header file section:#import This problem, Google a bit, found a lot.Reference: Http://stackoverflow.com/questions/26169273/cgrect-unrecognized-in-subclasses-of-nsobject"

) This involves a multi-threaded knowledge.Generally we value for single-threaded, that is, the system can only handle one event at a time, such as our picture carousel here, if the user on the page to drag other things, such as our textview here, then the system will focus on this event, no time to take into account our picture carousel, so the picture carousel will not move.We are going to introduce the time Nsrunloop this class. What is it? In fact, read a lot of other people's notes, everyon

Case: (Hold down the option key in the simulator and the zoom gesture will appear when you click the mouse)(1) in VIEWCONTROLLER.M:--scaling things is a uiscrollview other than scrolling, so things that need to be scaled should be placed first in Uiscrollview, such as the imageview here;-While we are zooming, scrollview ourselves do not know which control we want to scale, so scrollview need a proxy to tell it, this agent is generally our controller;--and the controller must obey its protocol to

(1) Phenomenon: In general, the storage of data in a sandbox as a unit, preference data exists in the sandbox path library/preferences inside, but Xcode6 find to find there is nothing at all.(2) Reason: Xcode6 and Xcode5 and before, there is an adjustment on the emulator folder path.(3) Xcode6 's preference file is unified in a folder called Preferences, which has a lot of plist files in preference settings.The path to this file is/users/your user name/library/developer/coresimulator/devices/sim

, according to the name of storyboard to load the inside view.3, if there is no storyboard, then load the xib inside the view. The order at this point is:3.1. If the name of the xib is specified, the view inside the response is loaded;3.2, if the name is not specified, then the controller name prefix is loaded with the same xib view, such as the controller name is Wpviewcontroller, then the first load is called Wpview xib file in the view.3.2. Second, if there is no Xib file called Wpview, load

(1) Effect(2) Source code download (if prompted no small picture, you can find a replacement, see the effect on the line)http://download.csdn.net/detail/wsb200514/8176339(3) Summary:--Because the DrawRect method calls only 1 times, if you need to refresh the drawing, you need to force the call to refresh with Setneedsdisplay.--Learn the use of another "timer", the following two kinds of similar-(void) awakefromnib{ cadisplaylink *link=[cadisplaylink displaylinkwithtarget:self selector: @selec

, with the IF statement, to obtain the system version, the conversion of nsstring to float can be compared, these are no problem.In the end, the core is three words in the IF. In general, we define a "notification settings", and then register the "notification settings" in the "User notification Settings", and registered to the "User notification Settings" in the "Notification settings", are used in the box to let users decide whether to accept this notice.-This "notification setting" is primari

(1) After importing the Abaddressbook library, and then adding the header file, you can use it.-Because this library method is basically the C language style, so the class is basically a CF beginning, such as Cfstringref and Cfarrayref, it and OC NSString and Nsarray similar, can be converted to each other, using __bridge to cast, such as (__ Bridge NSString *) XXX, you can convert the original cfstringref xxx to nsstring type, the advantage is that there is no need to release operations in many

*) touches withevent: (uievent *) event{ uitouch *touch=[touches anyobject]; Cgpoint Point=[touch LocationInView:touch.view]; Create snapping behavior uisnapbehavior *snap=[[uisnapbehavior alloc]initwithitem:self.pinkview snaptopoint:point]; Set snapping properties //Damping settings, 0~1, the larger the value, the better the damping, the smaller the vibration amplitude. snap.damping=0.5; Delete all behaviors (to ensure that each click is valid, or the second time after

attribute//finally don't forget, Modify the window's root view controller Nsarray *arr2=[[nsarray alloc]initwithobjects:nav0,vc4,vc1,vc3,vc2,vc5, nil]; Uitabbarcontroller *tbcon1=[[uitabbarcontroller Alloc]init]; TBCON1.VIEWCONTROLLERS=ARR2; Self.window.rootviewcontroller=tbcon1; Override point for customization after application launch. return YES;}(1) Tabbar icon can only display 5, more than 5 are all co-located to more inside, this more system comes with the icon.(2) Main