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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,

that will execute after the action sheet. Since we previously set the action sheet delegate to self, this method will be called, and the parameter of this method buttonindex the number of the button that the user has touched, the button number is from top to bottom, starting from 0, for example, "Yes, I m sure!" This button is numbered 0 because it is the first OK button and the Cancel button is displayed at the bottom. The number of the Cancel button can be obtained directly from [Actionsheet

application can be adjusted according to the size of the screen. Finally, in the first method of appdelegate, add the necessary code before the "return" statement.The code has only 3 sentences, which is equivalent to 3 steps away. 1. Create window;2. set window background; 3. make window visible.The syntax for OC and Swift is slightly different, but the code content is basically the same.The code that OC needs to addSelf.window = [[UIWindow alloc]

Continue to optimize the code in IOS development Fundamentals-Nine (5).Optimization thinking: The dictionary to model part of the data processing operations also get to the model class to achieve, will be Viewcontroller class implementation of the application method to move to the Wjqappinfo class implementation.Instance CodeAdd an out-of-the-box interface to the WJQAppInfo.h , which returns a well-handled model array, defined by the following method

Compiling the Cocos2d-x iOS project in Xcode 6 beta may fail with the following error:Undefined Symbols for Architecture i386:"_fwrite$unix2003", referenced from:_unixerrorhandler in Libcocos2dx ios.a (TIF_UNIX.O)_unixwarninghandler in Libcocos2dx ios.a (TIF_UNIX.O)_empty_output_buffer in Libcocos2dx ios.a (JDATADST.O)_term_destination in Libcocos2dx ios.a (JDATADST.O)_fax3printdir in Libcocos2dx ios.a (TIF

What do you need to pay attention to when you want to fit two different platforms? Today's article summarizes 6 places to learn, including icons, screen density dimensions, design, etc., to collect! 　　1. Do not convert You should not use the same spec UI on Android. iOS has a "physical home key" that allows you to return to the desktop with a single

uploading. // set the location ??? CGSize size = _ imageView. bounds. size; indicator. center = CGPointMake (size. width/2.0, size. height/2.0); [self. imageView addSubview: indicator]; [indicator startAnimating]; // 1. url nsurl * url = [NSURL URLWithString: @ "http://www.bizhiwa.com/uploads/allimg/2012-01/22021207-1-311536.jpg"]; // 2. request-> PUT. The default request operation is GET NSMutableURLReque

Before drawing an image, you first need to get a graphical context object (CGCONTEXTREF), and a cgcontextref stack is maintained in the system before the DrawRect method call of the UI control. A graphical context object is created for the current drawing environment and is placed at the top of the Cgcontextref stack, where the image context object can be obtained through Uigraphicsgetcurrentcontext (). We can also create our own image context objects, Quartz 2d provides the appropriate APIs for

IOS 6 By Tutorials, iosbytutorials Content 1. Chapter 1: Introduction2. Chapter 2: Programming in Modern Objective-C 3. Chapter 3: Beginning Auto Layout4. Chapter 4: Intermediate Auto Layout5. Chapter 5: Beginning UICollectionView 6. Chapter

methods as follows:To re-use the structure, we need to add this code to the Snippets Library. Now add it and select the text you want to add, as follows:Use the left mouse button to add it to the Code Snippets Gallery. When you're done adding, you'll see a default "My Code Snippet" name. You can edit the name, or you can add a description and shortcut keys for it.Find your FileQuickly find the files you need with CMD + SHIFT + O key combination.Press CMD + SHIFT + O to open quickly window, type

addOperation:request];networkQueue.uploadProgressDelegate=self;[networkQueue go]; In addition, due to a Bug in CFNework, the exact upload/download progress of Data smaller than KB cannot be tracked.70. how do I set the background color of UIWebView to transparent?Setting the Background attribute of UIWebView in IB to Clear Color does not make the Background transparent. To achieve this goal, you need to use the following two sentences: [webView setBackgroundColor:[UIColor clearColor]];[webView

delegate agent to handle these system eventsDelegate events that can be handled include:Application lifecycle events (such as program startup and shutdown)System events (such as incoming calls)Memory warning... ...A uiapplicationmain function is executed in the main function.int uiapplicationmain (int argc, char *argv[], nsstring *principalclassname, NSString *delegateclassname);ARGC, argv: direct transfer to Uiapplicationmain for related processing can bePrincipalclassname: Specifies the appli

*) Gesturerecognizer Shouldrecognizesimultaneouslywithgesturerecognizer: (Uigesturerecognizer *) Othergesturerecognizer3 {4 returnYES;5 }6 7 whether to allow triggering gestures to start8-(BOOL) Gesturerecognizershouldbegin: (Uigesturerecognizer *) Gesturerecognizer9 {Ten returnNO; One } A - whether to allow the touch of the phone to be received (can control the range of touch) --(BOOL) Gesturerecognizer: (Uigesturerecognizer *) Gesturerecog

IOS Programmer Level 6 Exam (answer and explanation) I'm the preface.1. What does the following code output? @implementationson: father -(id) init { Span class= "line" > self = [super init]; if (self) { Answer: All output "Son"Explanation: OBJC super is a compiler identifier, not the same as self an object, encountered in the super metho

http://blog.sunnyxx.com/2014/03/06/ios_exam_0_key/I'm the preface.Last sent an iOS programmer Level 6 exam questions, but also in the continuous replenishment, open a post supporting writing answers and explanations. 1. What does the following code output? 123456789101112 @implementation son father-(ID) init{ span class= "keywor

IOS Development notes-Basic UI (6) Photo browser (controls are lazy loaded and data is separated from code using Plist files), iosplist Use UIImageView, UILabel, and UIButton to implement a comprehensive case study Function Analysis(1) Click the arrow to switch the sequence number, image, and description. (2) If the first image is displayed, the left arrow can