IOS

IOS macro compilation methods: the first method is suitable for modifying the original debugging code # ifdef DEBUG # define NSLog (...) NSLog (_ VA_ARGS _) # define debugMethod () NSLog (@ "% s", _ func _) # else # define NSLog (...) # Define

Cocos2d has been being honed over the past few days, and many things have been digested. You can basically grasp the game of a hand-written company. Today, I will share some important points with you to share my experience, provide new children's

  EXC_BAD_ACCESS This exception is usually caused by the previous error code and won't be interrupted immediately, but is caused by exceptions of other normal running codes, so it is difficult to debug. Common causes include: Release double

@ Implementation BrightnessController // MyCreateBitmapContext: Source based on Apple Sample CodeCGContextRef MyCreateBitmapContext (int pixelsWide,Int pixelsHigh){CGContextRef context = NULL;CGColorSpaceRef colorSpace;Void * bitmapData;Int

First, customize the left return button of UINavigationBar [Cpp] UIButton * backBtn = [[UIButton alloc] initWithFrame: CGRectMake (0, 0, 71.5, 44)];// UIButton * backBtn = [[UIButton alloc] initWithFrame: CGRectMake (0, 0,200, 44)]; [BackBtn

Method 1:Self. title = @ "title text ";OrSelf. title = [[[NSBundle mainBundle] infoDictionary] objectForKey: @ "CFBundleName"]; Method 2:Self. navigationItem. title = @ "title text" Method 3:Self. navigationItem. titleView = xxxView;Specifically,

// Add a keyboard listening event [[Nsnotifcencenterdefacenter] addObserver: selfselector: @ selector (keyboardWasShown :) name: UIKeyboardDidShowNotificationobject: nil];   # Pragma mark scroll scrollview so that the hidden textfield is displayed

Create a project named KeyBoard. I use xcode4.2!Drag four labels and four textfields in the MainStoryboard. storyboard file, as shown in the following figure:Filled content:The Done keyboard disappears !!First, let's talk about the following

-(Void) hideTabBar :( BOOL) hidden {[UIView beginAnimations: nil context: NULL];[UIView setAnimationDuration: 0];For (UIView * view in self. tabBarController. view. subviews){If ([view isKindOfClass: [UITabBar class]){If (hidden ){[View setFrame:

There are four main steps to compile a social network client program.   Next we will introduce the process as follows: 1. Introduce the Accounts and Social frameworks The Accounts and Social frameworks need to be introduced in the process. The

1. Change the wallpaper: Write the image to this directory,/var/mobile/Library/LockBackground.jpg, and kill the Springboard. 2. Add the program to the notification center (iOS5 or above) and put the. bundle file in the System/Library/WeeAppPlugins

I. Principles of message pushing: Before implementing message push, we should first mention several push-related concepts, such:1. Provider: the server that provides Push for the application on the specified IOS device. (If the application on the

I wrote a widget similar to the Warcraft GEO map function. For example, you have a scrollView that can be zoomed in and out. It will zoom in and out, click the button in it, and perform other operations. This small map control. It will be

A block is a special code block that captures the context. A block can access variables defined outside a block. When used in a block, it creates a copy for each scalar variable in its scope. If self owns a block and then changes the instance

IOS is currently the most secure and reliable mobile platform, but since it is software, it will not be invincible. Researchers at Georgia Tech Information Security Center recently claimed they have recently discovered major iOS vulnerabilities.

  UIButton *btn=[[UIButton alloc]initWithFrame:CGRectMake(60, 60, 200, 60)]; btn.backgroundColor=[UIColor greenColor]; [btn setTitle:@"btn1" forState:UIControlStateNormal]; [self.view addSubview:btn];       UIButton *btn2=[UIButton

1, assign: Simple assignment without changing the index count Assume that you allocated a piece of memory with malloc and assigned its address to pointer a. Then you want pointer B to share the block of memory, so you assign a value to assign) b. At

Understanding IOS configuration file 1. Introduction: network devices (routers and switches) can work normally only with two types of software: the operating system IOS and configuration file configuration files contain IOS software commands, these

CISCO 6509 upgrade IOS Master/Slave Control Board1: configure the TFTP server to find the updated IOS path. 6509 # copy tftp sup-bootflash: (migrate to IOS to sup-bootflash of the main engine) Address or name of remote host []? 10.1.1.2Source

IOS features of Cisco devices2811C has spservices and advipservices IOS. The features of advipservices include pptp with mppe, but spservices do not. Unfortunately, I bought spservices (show version shows the information .)Then I found many