IOS

Ios7 _ How to Implement UIAlertView and listen to click events, ios7uialertview 1. In the viewController. m file, follow the proxy Protocol @ Interface moboViewController () 2. Implement UIAlertView in the-(void) viewDidLoad Method 1-(void)

IOS _ draw a Label with strikethrough A text label with strikethrough, inherited from UILabel The steps for self-painting Code are as follows: 1. Override the drawRect method of the control. 2. first obtain the context object 3. Set the color

IOS summary_group table that can be shrunk (like QQ Contact Interface) VcD4KPHA + signature + CjwvcD4KPHA + signature + CjwvcD4KPHA + signature + CjwvcD4KPHA + signature + Signature cjxwPgo8YnI + ch7vcd4kpha + Cjxicj4KPC9wPgo8cD4KI2ltcG9ydCA =

IOS image processing-fuzzy images Solution:Blur an image Prerequisites:Add CoreGraphics. framework Source code: - (UIImage*) blur:(UIImage*)theImage{ // create our blurred image CIContext *context = [CIContext contextWithOptions:nil];

Set navigation bar properties for ios weibo the next day and add the plus sign button Key points: 1. Add the plus button at the bottom. 2. Set navigation bar properties. 1. Four buttons at the bottom of the weibo button are the same, and the plus

Install OpenFire on ios 1. Download the xmpp Official Website 2. Open Z producer? Http://www.bkjia.com/kf/ware/vc/ "target =" _ blank "class =" keylink "> vcGVuZmlyZS5wa2c8L3A + CjxwPjxpbWcgc3JjPQ =" http://www.2cto.com/uploadfile/Collfiles/20140

Obtain UUID from iOS7 and convert MD5 Recently developed in the project, it is used to obtain UUID to MD5, but iOS7 cannot use the obtained UDID interface (involving privacy). The interface for obtaining MAC addresses is also discarded under iOS7.

IOS development -- call between applications (1), ios development Call steps between iphone applications: 1) register the external interface in the plist File In xcode group & files, expand resources and select info. plist Right-click information

IOS-dispatch_semaphore and NSOperationQueue concurrency, nsoperationqueue Concurrency: Run multiple tasks at the same time. It is also called "colopicity", which refers to the ability to process multiple synchronous activities. Parallel: Two

Transfer Data between ios page jumps ---- use delegate   Mainly used, two classes, one delegate Class a: Class B is called. After Class B is executed, a data must be passed to Class a, and Class a displays the data. 1. delegate, this header file is

Why ios cannot obtain deviceToken The deviceToken cannot be obtained in the following method, -(Void) application :( UIApplication *) application didRegisterForRemoteNotificationsWithDeviceToken :( NSData *) deviceToken {NSLog (@ "deviceToken: % @"

IOS_21 group_ipad neutron controller screen adaptation Finally: Important screen adaptation techniques in iPad, Add a contentView placeholder first, And only set the frame in the viewDidLoad method, Because no matter whether the horizontal

Ios gets the properties and width of the screen. 1. app size, remove the status bar CGRect r = [UIScreen mainScreen]. applicationFrame; R = 320,460 In addition: self. view. bounds. size 2. Screen Size CGRect rx = [UIScreen mainScreen].

How to keep the socket persistent connection and data transmission in the iOS background In the project, tcp persistent connections are used to transmit data to the server. On the IOS platform, due to Apple's background mechanism, the following

IOS random color # Import @ Interface UIColor (RandomColor) + (UIColor *) randomColor; @ end # import "UIColor + RandomColor. h "@ implementation UIColor (RandomColor) + (UIColor *) randomColor {CGFloat hue = (arc4random () % 256/256 .0); // 0.0

IOS multithreading _ NSThread and NSInvocationOperation // Although most of the threads are currently using GCD, we should be familiar with other methods to introduce the simple usage of NSThread and NSInvocationOperation. @

IOS_21 basic use of group_uicollectionview Finally: Code snippet: DealListController inherits from UICollectionViewController Self. view already contains a UICollectionView And the data source and proxy are already the current controller self

Ios's understanding of the anchor There are not many places for anchor in ios, most of which are used in animation. Today, I saw an animation. It was all about the anchor. The concept of anchor came into contact with cocos2d two years ago. I didn't

QQ interface for iOS Compile a QQ interface as requested by the master to help me solve the code problem. Compile a QQ interface with three groups, each of which is attended and shows that the group is online or offline; Let's take a look. This

Simple use of NSThread for iOS Multithreading 1. Thread construction and enabling: (1)_thread1 = [[NSThread alloc]initWithTarget:self selector:@selector(threadOneMethod) object:nil]; _thread2 = [[NSThread alloc]initWithTarget:self