IOS

Communication Experiment Between iOs LightBlue and cc2540 BLE Development Board [original, multi-image] Next we will conduct a communication experiment between the iPhone and PC and the Development Board. Only devices after the iPhone 4S (inclusive)

1. Change: The original subview of PageControl is UIImageView, which is now UIView. 2. Solution: re-draw. 3. Code: (because my PageControl is initialized through IB, there is no initialization part in the following code. You can initialize it on

Here we record the whole process of implementing iOS message push. First, apply for a key. VcD4KPHA + fingerprint + pgltzybzcm9 "http://www.2cto.com/uploadfile/Collfiles/20140416/2014041609101140.png" alt = "\"> The following

  As follows:       # Import UIImage + OpenCV. h # import MyViewController. h # import # Import # Import # Import # Import // Aperture value to use for the Canny edge detectionconst int kCannyAperture = 7

Try and catch are rarely used in ios. In short, although Apple provides both NSError and exception Processing mechanisms, Apple recommends that developers use NSError to handle recoverable errors during program running. Exceptions are recommended to

First of all, the following two methods can obtain the mac address of the mobile phone, but there is a limit that can be obtained only on iOS. After iOS7, Apple performed technical processing on sysctl and ioctl. the MAC address returns 02: 00: 00: 0

In the development of iso applications, we need to consider that the height of the 3.5-inch screen of ip4 is different from that of the 4-inch screen of ip5. Common problems include the position of the scroll bar and the block at the bottom. I

//// IdGenerator. m // Copyright (c) 2014 Qingdao toyu Network Technology Co., Ltd. all rights reserved. // # import "IdGenerator. h "static long time_stamp = 0; static long time_stamp_now = 0; static NSMutableArray * temp = NULL; static NSNumber *

The following two methods are available: 1. Use the date component NSDateComponents 2. Use NSString to generate a date // Create a Calendar Object NSCalendar * calendar = [NSCalendarcurrentCalendar]; // Create date component NSDateComponents * dc =

It was quite early that the dynamic library technology emerged, and it was easy and painful for applications to use the dynamic library. Shortly after I got started with iOS development, I found that iOS does not support dynamic library development.

I 've been busy recently. I 've written some articles in my Evernote, but I did not get any hand-written blog. So I haven't written many blogs recently. Today, I received a task to use MusicBrainz to obtain complete information about music. Today,

Darwin Streaming ServerDSS for short. DSS is an open-source Real-Time Streaming Media Playback server program provided by Apple. 1. Download and install Official website address: http://dss.macosforge.org/ Mac OS X Install-> Streaming Server 2.

The original Article is titled Designing for iOS: Graphics & Performance,--- Begin ---In the previous article, we discussed how to implement custom UIButton based on different technologies. Of course, different technologies involve different Code

Generally, if the app uses a web service, we need to prevent data sniffing to ensure data security. The common practice is to use ssl to connect to prevent data packet capture and sniffing. In fact, this is not enough. We also need to prevent man-in-

To put it simply, it is developer-friendly, but not device-friendly (it may secretly occupy traffic and power ).For users, if you have enough bandwidth and are not sensitive to fever, you will enjoy a better application experience.Since iOS 4, the

Cocoa LumberJack is a powerful NSlog and one of the common Cocoa log frameworks. It provides more advanced log functions, such as logging logs to files or networks, and filtering based on log levels (info, debug, warn, and error. As we all know,

-(Void) viewDidLoad { [Super viewDidLoad]; // Operating System NSString * osName = [[UIDevice currentDevice] systemName]; // Operating system version NSString * systemVersion = [[UIDevice currentDevice] systemVersion]; NSLog (@ "OS = % @",

There are two methods for the current program to detect mobile phone shaking. The first method is to override the gesture method in the UIResponder class (which can be simulated by a simulator ), the second method is to use Accelerometer to check

UITableView is a subclass of UIScrollView. Therefore, UITableView can respond to rolling events. To use UITableView, You need to enable the Controller to implement the UITableViewDataSource protocol or let the Controller inherit the

CFUUIDRef theUUID = CFUUIDCreate (NULL ); CFStringRef guid = CFUUIDCreateString (NULL, theUUID ); CFRelease (theUUID ); NSString * uuidString = [(NSString *) guid) stringByReplacingOccurrencesOfString: @ "-" withString: @ ""]; CFRelease (guid );