IOS

Currently, the SKD version for iOS is 1.2.1. Here we will mainly discuss some issues with this version and development considerations. 1. bmkmapview is a Baidu map class. When multiple bmkmapview objects are created, these objects share some data (

First, you must set the attributes of mapview: Self. mapview = [[[bmkmapview alloc] initwithframe: cgrectmake (0, 0,100,100)] autorelease]; // We dynamically create a mapview object mapview. showsuserlocation = yes; // The current user location

1. Use bitmap as much as possible. 2. Set quality to "low". If all the materials are bitmaps, the quality setting has little impact on the image quality, but the efficiency can be greatly improved. 3. Use bitmap materials. Do not select "allow

Header file # Include # include # include Source code -(Nsstring *) localipaddress {nsstring * localip = nil; struct ifaddrs * addrs; If (getifaddrs (& addrs) = 0) {const struct ifaddrs * cursor = addrs; while (cursor! = NULL)

========================================================== =============================== Original blog, reprinted please declare the source of Electronic coffee (original id blue rock) ========================================================== ====

From: http://www.cnblogs.com/syxchina/archive/2012/10/14/2723522.html 11.1 IOS positioning service There are three positioning service components in IOS: WiFi location: query the geographical location of a Wi-Fi router. Relatively power-saving, iPod

From: http://blog.sina.com.cn/s/blog_79a120e501018c2n.html Uiview method: -(Void) drawrect :( cgrect) rect Obtain the current context:   Cgcontextref context = uigraphicsgetcurrentcontEXT (); Get the starting point and size of the current bounds:  

Original method: asyncimageview. h: #import @interface AsyncImageView : UIView{     NSURLConnection* connection;    NSMutableData* data;} - (void)loadImageFromURL:(NSURL*)url;@end Asyncimageview. M: #import "AsyncImageView.h"@

Simplified codeTo promote cross-platform development. Typedef acts a bit like # define macro and replaces the synonym with its actual type. Difference: typedefInterpreted during compilationSo let the compiler handleText replacement beyond

1. Develop a static Link Library for iOS Open xcode to create a project and select "cocoa" under the libraryTouch static library and name it "encryptlibrary ". This new static library project has no program files except "encryptlibrary_prefix.pch".

1. Starting with version 3.3 of the GNU Compiler Collection (GCC), make sureThe-fobj-exceptions flag is turned on; 2. The macros ns_during, ns_handler, and ns_endhandler Corresponding to @ try @ catch raise corresponding Throwthe exception macros

Coreplot tips: Set the padding: Graph. plotareaframe. paddingleft + = 5; Graph. plotareaframe. paddingtop + = 5; Graph. plotareaframe. paddingright + = 5; Graph. plotareaframe. paddingbottom ++ = 17.5; Disable zooming: (two

Uiviewcontroller inherits uiresponder, while uiresponder inherits nsobject. uiviewcontroller is the parent class of all view controllers. In MVC mode, uiviewcontroller plays the role of C (Controller) to control views and model operations. If

IPhone program running process Main. M file, the main entry of the IOS Application The two parameters of the main function are command line parameters, which are not used in iOS development. These two parameters are used to be consistent with the

The previous article introduced the basic principles and processing procedures of apns. After introducing the apns mechanism, let's take a look at how to integrate the apns service into our own project. First, log on to our apple developer

In the previous study note "iOS Study Notes 33-xml parsing-kissxml usage", I introduced how to parse data in XML format. Today I will briefly introduce how to parse data in JSON format, JSON data structures are increasingly widely used with

There are two types of message push methods in iOS, one is remote server push (apns). I have mentioned apns: publish in my previous notes. Uilocalnotification * notification = [[uilocalnotification alloc] init]; nsdateformatter * formatter =

There are many ways to parse XML documents on the iOS platform. There are built-in parsing methods in the SDK, but in most cases, they tend to use third-party libraries, the reason is higher resolution efficiency, more convenient to use, on the iOS

Simplenetworkstreams demonstrates how to program on the Socket network to implement a typical scenario of network data transmission in the LAN. One is that the client sends a local image file to the server, the other is that the client downloads

=========== (One) uiimage image proportional scaling ========================================== Picafterzoomwidth: scaled Image Width picafterzoomheight: scaled Image Height (predefined) #define PicAfterZoomWidth 320#define PicAfterZoomHeight 480+ (