Ios url encoding and decoding

1. url Encoding When the HTTP request in IOS encounters Chinese characters, it needs to be converted into a UTF-8, the method used is: Nsstring * encodingstring = [urlstring stringbyaddingpercentescapesusingencoding: nsutf8stringencoding]; 2. URL

Apply For more background time for iOS development tutorials

During IOS application and game development, we often need to perform operations when users switch to the background, such as clearing the memory or saving user data. These operations are generally performed in Applicationdidenterbackground of

IOS 5 beta5 Upgrade tutorial

I. preparations:1. Upgrade ios5 requires iTunes 10.5 Beta or later, and iTunes 10.5 beta1/2/3/4/5: http://www.app43.com/thread-22663-1-1.html. (Note: iOS 5 beta5 must be upgraded with iTunes 10.5 Beta 5 ).2. Download the iOS 5 beta5 firmware.IPhone

Comparison and installation of XML parsing class libraries on iOS platform

In iPhone development, there are many options for XML parsing. the ios sdk provides two class libraries: nsxmlparser and libxml2. There are also many third-party class libraries available, such as tbxml, touchxml, kissxml, tinyxml, and gdataxml.

IOS and iPad icon settings

The icon is a required component of the IOS package. If you do not provide icons of various sizes required by the program, the program may fail to pass verification during uploading and publishing. IOS programs define multiple icons of different

IOS program Startup Process Introduction

Everyone will write the helloworld program when learning about iPhone development. Generally, you generate a project through the wizard and then start the application through the simulator. But do you know the startup process behind it? That is,

About IOS multitasking and Memory Management

I. I have read a lot of questions about whether FY is working on its available memory of MB or MB. I have to worry about how to optimize the available memory.In iOS, task management and memory management are very different from those in windows.

Deep copy and shallow copy (mutablecopy and copy) for iOS development

(If you encounter the problem of deep copy and shortest copy during encoding today, find this article online and repost it by: Yangchen.) before reading this article, first understand the differences between copy and retain, if there are any errors,

IOS Memory Management

The following are some of the common aspects that need attention in memory management that I have summarized. There is no strict data source, and some parts may be ambiguous, incorrect, or missing, you can talk to me about making progress

IOS Platform Installation Package

Document directory Deb . IPA . Pxl Currently, there are three common installation packages on iOS: Deb, IPA, and pxl.Deb format Deb is the installation package for Unix systems (mainly Linux). Based on the TAR package, Deb records the file

Comparison and installation of XML parsing class libraries on iOS platform

In iPhone development, there are many options for XML parsing. the ios sdk provides two class libraries: nsxmlparser and libxml2. There are also many third-party class libraries available, such as tbxml, touchxml, kissxml, tinyxml, and gdataxml.

IOS network packet capture method

During iOS development, various network access problems often occur. In the past, packet capture tools were not used, and many network problems were solved. Now, we have finished. This article provides two methods for packet capture:   1.Network

Summary of differences between iOS 6 and earlier versions

1. Adapt to 4 inch screen adaptation.To adapt to the 4 inch screen, the system creates a default-568h@2x.png image and identifies whether the system supports the 4 inch screen based on the resource. As for other resources, xxx-568h.jpg is not

Encoding and conversion in IOS

Address: http://blog.csdn.net/huifeidexin_1/article/details/7883984 Encoding and conversion in IOS 1. Conversion of UTF-8   Nsstring * Data = @ "Hello, Beijing! "; // Convert to UTF-8 Nsstring * datautf8 =

IOS block syntax and function pointer callback

Code implementation: Implementation of the rootviewcontroller class:View code //// Rootviewcontroller. M // httprequestbyblocktest // Method 1: Implement callback through blocks-essentially a function pointer // Method 2: use the function pointer

The essence of IOS block syntax

The essence of block syntax is: function pointer Block syntax callback is implemented by passing function pointers. The Paster code is fast: Main function:View code #import #import "HomeClass.h"int main(int argc, const char * argv[]){

Use of IOS nil, null, and nsnull

Nil is used to assign values to an object (any object in objective-C belongs to the ID type). null is used to assign values to any pointer. null and nil cannot be exchanged, nil is used to assign values to class pointers (in objective-C, a class is

IOS development network programming HTTP/FTP connection

1. cfhttp You can use cfhttp APIs to create HTTP requests. Generally, HTTP request methods include get, head, put, post, delete, tracr, connect, and options. Cfhttp requests generally take four steps:   Use the cfhttpmessagecreaterequest function

Reachability of IOS Network Monitoring

Download the example from the apple website before use: Click here to download Add reachability. h and reachability. m to your project and reference systemconfiguration. framework. Effect 1:     -(Bool) Application :( uiapplication *) Application

[IOS] Use uiscrollview and uipagecontrol to display translucent help masks

In a recent project, a translucent mask is required to be added to an existing interface, prompting users for the function of each element on the interface.In addition, the mask is not only one page, so you must slide the page between the left and

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