Reading and Writing files in IOS

In iOS, Apple has encapsulated a class and opened the corresponding IPA. The corresponding class is nsfilemanager and the file management class. Instantiation: Nsfilemanager * manage = [nsfilemanager defaultmanager]; Create a file directory

Xmppframework iOS development (4) getting messages and friends offline

Original address: xmppframework iOS development (4) Message // Receive the message-(void) xmppstream :( xmppstream *) sender didreceivemessage :( xmppmessage *) Message {// nslog (@ "message = % @", message ); // message content nsstring *

IOS usage accumulation-nsprocessinfo class

+ (Nsprocessinfo *) processinfo // return the information of the current process-(nsarray *) Arguments // return the parameters of the current process in the form of an nsstring object array-(nsdictionary *) environment // return the dictionary of

HTTP for iOS online playback

Recently, I have been studying the application of online playback, The main idea is 1. Knowledge about cfnetwork. framework is required for HTTP data download. 2. Learn about audio file stream service and audio queue service in audiotoolbox.

Get installed programs on iOS devices

There are three situations: 1. For devices after jailbreak, you can obtain the complete list, which is convenient. The method is as

AR for iOS-getting started

1. Private API Add the header file: Extern "C" cgimageref uigetscreenimage (); Add when using: Cgimageref screenref = uigetscreenimage (); 2. Camera callback 1. Generate a capture session instance Ii. Implement

Introduction and use of new APIs in iOS 5

Original address: introduction and use of new APIs in iOS 5 1. uistepper UIStepper *stepper = [[UIStepper alloc] initWithFrame:CGRectMake(200, 100, 0, 0)]; [stepper sizeToFit]; stepper.value = 0; stepper.minimumValue = 0;

IOS 6 Social application development-Sina Weibo

Original address: iOS 6 Social application development-Sina Weibo 1. Add framework. 2. Import the header file. #import #import 3. Make sure that the account for the social networking application is configured in "Settings" (take Sina Weibo as

Opencv for iOS Study Notes (7)-gesture marking Simulation

Original address: opencv for iOS Study Notes (7)-gesture marking Simulation Previously, we have obtained a precise marking corner point. We can simulate the transformation between the mark in the camera and the 3D space. In this process, we will

IOS 6 Apple map app (mapkit)-open external app

Original address: iOS 6 Apple map app (mapkit)-open external app In iOS 6, Apple changed Google map to its own map, which looks good. : Lower than iOS 6 (Google map web) IOS 6 Implementation Code Predefine Declaration for importing and

Opencv for iOS Study Notes (3)-camera

Original address: opencv for iOS Study Notes (3)-camera Video capturing and Ar visualization are indispensable for augmented reality applications. In the video capture phase, frames are received from the camera and then transmitted to the

IOS extension mechanism objc_setassociatedobject, objc_getassociatedobject

Example: First import the header file: # import Set static constants: static char alertinfokey; -(Ibaction) showalertaction :( ID) sender { Uialertview * Alert = [uialertviewAlloc] initwithtitle: @ "title"Message: @ "Warn"Delegate:

Text replication in iOS development

Original address: Text replication for iOS development This article is based on Rich Text: dtcoretext # Import # import // Add this framework @ interface uipasteboard (attributedstring)-(void) setattributedstring :( nsattributedstring *)

Required website for iOS development

Original address: Required URL for iOS development Basics-developer guide for iOS mobile app development Chinese edition | objective-C basics | C/C ++ basics | C ++ tutorials Map-amap api | Baidu Map Upload-Developer Center | iTunesConnect |

Xmppframework iOS development (1) XMPP Introduction

Original address: xmppframework iOS development (1) XMPP: The extensible messaging and presence protocol Chinese Full name: extensible communication and representation Protocol Introduction: extensible communication and representation protocol

IOS shake function implementation

When we use it, do we feel that the shake function is dazzling? Is it difficult to implement it? In fact, otherwise, these are all encapsulated by Apple, which provides a very simple portal for me. These methods are available in uiresponder: -

IOS check version updates

Scenario When we use an application, when we open the application, if the application has a new version, we can often give a prompt in the application, whether to update the application. So let's take a look at how version updates are

IOS calls and returns to the application

When we call this function, we often call this method: [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://xxxxx"]]; However, after the function is implemented, you cannot return to your application after the call is completed.

IOS nsdateformatter date and time format processing usage

I recently encountered a problem of time String Conversion during XML parsing of Sina RSS news. The problem is: Wed, 3 Apr 2013 04:11:02 GMT (this data is obtained in the XML file) to extract 04:11:02 from this string. Note: For GMT, note that

IOS asmediafocusmanager thumbnail Preview

During the Sina Weibo client process, a third-party library was accidentally found on the internet due to the problem of thumbnail enlargement and display of Weibo content. It is very suitable for this job. After a little research, it is probably

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