IOS

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

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.

Author: zyl910 During iOS development, you sometimes need to add uilabel and other controls to the uitoolbar. I have seen a lot of materials to complete this function in code mode, which is not easy to maintain. So I made some exploration and found

The ios sdk provides two different APIs for synchronous and asynchronous requests for HTTP requests. You can also use get or post methods. First, we will understand the simplest synchronous GET request. To learn how to use these APIs, The mynotes

Custom Cells When the cell styles provided by Apple cannot meet our business needs, we need to customize cells. Before iOS 5, custom cells can be implemented in two ways: code implementation and XIB technology implementation. It is relatively simple

Book connection, application cases We use uitextfielddelegate as an example to describe how to use the delegate. Uitextfielddelegate is the delegate of the control uitextfield. The delegate of the control is mainly responsible for responding to

Implementation Based on paging navigation   After iOS 5, you can use the page controller (uipageviewcontroller) to construct an application similar to the e-book effect, which is called a page-based application. A paging application has many related

We run the program. If the network speed is slow, black screen will appear during the query until the request ends, so that the user experience is poor. Therefore, synchronous requests are generally used only in a child thread, rather than in the

The following are four FAQs about git configuration and usage in xcode.   Question 1: How do I create a code library in xcode and add and submit code to the code library? Question 2: How can I submit the push to the remote server code library in

After the Bonjour service on the server is successfully published, the client can use nsnetservice to parse the service. After successful resolution, the client can obtain the details of the communication data, such as the IP address and port. First,

The book "iOS network programming and cloud application best practices" was officially released. (Dangdang and Amazon can book it)   Dangdang presales Amazon presales Before the official release of this book, let's share the source code and trial

Before uploading an application to the App Store, We need to compress the compiled binary files and resource files into a compressed package. The compression format is zip. On the homepage, find the compilation location, which is very important and

Create empty application and add homeviewcontroller Homeviewcontroller. H code# Import # import @ interface homeviewcontroller: uiviewcontroller {mpmovieplayerviewcontroller * playerviewcontroller;}-(ibaction) buttonclicked :( ID) sender; @

1. Create an empty application and add a view. The XIB design is as follows:   2. when using uiimagepickercontroller, you must specify several very important attributes: Specify the source type (determine whether the source is available before

Explanation 1: 1. Static nsstring * celltableidentifier = @ "celltableidentifier ";Uitableviewcell * cell = [tableview dequeuereusablecellwithidentifier:Celltableidentifier];If (! Celll ){Cell = [[[uitableviewcell alloc]Initwithstyle:

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 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[]){

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

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

Nslog (@ "Hello, world! ");Nsdictionary * mydic = [[nsdictionary alloc] initwithobjectsandkeys: @ "Zhang San", @ "name", @ "Li Si", @ "name", nil];Nsuinteger COUNT = [mydic count];Nslog (@ "Number of dictionaries: % lu", count );Nsenumerator *