IOS

The Reachability class can only differentiate between WiFi and Wwan types, but cannot differentiate between 2G and 3G networks. There are some methods on the Internet, but there are bugs. Through the Internet to find data and testing, basically

Imitation iOS icon jitter #import "LHViewController.h" #define Angeltorandian (x) ((x)/180.0*m_pi) @interface Lhviewcontroller () @property ( Strong, Nonatomic) Iboutlet Uiimageview *imageview; @end @implementation Lhviewcontroller-(void)

Method One: Copy Code code as follows: -(uiimage*) Scalefromimage: (uiimage*) Image scaledtosize: (cgsize) newsize { Cgsize imagesize = image.size; CGFloat width = imagesize.width; CGFloat height = imagesize.height; if (width

When developing an iOS program, sometimes you need to adjust the time format to the format that you want, and we can use the NSDateFormatter class to handle it.For example: Instantiate a NSDateFormatter objectNSDateFormatter *dateformatter =

Memory warningThe available memory for each app under iOS is limited, and if an app uses more memory than this threshold, the system sends memory warning messages to the app. After receiving the message, the app must release as much unnecessary

Event response for SubviewIn the view hierarchy, Subview can be displayed outside of the frame area of its parent view by default, and you can restrict the display area of Subview by setting the ClipToBounds property to Yes. But when the touch is

First, let's take a look at its view level diagram: Copy Code code as follows: -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (nsdictionary *) launchOptions { Self.window = [[UIWindow alloc]

To do a two-dimensional code scan of iOS, there are two third-party libraries to choose from, Zbar and zxing. Today we are going to introduce the native two-dimensional code scan provided by the iOS7.0 avfoundation framework. First you need to add

Recent project needs, to achieve a similar micro-letter expression input, so the micro-letter expression push lightly out, to achieve a. You can download the source code from here. Looks like the expression input does not have how many things, is

Some time ago the company in the development of a project, while now have time to put the knowledge point of the collation. Item Product Details page at that time is imitation Taobao, the use of Third-party Library is Mjrefresh, pull operation and

Recently learned several methods of delaying execution, share. 1.performSelector (NSObject) method 2.NSTimer method 3.GCD method 4.sleep (Nsthread) method Deferred code execution: -(void) Delaydo: (ID) Sender { NSLog (@ "do:%@",

IOS-GCD Introduction During the development process, we sometimes want to encapsulate some of the operations and delay them for a while. in iOS development, there are two common ways to implement deferred execution, one is to use GCD, and the other

IOS fingerprint identification, here to organize the knowledge used in the project. IOS fingerprint recognition now, in the demand for security and efficiency, the common password can not meet our requirements, fingerprint recognition was born.

Description: This article describes multithreaded breakpoint downloads. The project uses the Apple-band class, which enables simultaneous opening of multiple threads to download a larger file. Because the implementation process is more complex, the

First look at the effect diagram to be implemented The sample code is as follows Untitled.gif #import "ViewController.h" #import "CollectionViewCell.h" #import "CollectionSectionView.h" @interface Viewcontroller () @property

Query time or long or short, in order to enhance the user experience, the current use of more than one of the means of query waiting to add a dynamic wait effect. We have an action effect when we load the page while requesting the network, and the

Face full screen background picture, to put multiple buttons in a fixed position of the problem my solution, specifically as follows: The picture is like this. Repeat the question: for example, I would like to place five buttons on the M U R P on

The recent project, for the iphone model adaptation is very headache, so tidy up the online data, recorded, may be able to help you read the article, I'm going to talk to you today about the full model fit idea of the latest research. Currently,

The so-called elastic scrolling refers to the flip long page when the finger left, from slow to block, from fast to slow over. Most browsers on the Androping platform default to this behavior iOS currently has only the flexibility to overflow the

Here's how it works. Drawing of circular heads Let's take a look at the effect chart Analyze: 1, first is the need to draw a round head with background color 2, then the need to draw text 3, text is a part of the intercepted string 4,