IOS

Preliminary knowledgeiOS handles touch actions on the screen, mainly involving the following methods: Copy Code code as follows: Touchesbegan:withevent://Touch screen at the beginning of the call Touchesmoved:withevent://During

One of the least known features of IOS 8 and above is a deep link to application settings that enable users to activate locations, notifications, contacts, cameras, calendars, and health settings based on the needs of the app. Most applications

When we use micro-letters and other tools, click Sweep, you can open two-dimensional Code scan view. When we clicked on the screen, the iphone OS captured the user's "click" Behavior, and the operating system packaged the information that contained

This article has drawn a cool download progress bar, share for everyone to reference, the specific content as follows First, the realization of ideas1. To implement a drawing, it is often necessary to customize a UIView subclass, overriding the

UIViewThe shadow settings are mainly passed by the UIView layer related properties to set the The color of the shadow ImgView.layer.shadowColor = [Uicolor blackcolor]. Cgcolor; Transparency of Shadows

iOS implementation code allows only one execution -(void) viewdidload { [super viewdidload]; Do no additional setup after loading the view, typically from a nib. [Self performselector: @selector (wangmumu:) withobject:@ "afterdelay:1]; }

This text to share the iOS interview familiar with the common algorithm, let's take a look at it. 1. Sort the following set of data in descending order (bubble sort). "24,17,85,13,9,54,76,45,5,63" int main (int argc, char *argv[]) { int

First look at the effect of the original app Implementation process The main thing is to view add one to the scrolling view in to KVO monitor its slide, and then offset do the operation according to it, the following is the code

First look at the effect: Now it's time to show the real technology: First add a scrollviewto the controller, then add the imageview(Cube View group) to the corresponding position on the ScrollView , and of course, you can put the other sub

Objective Three ways to copy OC objects The object copy of OC has the following three ways, many times we confuse deep copy with full copy, other they are different, specifically as follows Shallow copy: in a shallow copy operation, a pointer

The following effects are common in iOS applications: Realize the idea: 1､ to create a head view and TableView, It is necessary to note that TableView to set contentinset,contentinsent The top is the same as the height of the background image of

I use DrawRect to stretch the view (which is described here??), and the effect chart also implements a micro-letter view effect that you can take a look at. Create a view that inherits from UIView. h file Backgoundview @property

No more nonsense to say, directly to everyone to paste the key code. The specific code looks like this: #import @interface nsstring (Utils) /** * Pinyin of Chinese characters * * @return Pinyin * * -(NSString *) Pinyin; @end #import

Appdelegate Object method Copy Code code as follows: # The program does not execute until the first time it is started -(BOOL) Application: (UIApplication *) application didfinishlaunchingwithoptions: (Nsdictionary *)

This demo for practicing small project, is mainly familiar with the current mainstream app architecture model. This project uses the MVC design pattern, pure code, and a little xib. Mainly realizes the friend circle function and shakes the function.

The example of this article distinguishes NSBundle and Nsurl, and realizes the following contents In the project to add a file, this routine is added to the Aa.txt, the contents of the file for Baidu: Www.baidu.com, now to use NSBundle and Nsurl

This article uses code to create a button that is divided into 5 steps, respectively: 1, define a button, according to the definition of location can be defined as local variables or global variables; 2, initialization button, generally using a

Uiimagepickercontroller is used to manage customizable, system-supported user interfaces for capturing pictures and videos on devices. It can also be used to select stored pictures and videos in the app. A Uiimagepickercontroller manages user

The first way to create a uiswitch component is to create it dynamically in your code. 1, open Xcode, new project switch, select Single View application. 2, open the viewcontroller.m file in the Viewdidload method to add code: Copy Code code

Get readyfirst, you need to include the afnetworking framework in the project. If you haven't afnetworking, download the latest version here:Https://github.com/AFNetworking/AFNetworkingWhen you extract the downloaded files, you will see that there