IOS

Processing of memory warnings in iOS // Release the memory that is not currently in use, which is used by the current program. -(Void) didReceiveMemoryWarning { [SuperdidReceiveMemoryWarning]; // Dispose of any resources that can be recreated.

Ios_26povercontroller for simple use Finally: UIImage classification, Point2Color: Vc3ryb25np1_vcd4kpha + PHByZSBjbGFzcz0 = "brush: java;"> /// UIImage + Point2Color. h // 26_poverctrl /// Created by beyond on 14-8-31. // Copyright (c) 2014

IOS interview FAQ1. jesus has 13 disciples, and one of them is the traitor who sold Jesus. Please use exclusion to find the traitor: 13 people sat around and started reporting cyclically from the first person and counted to three, the last person

How to package iOS Projects 1 first, select the project's real machine test, do not simulator, and then find the product from the top menu bar 2. Select archive in the product. 3. After archive is selected, a page appears, followed by two

Logging User Login status in IOS development and logging in to ios development users As mentioned in the previous blog, CoreData is used for data persistence. The configuration and use steps of CoreData are quite complex. However, CoreData is quite

IOS development-File UploadIOS development-File UploadIt is essential to upload files in the form of mobile app development files. Recently, I have simply sorted out the file upload code for IOS files. If you need Android code, I can also share it

Automatic Layout of IOS development displays network request content and ios development layout request The previous blog detailed the relative layout and absolute layout in IOS development. As the cell phone screen size changes, in App development,

Bjective-C elegant name There are only two hard things in Computer Science: cache invalidation and naming things. There are only two difficulties in Computer Science: cache invalidation and naming. -Phil Karlton Computer Language is a medium

Ios constructs the httpPost header StructureConstruct the httpPost header structure in ios by Wu xueying NSString * urlStr = @ "; NSURL * url = [NSURL URLWithString: urlStr]; NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL: url];

Memory Management when multiple IOS uiimageviews load a large image When we have multiple uiimageviews In a View and the UIImageView displays a large image in high definition, the memory warning may occur. If you enter this view for the first time,

IOS6/iOS7, 3.5 inch/4.0 inch Retina (3.5/4 inch Screen) or Non-Retina judgment If ([[UIScreen mainScreen] respondsToSelector: @ selector (scale)]) {if ([[UIScreen mainScreen] scale] = 2.0) {if ([UIScreen mainScreen]. bounds. size. height = 568)

Implementation of iOS simple calculator //// CCLAppDelegate. m // TestCalculator /// Created by lanouhn on 14-8-20. // Copyright (c) 2014 vaercly@163.com Chen conglei. all rights reserved. // # import "CCLAppDelegate. h "# import" CCLCalculatorView.

Publish apps to appStore on ios 1. Enter the developer Management Interface[Click iTunes Connect] 2. Go to the manage apps page.[Click Manage Your Apps] 3. Add a new appClick Add New App] 4. Fill in some app Information Default Language: Set

IOS Program Execution Process // The UIApplication main function is the entry of the application. // 1. Create an Application Object (UIApplication object) // 2 Specify the agent of the application (monitor the execution status of the application

IOS Address Book programming, listening to system address book changes Listen for address book changes The client code must be implemented as follows: /* Remove the registration function */-(void) dealloc

IOS development-playing local audio (playing in the background) // Initialize music // create music file path NSString * musicFilePath = [[NSBundle mainBundle] pathForResource: @ "eyeExe" ofType: @ "mp3"]; // determine whether the file exists if

The pitfalls we have stepped on in those years-NSTimer, pitfall-NSTimer When I was working yesterday afternoon, I met this requirement. When a network request fails, I saved the request data to my local computer and resend it three times

IOS image processing-cropping Images Solution:Based on the ratio of a certain length to width, the upper and lower parts of the image are cropped to retain the content in the middle. You can also customize the area to be cropped. Prerequisites:You

IOS: learning notes, Value and Reference Type (translated from: https://developer.apple.com/swift/blog/ Aug 15,201 4 Value and Reference TypeValue and Reference type Value and Reference Types In Swift, there are two data types. the first is "value

Use the iOS UI knowledge to compile the neon effect (classic question) For (int I = 0; I UIView * view = [[UIViewalloc] initWithFrame: CGRectMake (0 + I * 20, 0 + I * 20,320-40 * I, 568-I * 40)]; CGFloat color = (arc4random () % 256/255 .0 );