IOS

IOS development Bug Collect bugs encountered during development and learning.     1. The error message is returned when the cell ID is used to set the position. This causes program to crash. 2. For the divisor algorithm, you can directly

IOS network analysis-(Introduction to third-party AFNetworking3.0 on November 11), iosafnetworking3.0 AFNetworking3.0 is the latest version. I was going to introduce it to 2.6, but I decided not to introduce it soon. Interested friends can check it

[Code Note] Get the current hard disk space, note the current hard disk space I. Code. -(Void) viewDidLoad {[super viewDidLoad]; // Do any additional setup after loading the view. NSFileManager * fm = [NSFileManager defaultManager]; NSDictionary *

IOS, ios9 IOS database operations: add, delete, search, and modify First, you need to create a database: the database of this program is a trace database written in the plug-in of Firefox browser. Steps for Firefox to find SQLite Manager: Step 1:

Only the first time you enter the navigation view and the first navigation View Only when the program is run for the first time can the program be deleted and re-run. I only show the last image.   First create a viewcontroller class Set the Root

ViewController respondsToSelector error solution, mvcviewcontroller Cause analysis: (analyze from others' blogs)A public class or a control provided by the system has a delegate method. When the container class that creates this public control has

IOS displays the UISegmentedControl and uisegmentedcontrol in the center of the navigation bar. UISegmentedControl * segmentedControl = [[UISegmentedControl alloc] initWithItems: nil]; SegmentedControl. tintColor = [UIColor orangeColor]; // render

Objective-C Study Notes (1), objective-c Study Notes How to master a high-level programming language:(Objective-C here) Bottom-layer thinking: down, how to think about the process of running the program from the perspective of the bottom-layer

IOS miscellaneous-7 (differences between class method load and initialize), iosinitialize Before introducing the two methods, the NSObject Class Reference describes the two methods: + (Void) initialize The runtime sends initialize to each class in a

IOS project practices (best practices-prelude) and ios practices Today, when I was typing code, I felt that I had to do something worthy of my blog. I am thinking that my blog writing is so irregular, and even if there is such a rule, it will make

DOM explanation for XML parsing and comparison with the SAX parsing method, domsax XML parsing (DOM)  Introduction to the XML File Parsing Method NSXMLParser is used to parse SAX (Simple API for XML) It can only be read, cannot be modified, and

IOS CALayer (2), ioscalayer UIview has a default CALayer Object layer. Although we cannot re-create it, we can add sub-layers to it. We know that UIView has addSubview: method. Similarly, CALayer also has addSublayer: method. You can use addSublayer

This is the best answer I have ever heard. Maybe I have never met the world, but this is what I have seen: "How to become a good programmer, not a good coders ?" The best answer: [copy and paste all] In fact, my heart has been shaken by my current

The dictionary NSDictionary in OC and the dictionary nsdictionary in oc ====================================== Dictionary ====================================== NSDictionary * dict = [[NSDictionary alloc] initWithObjectsAndKeys: @ "One", @ "1", @

[Code Note] runs in the background. You can select either the foreground or background or the foreground background. 1. Engineering Drawing. Ii. Code. AppDelegate. h AppDelegate. m RootViewController. h #import @interface AppDelegate : UIResponder @

IOS UITableView, UITableViewController, and UITableViewCell are used to traverse all provinces and cities across the country. Select the corresponding region and uitableview to traverse the cell. Let's take a look at the effect. The Code is as

Baidu map navigation for iOS development and ios map navigation This article describes the navigation functions of Baidu map: Step 1: Before using Baidu navigation, We need to download the navigation SDK on the Baidu map open platform, which is 85.8

IOS IM Development preparations (5) How to Handle struct in iOS, iosstruct There are not many opportunities for iOS to process struct: Blueteeth or socket and so on... However, one day you will still meet.Fixed Length struct The so-called fixed

Multiple block Problems On a page for adding text, leftbarbutton deletes the string from the array directly. The rightbarbutton completes and corresponds to two blocks respectively. The completed blocks are written at the beginning, after being

IOS development-Create framework static library tutorial, iosframeworkEnvironment: Hardware: macbook air System: osx ei Capitan version: 10.11.3 Xcode: Version 7.2.1 (7C1002) Recently, I have done a static library for ios (it is said that the