IOS

IOS Programming Camera 1, iosprogramming IOS Programming Camera 1 1 Displaying Images and UIImageView 1.1 put an instance of UIImageView on the screen. Then drag an instance of UIImageView onto the view and position it below the label. A UIImageView

Explanation of iOS SDK NSPredicate (Swift)   Predicates are widely used in set filtering and CoreData. This article uses the Swift code on Playground as an example to explain how to use NSPredicate. Preparations Create an array on Playground to

IOS obtains the sub-Controller on Interface Builder in two ways.   PreparationsOn the Storyboard, drag and drop two sub-controllers for a ViewController, and set the identifiers of the two sews to childvc1 and childvc2 respectively.Effect Method 1:

IOS map positioning uses several small FunctionsThe positioning service provided by the iOS system can meet many requirements. For example, obtain the current longitude and latitude, and obtain the current location information.Obtain the current

IOS basics-UITextField UITextField is usually used for external text input, which is a common input box. The following code describes various UITextField attributes and methods.   -(Void) viewDidLoad {[super viewDidLoad]; // text input box

UITabelView advanced (custom Cell), uitabelviewcell Customize a Cell When we want to display complex data, such as a button chat interface or a news list, the system's lines cannot meet our requirements. In this case, we can customize this line,

IOS slides tableView to change the color of the navigation bar-(Void) viewDidLoad {[Super viewDidLoad];[Self initTableView];}-(NSInteger) numberOfSectionsInTableView :( UITableView *) tableView {Return 1;}-(NSInteger) tableView :( UITableView *)

IOS development-JSON ParsingJSON Parsing What is JSONJSON is a lightweight data format and is generally used for data interaction.The data that the server returns to the client is generally in JSON or XML format (except for file downloads) JSON

IOS programming UITabBarController, uitabbarcontroller IOS programming UITabBarController 1.1 View controllers become more interesting when the user's actions can cause another view controller to be presented. When a user's action can lead to other

Ios lazy Notes application source code, ios lazy source code This source code is the application source code of the lazy note application, and also an application of an online apple App Store. The Lazy note iOS client source code supports speech

Objective-C Memory Management Being Exceptional Exception Handling and Memory, memorymanagement Objective-C Memory Management Being Exceptional Exception Handling and Memory 3.1 Cocoa requires that all exceptions must be of type NSException Cocoa

Message forwarding in iOS   Well, running is a good thing. In Objective-C, this feature can help us do a lot of things. First, this feature changes code decisions from compilation and linking to running, so that we can use this feature to do

IOS data persistence-plist   The previous article mentioned how to use NSUserDefaults to store user preferences. This article describes how to use plist and common files to store structured data, generally, Plist is used to store data that does not

Introduction to Block in iOS (1) Basics and introduction to iosblockIntroduction to Block in iOS (I) Basics I. Overview Block is a C-level syntax and runtime feature. Block is similar to a C function, but the flexibility of Block is reflected in the

[Reading Notes] 100 Switf tips and switf tips   StatementWelcome to repost, but please keep the original source of the article :) blog Park: http://www.cnblogs.com farmer UNCLE: http://over140.cnblogs.com Body1. Selector can be constructed using

UILabel of UI -- attributes and usage, uiuilabel -- Usage 1 // initialize the Label and set the location and size of the label. 2 UILabel * label = [[UILabel alloc] initWithFrame: CGRectMake (50,100,100, 40)]; 3 4 // set the label position and size 5

IOS tableVIewcell to the left end of the horizontal line, iostableviewcell You need to add the following code to initialize tableview and draw the cell Proxy: // Initialize and add Self. tableView_chose = [[UITableView alloc] init]; If ([self.

IOS UITextView limit         // UITextVIew input box Self. contentTV = [[UITextView alloc] initWithFrame: CGRectMake (0, lineVIewOne. frame. origin. y + lineVIewOne. frame. size. height + 1, self. view. frame. size. width, 160)]; Self. contentTV.

Simple login layout for ios Learning Haha, I am a local tyrant. I have to buy a mac and start to install it. I can't be idle when I buy it. By the way, I want to learn about ios and learn a simple login interface, all apps have logon interfaces.

IOS adds a long-pressed gesture to the cell of tableview twice (UILongPressGestureRecognizer) Here we add a long-pressed gesture for tableview   UILongPressGestureRecognizer * longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget: self