IOS basic learning UIButton Usage Details

IOS basic learning UIButton Usage Details The UIButton button is the most commonly used control in IOS development. As a basic knowledge of IOS learning, beginners need to understand its basic definition and common settings so that they can be used

Display only one line of text that can be rolled left and right (UITextField Chinese restrictions), scroll uitextfield

Display only one line of text that can be rolled left and right (UITextField Chinese restrictions), scroll uitextfield //// ViewController. m // scroll text displayed in one row /// Created by apple on 15-5-8. // Copyright (c) 2015 apple. all rights

IOS programming UITabBarController, uitabbarcontroller

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

Three methods for loading gif dynamic images and gif dynamic

Three methods for loading gif dynamic images and gif dynamic Preparation: local image resources, GIF View GifView code: /*** The call ends to start playing the animation. If you need to specify when to play the animation, you only need to place the

Perfect solution-adaptive content height for iOS WebView, ioswebview

Perfect solution-adaptive content height for iOS WebView, ioswebview /// // Initialization, self. view is the parent control ///_ webView = [[UIWebView alloc] initWithFrame: CGRectMake (0, 0, self. view. frame. size. width, 0)]; _ webView. delegate =

IOS Programming Views: Redrawing and UIScrollView, iosuiscrollview

IOS Programming Views: Redrawing and UIScrollView, iosuiscrollview IOS Programming Views: Redrawing and UIScrollView 1.1 event You are going to see how views are redrawn in response to an event. You will see how the view responds to the event. You

IOS project-Address Book, ios Project address book

IOS project-Address Book, ios Project address book This is mainly for the geek College's address book project, knowledge point sorting... click-> download code 1. When the login and password input boxes are empty, they are

Objective-C Properties, objective-c

Objective-C Properties, objective-c Objective-C Properties Apple introduced properties, a combination of new compiler ctictivesAnd a new attribute accessor syntax. Apple introduced the attribute concept. New compiler commands and new attribute

UITabBarController (Label bar Controller), uitabbarcontroller

UITabBarController (Label bar Controller), uitabbarcontroller I. Basic concepts of the label bar Controller The UITabBarController inherits from the View Controller and manages the View Controller in the form of tag bar items. The view controllers

On iOS learning and ios

On iOS learning and ios It has been almost two years since I learned iOS in a twinkling of an eye. there are setbacks and joys on this road. I have come along step by step to find that this process is a fortune of my life. My old boss always said to

(IOS) RESPONSE event transfer, nextResponder Research

(IOS) RESPONSE event transfer, nextResponder Research RESPONSE event transfer, nextResponder Research Here, we will consider the following two cases.   Question 1. How do I call the methods in the controller of the parent view? The answer is

Delete special characters in NSString in iOS

Delete special characters in NSString in iOS + (NSString *) stringDeleteString :( NSString *) str {NSMutableString * str1 = [NSMutableString stringWithString: str]; for (int I = 0; I You can delete numbers and symbols in nsstring, or modify

Differences between nil, NULL, Nil, and NSNull in iOS

Differences between nil, NULL, Nil, and NSNull in iOS 1. nil > Defines the id of a null instance. Define an instance as null and point to the NULL pointer of the object in oc. > Sample code: NSString * someString = nil; NSURL * someURL = nil; Id

How to convert a non-ARC project to an ARC project

How to convert a non-ARC project to an ARC project How to convert a non-ARC project to an ARC project Xcode comes with an automatic conversion function, but it is only suitable for small projects. It is not suitable for large projects. Therefore,

Should I learn Swift or Objective-C directly?

Should I learn Swift or Objective-C directly? After Apple released the Swift language at the 2014 WWDC Conference, many beginners have a common question about whether to learn C or Objective-C. In addition, it seems that people are still confused

Ios oral English 800 sentence application source code, ios oral English 800 sentence

Ios oral English 800 sentence application source code, ios oral English 800 sentence A few days ago, whimsy made a very watery application called "chinese 800" (800 sentences in spoken chinese). Now, it has been passed on by others (ongoing ).

Adjust textField (multiple) locations based on the keyboard so that it will not be blocked by the keyboard, textfield Blocking

Adjust textField (multiple) locations based on the keyboard so that it will not be blocked by the keyboard, textfield Blocking When a textField is displayed on the interface, make sure that the textField is not blocked by the keyboard. The general

IOS development and replication Summary (deep copy and shallow copy differences)

IOS development and replication Summary (deep copy and shallow copy differences)1. Copy a variable string NSMutableString * city = [NSMutableString stringWithString: @ "Beijing"]; // copy the variable copy NSMutableString * cityCopy = [city

IOS notes (common knowledge points)

IOS notes (common knowledge points) This is some notes I made when I was working on projects at the company ....... // 1. iphone development-change the color of the dot in UIPageControl PageControl. currentPageIndicatorTintColor = [UIColor

Download network images for iOS

Download network images for iOS-(Void) setWebImage :( NSURL *) aUrl placeHolder :( UIImage *) placeHolder downloadFlag :( int) flag {Dispatch_async (dispatch_get_global_queue (DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^ {// Configure the download

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