IOS

The following is my own guess and I have never seen any official documentation. A long time ago when I first came into contact with IOS, I thought about a problem, but I didn't want to understand it. I didn't find any problem when I got online with

First, let's talk about how to implement this. you can log on to multiple accounts, that is, you can save multiple Weibo accounts and choose one of them to log on. Multiple account information is stored in the sqlite database. Each account

  1. determine the user name, which must be 2-16 characters long   -(BOOL) CheckInput :( NSString *) _ text   {   NSString * Regex = @ "^ \ w {2, 16} $ ";   NSPredicate * emailTest = [NSPredicate predicateWithFormat: @ "self matches % @",

During the development of the iPhone application, when the TextField control obtains the input focus, the keyboard automatically pops up and you can enter it.However, when the TextField control is at the bottom of the screen, the pop-up keyboard

Many iPhone chat programs like to display messages in the iChat bubble style. Is it apple? Then we will use a simple method to implement it. Mainly through The sizeToFit method of UIlabel automatically calculates the text area size UIImage-(UIImage *

The last time we learned how to use Interface Builder to create a program Interface. This time we will learn the specific operations and processing in the program.Confirm operation and handling First, let's confirm how the user operates the controls

Image structure In Cocoa Touch programming, an application can contain multiple images. Display by selecting a list, or by using the label below, and so on. In CocoaTouch, one of these images becomes a View. If you only create a View, you cannot

(1) genie Any two-dimensional bitmap image that can be freely moved on the screen independent of other things; (2) genie table Images containing more than one Genie are called Genie tables. A genie table is an image that contains a series of Sprite

Development Kit is a third-party interface developed by the iPhone. It allows you to share text, images, URLs, files to third-party websites such as facebook, twitter, delicious, tumblr, and google reader with one click.     Below is: (1) Download:

  The iPhone's keyboard is 216 pixels high. programmers have to adjust the window view when the keyboard is popped up to avoid the input control being blocked by the keyboard.   IPhone programmers generally use observer objects that register Soft

The game has not been completed, not only has not been completed, but also has a lot of things!Since we have not carefully considered the extendibility of the level file, many unexpected game elements cannot be added to the game through the level

In iPhone101.pdf P30, There is a description about the File's Owner.  In a nib file, in contrast to the other objects you add to the interface, the File's Owner object is not created when the nib file is loaded. it represents the object set to be

Then the class file in Objective c uses the extension m. [Plain]Fraction. m# Import "Fraction. h"@ Implementation Fraction-(Void) setNumerator: (int) n {Numerator = n;-(Void) setDenominator: (int) d {Denominator = d;}-(Void) setNumerator: (int) n

Create a UITextView. By default, the keyboard is started and the cursor is positioned at the first position. Because the UITextFiled class does not have this function, UItextView is used instead. The Code is as follows: [Cpp] UITextView *

Recently, I saw a demo on the Internet, "add a hidden toolbar to the keyboard in iPhone development". After running the demo, I found that after clicking "hide the keyboard, the previous TableView cannot be restored to the display when the

-(BOOL) application :( UIApplication *) application didfinishlaunchingwitexceptions :( NSDictionary *) launchOptions{Self. window = [[uiappswalloc] initWithFrame: [UIScreenmainScreen] bounds];Self. window. backgroundColor = [UIColorwhiteColor];//

Regular Expressions are often used when processing strings, which are no exception on iphone OS. Use RegexKit Frameworkhttp: // regexkit.sourceforge.net/RegexKitLite/index.html. Here the http://downloads.sourceforge.net/regexkit/RegexKitLite-4.0.tar.

:Switch:Create a view-based project named Animation2 and add several images to the project !!Directly implement the Code in Animation2ViewController. m:  -(Void) viewDidLoad{// Define an array to store all image objectsNSArray * images = [NSArray

In Xcode4.3.2, create an IOS CocoaTouch project named register. Define four output ports in ViewController. h: user, pass, year, sex; Because the Label does not need to obtain data, the output port is not defined. Two buttons are defined: Cancal and

1) initialize UILabel UILabel * scoreLabel = [[UILabel alloc] initWithFrame: CGRectMake (self. bounds. size. width/2), 0.0, 150.0, 43.0)]; ScoreLabel. textAlignment = UITextAlignmentCenter; ScoreLabel. text = @ "I'm Andy -- Qingfeng "; ScoreLabel.