IOS

(Conversion) basic usage of UIALertView and how to handle the event of the dialog box by UIAlertViewDelegate, uialertviewdelegate First, the View Controller must implement the method in the Protocol UIAlertViewDelegate and specify the delegate as

IOS MVC design mode and iosmvc Design Mode Notes for using property: Copy: NSString Strong: general object Weak: UI control Assign: Basic Data Type PS: the first is the most basic model, which will be improved later. Reasons for replacing the

IOS development -- Stage 2 -- Communication -- JSON system parsing, ios -- json JSON system parsing:   1. Create the Request Path and URL;   2. Construct a request based on the URL. If NSMutableURLRequest is used for POST, the NS variable URL

Clear iOS app CacheClear iOS app cache clear Cache dispatch_async( dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) , ^{ NSString *cachPath =

IOS capture program crash log, ios capture crash log It is normal to encounter a program crash during iOS development. How can I capture the exception information and notify developers when the program crashes? The following describes how to

IOS: before the date is converted to xx // Before converting a date to xx @ interface NSString (date) + (NSString *) dateString :( NSString *) dateStr; @ end @ implementation NSString (date) + (NSString *) dateString :( NSString *) dateStr {NSDate *

IOS Study Notes 2015-03-24 OC-API-Immutable string, 2015-03-24oc-api- Mostly imitation//// Main. m // OC-API-Immutable string /// Created by wangtouwang on 15/3/25. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import // initialize

IOS local data storage (1)   UserDefaults for local data storage   The basic data types supported by UserDefaults include: NSData,NSString,NSNumber,NSDate,NSArray, OrNSDictionary   If you store a custom class directly, the following error

Enter 6 digits in the ios input box -(BOOL) textField :( UITextField *) textField shouldChangeCharactersInRange :( nsange) range replacementString :( NSString *) string {if (textField. tag = 11) {// new password if (range. location 0) {unichar

IOS Study Notes OC-API-date- API 1 NSdate2 NSDateFormatter 2 Application Scenario 1 get current date 2 increase time difference 3 Comparison time difference 4 return earlier time 5 Date Format words 6 date to string 7 string to date 3 specific code /

Convert NSData to NSString, Byte, UIImage, and nsdatansstring in Object-C 1. NSData and NSString NSData --> NSString * aString = [[NSString alloc] initWithData: adata encoding: NSUTF8StringEncoding]; NSString --> NSData NSString * aString = @ "1234 "

IOS development-Code Snippets (Code Snippets) improve development efficiency.   Introduction A new feature introduced in XCode4 is "Code snippet (Code Snippets )". For some frequently used Code, abstract it into a template and put it into Code

IOS Study Notes OC-API-network access-Case 1, 2015-03-24oc-api- //// WPSuggest. h // OC-API-network access /// Created by wangtouwang on 15/3/24. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import # pragma mark-class feedback @

IOS. OC.02 KVC-key value encoding, ios. oc.02kvc-key value KVC is the abbreviation of key, value, and coding, that is, key-value encoding. In iOS, You can indirectly access the property information of an object through the class attribute name (key.

IOS monitors changes in textField values in real timeConsidering the proxy method: TextFieldDidEndEditing cannot listen for real-time changes in textFiled. To implement real-time monitoring, we recommend that you register a notification to listen

IOS UICollectionView getting started 07 click cell to enlarge the image In this section, you can click an image to enlarge the image. First, we create a class named FlickrPhotoViewConroller, which inherits from UIViewController. Modify the header

IOS File Management 2 and ios File ManagementIOS development-File Management (2) 5. Plist files Add in String Mode NSString * path = [NSHomeDirectory () stringByAppendingPathComponent: @ "Array. plist"]; NSString * content = @ "abcd "; [Contect

2. iOS development UI-program startup principle and UIApplication, 2. iosuiapplication UIApplication delegate I,UIApplication1. Brief Introduction (1) A UIApplication object represents an application. A UIApplication object represents an

On iOS, double-click Home to switch If you double-click Home, you will be taken to the iOS App's switcher page, where the App suspended by the current system is listed. The screen-cutting of each App is displayed. I believe everyone is familiar

IOS block programming guide 5 blocks and variablesBlocks and Variables (Block and variable) This article describes the interaction between blocks and variables, including memory management. This article describes the internal relationship between