How to Set and use the color and font size of the title and the default TabBar in iOS settings navigation, iostabbar

How to Set and use the color and font size of the title and the default TabBar in iOS settings navigation, iostabbar Step 1: // Add a field in info. plist: view controller-base status bar to NO;// Navigation color[[UINavigationBar appearance]

IOS obtains the file and folder size, and ios obtains the folder size.

IOS obtains the file and folder size, and ios obtains the folder size. // When the cache is deleted, the cache size is calculated. // the size of a single file-(long) fileSizeAtPath :( NSString *) filePath {NSFileManager * manager = [NSFileManager

IOS memory management and ios Memory Management Mechanism

IOS memory management and ios Memory Management Mechanism Memory Management ensures that the opened heap space is correctly released. If the heap space is not released, the heap space is called [Memory Leak] and the released space is called [release

Layer and 3D affine transform, layer3d imitation

Layer and 3D affine transform, layer3d imitation1. View display is based on a layer. You can control the display effect by using the control layer to obtain the layer of the current view and add a rounded border to it. // Set the width of the layer

Cocoa cola-Cocoa Framework prototype, cocoacola

Cocoa cola-Cocoa Framework prototype, cocoacola In many object-oriented applications, the creation cost of some objects is too high or too complex. In this case, you can only make minor changes to recreate the same object, to adapt to specific

Block for IOS development and iosblock

Block for IOS development and iosblockBlock for IOS development 1. What is block? The role of block Common UI development and network functions implement callback. The button event processing method is the callback method. (1) The target action

IOS network data download and JSON parsing, and ios data json Parsing

IOS network data download and JSON parsing, and ios data json ParsingIntroduction to IOS network data download and JSON Parsing In this article, I will introduce how to use URLConnection to download data from the network, parse the downloaded JSON

Unicode conversion to Chinese characters, Unicode conversion to Chinese Characters

Unicode conversion to Chinese characters, Unicode conversion to Chinese Characters + (NSString *)replaceUnicode:(NSString *)unicodeStr { NSString *tempStr1 = [unicodeStrstringByReplacingOccurrencesOfString:@"\\u"withString:@"\\U"]; NSString *tempStr2

Event Delivery: The Responder Chain (Event passing, response Chain), deliveryresponder

Event Delivery: The Responder Chain (Event passing, response Chain), deliveryresponder When designing an app, we may want to respond dynamically to events. For example, to touch a screen with many different objects, you need to decide which object

IOS multithreading summary, ios Multithreading

IOS multithreading summary, ios Multithreading1. Do not open too many threads at the same time (1 ~ 3 threads, no more than 5) 2. thread Concept 1> main thread: UI thread, display and refresh UI interface, process UI control events 2> sub-thread:

Singleton mode for iOS development and iOS development

Singleton mode for iOS development and iOS development Singleton mode for iOS development In iOS development, the singleton mode is used in many places. In many cases, one object must be created and multiple objects cannot be created. To avoid

FMDB for iOS development and fmdb for ios development

FMDB for iOS development and fmdb for ios developmentIOSDevelopment DatabaseFMDB  1.Introduction Purpose: If you need to save a large amount of complex data, use a database, such as a pass test item. Common databases: (1) Microsoft SQL Server 2000/20

XML parsing for iOS development and iosxml Parsing

XML parsing for iOS development and iosxml ParsingXML parsing in iOS development 1. XML format Structure: layered nested Tree Structure 1.0 indicates the XML file version, and UTF-8 indicates the encoding used by the internal text indicates the

IOS development pull-down refresh and pull-up loading more, ios Loading

IOS development pull-down refresh and pull-up loading more, ios LoadingIOS development pull-down refresh and pull-up loading more 1. Introduction to common pull-down refresh and pull-up loading more implementation methods (1) UIRefreshControl (2)

XML parsing code for iOS development and iosxml Parsing

XML parsing code for iOS development and iosxml ParsingXML parsing code for iOS development // 1. load and parse the XML file NSString * path = [[NSBundle mainBundle] pathForResource: @ "xml.txt" ofType: nil]; NSData * data = [[NSData alloc]

IOS Study Notes OC-API-file read and write, c-api-

IOS Study Notes OC-API-file read and write, c-api- //// WPFileHelper. m // OC-API-File Operations /// Created by wangtouwang on 15/4/3. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import "WPFileHelper. h "@ implementation

IOS needs to call a method after executing an animation.

IOS needs to call a method after executing an animation. Method 1:, Use a listener   UIView beginAnimations The method is as follows:     [UIView beginAnimations: nil context: nil]; // proxy, listening object [UIView setAnimationDelegate:

How to hide UITabBar under iOS6 and iOS7

How to hide UITabBar under iOS6 and iOS7 If you don't stick to it, you won't make progress! These two days are compatible with iOS6, and the original region does not respond to the Click Event After UITabBar is hidden. This will happen if you don't

Custom induction of iOS keyboard types

Custom induction of iOS keyboard types Sometimes we cannot display the mobile phone and keyboard on the Xcode virtual machine, because we have not set the keyboard correctly: You can do this: Make sure that the third box is also marked with a pair

Daily and weekly iOS reminders

Daily and weekly iOS reminders // Update the prompt at every day -(Void) alertByDay { NSDate * date = [NSDate date]; NSCalendar * calendar = [NSCalendar currentCalendar]; NSDateComponents * comp = [calendar components :( NSHourCalendarUnit |

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