IOS

IOS --- NSFetchResultsController NSFetchedResultsController and UITableView are integrated to process data with great flexibility. The first advantage is that data records do not need to be paged. Otherwise, according to the traditional practice,

The history of tears that Apple was rejected .. The project has been submitted N times and reviewed N times. Apple's review mechanism is still so fast and slow. I was rejected again yesterday. Let's sum up the previous ones. 2015.04.28 Yesterday, I

IOS development-custom list controls In the past two days, projects are relatively idle. When you are idle, You can implement the list control by yourself. It took about one day from the start of the project to the preliminary completion. At present,

IOS advanced development KVC (1) The Skillful Use of KVC can bring us great benefits in the development process. Especially when the json conversion model is used, KVC frees programmers from tedious and nutritious code accumulation. Reducing the

A question about the hybrid use of segment and tableview last night, segmenttableview Last night, when I was working on the offline interface of Baidu map, I used a segmentcontrol to control two tableviews. However, I found that no matter how you

IOS development-Contacts touch eventsTouch event When a user uses an app, various events are generated. Events in iOS can be divided into three types: Touch event: accelerator event: Remote Control event:Recipient In iOS, not all objects can process

Use of IOS SQLite3I. What is SQLIte? SQLite is a lightweight embedded database, which occupies very low resources. In embedded devices, it may only need several hundred KB of memory. The processing speed is faster than that of Mysql and PostgreSQL. 2

IOS CLLocationManager positioning, iOS 8 Note This afternoon, I started to use the built-in Location of IOS. I read a lot of tutorials on the Internet and run the sample code directly, but I still cannot get the location. The Code is as

IOS call Function // The first call Method -(IBAction) firstCall :( id) sender { NSString * phone = @" 18749627117 "; If (phone! = Nil ){ [[UIApplication sharedApplication] openURL: [NSURL URLWithString: [NSString stringWithFormat: @ "tel: % @",

IOS lib (. a) Library conflict solution, ios. When introducing third-party lib (. a) Library is often caused by the introduction of the same open source code as your existing project in the third-party lib library. o conflict. ASIHttp occurred

(To) oc static extern and const, ocextern Static global, which can be changed. If static is declared in a class, the change volume is also used when it is used elsewhere in the class. Similar to java, but cannot be accessed directly using the class

Gestures in IOS1. Click UITapGestureRecognizer * tap = [[delealloc] initWithTarget: self action: @ selector (click)]; // set the number of times to be clicked [tap setNumberOfTapsRequired: 1]; // set the number of fingers for the current event to be

IOS clipboard version UIPasteboard/UIMenuController Direct call of system clipboard In fact, the whole process is very simple. I will use a custom UILable I wrote to call the system clipboard. First, because Apple only releases the clipboard of the

(Conversion) iOS learning-plist file read/write, iosplist During iOS development, plist files are often used. What is a plist file? Its full name is Property List, which is an attribute List file used to store serialized objects. The property list

(CHANGE Part) IOS gesture password (simple version), ios gesture /// Created by wangtouwang on 15/4/7. // Copyright (c) 2015 wangtouwang. all rights reserved. // # import @ class YYLockView; @ protocol YYLockViewDelegate // customize a protocol //

(Conversion) Use of UIColor, use of uicolor OS development-Use of UIColor. During ios development, operations related to UIColor are often encountered. For example, self. backgroundColor = [UIColorredColor]; The redColor here is the color defined by

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

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

A circular progress bar is achieved through the busel curve and the strokeStart and strokeEnd attributes of CAShapeLayer. # Import @ interface CircleProgressView: UIView/** start value (0-1) */@ property (nonatomic, assign) CGFloat fstartValue; /**

IOS-simple Tom code # Import @ Interface ViewController: UIViewController // Tom Image view@ Property (weak, nonatomic) IBOutlet UIImageView * tomcatImageView; // Animation operation-(IBAction) animationAction :( UIButton *) sender; @ End Bytes ---