IOS

Network Programming for iOS development-6. NSURLSessionConfiguration notes, nsurlsession   The NSURLSessionConfiguration object is used to initialize the NSURLSession object.Expand the alternative scheme related to NSMutableURLRequest at the

UIImagePickerController and UIAlertController are used in combination. When processing profile pictures, there are usually two options: one is to call the System camera and the other is to call the system album. The UIImagePickerController method is

UIScrollView, used by uiscrollview Knowledge point: 1) UIScrollView 2) UIPageControl ========================================================== ====================   I. UIScrollView   1. Introduction to UIScrollView A scrollable view is generally

IOS development: Best practices for Interactive Prototype Many UX And PM users are still accustomed to using the traditional Axure RP to create product prototypes. The author thinks that Axure RP still has advantages in the iOS prototype phase, for

Low-level errors that XIB cannot drag lines.Problem description After the XIB file is created, it is associated with the. m file, but it cannot be dragged in any way. The process does not respond. Clearing the cache and restarting Xcode cannot be

IOS8 problem locating Solution1. Modify info New keys: NSLocationAlwaysUsageDescription and NSLocationWhenInUseUsageDescription are added. The values of these two keys are used to describe the instructions for using and locating during application

The control does not receive user interaction and Event Response sequence, and the control does not During development, you may encounter a control that does not receive user interaction. You can check the following aspects: 1. enable = NO can not

UISearchController, uisearchbar Use of UISearchController in the search box (replacing UISearchBar + UIS after iOS8.0) 1. In iOS 8.0 and later versions, we can use UISearchController to conveniently Add the search box to UITableView. in earlier

2: CAKeyframeAnimation, cakeyframeanimation It is a subclass of CApropertyAnimation. The difference with CABasicAnimation is that CABasicAnimation can only be changed from one value (fromValue) to another value (toValue), and CAKeyframeAnimation

C language learning in ios development-structure introduction and ios Language Learning In the development process, a group of different types of data is often needed, such as the student's personal information, which consists of the name, age,

Network Programming for iOS development -- get the MIMEType and iosmimetype of the file Sometimes we need to obtain the MIMEType information of the file. The following describes how to obtain MIMEType.   1. Search for the keyword "MIMEType" in Baidu

Data Model relationship of iOS CoreData development, ioscoredata Next, in the previous article, we implemented a user entity. This time, we added a user information entity, which is associated with the user entity. The relationship is. Create an

IOS alert clock implementation, ios alert clock implementation UILocalNotification * notification = [[UILocalNotification alloc] init];If (notification! = Nil){NSDate * now = [NSDate new];// Notification. fireDate = [now addTimeInterval:

For iOS, you can customize the startup page and ios In normal development, there may be some special requirements for the startup page, such as adding an animation on the startup page or adding some buttons to respond to events. In recent projects,

IOS uses SDwebImage to cache images and display them when the network is disconnected,[_ LoadImageViewsetShowActivityIndicatorView: YES];[_ LoadImageViewsetIndicatorStyle: UIActivityIndicatorViewStyleGray];_ LoadImageView. contentMode =

POP-POPSpringAnimation, Facebook's open-source animation library pop POPSpringAnimation may be the reason most people use POP it provides a spring-like animation effect; the instance source code has been uploaded to gitHub, address:

IOS achieves three-screen reuse of circular advertisements and ios multiplexing of advertisements We are no longer familiar with circular advertisements during development. Today we will sort out this scrollview three-screen reuse advertisement. The

The image path is null._ 1. Problem description :_ In useNSString * path = [[NSBundle mainBundle] pathForResource: picName ofType: nil];When obtaining the absolute path of an image, the obtained path is null, that is, the path acquisition fails. The

IOS IM development preparation (I) XML parsing, iosim There are many blogs about XML parsing that I didn't want to write, but I found that they didn't talk about any details. I will talk about some details here. Where can we use XML? Currently,

Immutable string NSString and variable string NSMutableString, nsstring replace string Immutable string // Create a String object NSString * string = [[NSString alloc] initWithFormat: @ "zhong huang-"]; NSString * string1 = [[NSString alloc]