IOS

@ Property (nonatomic, getter = isUserInteractionEnabled) BOOL userInteractionEnabled; @ Property (nonatomic) NSInteger tag; @ Property (nonatomic) CGRect frame; @ Property (nonatomic) CGRect bounds; @ Property (nonatomic) CGPoint center; @

Paragraph. alignment = NSTextAlignmentCenter; The value of NSStrokeWidthAttributeName is an NSNumber object (decimal ). This value changes the stroke width (percentage relative to the font size ). The default value is 0. Only the width of the

Recently, I am very interested in iOS reverse engineering. Currently, iOS reverse engineering books include Hacking and Securing IOS Applications and iOS Hacker's Handbook. The Chinese books include iOS reverse engineering: analysis and practice:

Stroyboard can be seen as a collection of management View images. That is to say, there is no limit on one Storyboard in an iOS project.Therefore, in your APP project, you can place similar views in the same APP to form a group to facilitate

To use multiple threads for processes and threads, you must first understand the two concepts of processes and threads. Here I will give a brief introduction. A process corresponds to an application that is used to open up memory space for

What should I do if the type provided by the system cannot meet our usage requirements, for example, I want to store UIColor in CoreData? At this time, a very powerful storage type in CoreData will be used: transformable describes how to store data

1. Thread Introduction When we need to handle a very heavy task, we need to use the thread to avoid blocking the execution of the main thread (the main thread is mainly responsible for user interaction and related event processing. When we use

      LineChartViewDemo. h   # Import @ Interface LineChartViewDemo: UIView // distance between the horizontal and vertical axes @ property (assign) NSInteger hInterval; @ property (assign) NSInteger vInterval; // display the label @ property (

1. Install CocoaPods Installation method provided on the Internet: $ sudo gem install cocoapods$ pod setupHowever, I found that sudo cannot be used when running on the terminal. sudo: /etc/sudoers is owned by uid 502, should be 0sudo: no valid

UIAlertView of IOS7 does not support customization and cannot be added to subview. But you can use a third-party library git download link https://github.com/wimagguc/ios-custom-alertviewCustom iOS7 AlertView Usage: 1. Download 2. decompress the

IOS applications can only read files from the file system created for the modified program. They cannot be accessed elsewhere. This region is called sandbox and all non-code files must be stored here, example: image, icon, sound, image, attribute

[UIDeviceUniqueIdentifier] One of the alternative methods specified in the document (there are three alternative methods in total ): UniqueIdentifierProperty Available in iOS 2.0 through iOS 6.1UniqueIdentifierAttribute can be used for iOS 2.0 to

-The GET syntax is to obtain resources on the specified URL.-Add the data to the URL indicated by the action in the form of variable = value, and use "?" Connection, and the variables are connected with "&"-insecure, because the data is stored in

Before getting started, let's first introduce the IOS keyboard type: I. keyboard Style The UIKit framework supports 8 types of keyboards Typedef enum {UIKeyboardTypeDefault, // default keyboard: supports all characters UIKeyboardTypeASCIICapable,

IOS study notes (8) UIActivityIndicatorView (activity indicator view) (blog address: http://blog.csdn.net/developer_jiangqq) Author: hmjiangqq Email: jiangqqlmj@163.com UIActivityIndicatorView: Purpose: prompt that the user is loading progress.

Since iOS after iPhone 4s supports BLE, the next generation of these iOS devices are not cheap. debugging with the iOS simulator during testing can save some development costs. How to debug BLE on the iOS simulator? Apple initially gave a

Note: Debugging here refers to using lldb to remotely debug iOS applications Setting a breakpoint refers to setting a breakpoint on the ObjC method. Use Cases: 1. debug the iOS app that has been strip 2. debug dylib of the iOS system that has been

CoreData has never been used before. I tried it recently. It saves a lot of code and is very convenient. Of course, it will only be used. Create a project first By default, the system will add some things to you. As for how these things are made,

Copy the code @ interface Person: NSObject + (void) test1;-(void) test2; @ end // according. the Person class and method defined in the H file are used to execute this line of code. In the memory, the following Person * person = [[Person alloc] init]

In the info. plist file, if the View controller-based status bar appearance item is set to YES, the View controller has a higher priority than the application setting. If the value is NO, the setting of the application prevails. The