IOS

NSURL property recordsRecord of some NSURL attributes 1 NSLog (@ "% @", request. URL. absoluteString); 2 NSLog (@ "% @", request. URL. relativeString); 3 NSLog (@ "% @", request. URL. scheme); 4 NSLog (@ "% @", request. URL. resourceSpecifier); 5

Json parsing in iOS contains null, nil, NSNumber, and jsonnsnumber. During iOS development, data is often required to communicate with the server. Json is a common and efficient and concise data format.Symptom However, after several projects, the

IOS Aurora push and ios Aurora push The. p12 file exported from aps_production.cer is the same as the above. Upload the. p12 certificate. If the certificate is invalid, the upload will fail.  Solution:1. first, you need to download a new

Objective-c instance variable access level, objective-c instance In C # and JAVA, both method and variable have strict access level control, so the access level is rarely used in object-c, the reason may be that there is no access-level syntax on

IOS development-Explanation of Singleton mode and ios development Nowadays, there are a lot of people writing Singleton mode on the Internet. There are a lot of basic things, but there are also a lot of versions. It is inevitable that new people

Multi-thread (NSOperation) for iOS development practices) NSOperation encapsulates GCD (underlying layer) and is more object-oriented. NSOperation With NSOperation and NSOperationQueue, you can also implement multi-threaded programming. Detailed

Mac usage tips (Real-time update) and mac real-time update I. Some shortcut keys. There are a lot of such data on the Internet, but I think we should look at our personal habits and use environments. If you use a shortcut, It is a shortcut key. If

Jump to UICollectionViewController and report cocould not load NIB in bundle solution. uicollectionview The error code is as follows: 'Could not load NIB in bundle: 'nsundle (loaded) 'with name 'product'' The custom cell of

IOS sharing and iOS email sharing 1. register an open platform account: https://open.weixin.qq.com 2. Create an application Setting pictures can use a gadgets, details http://www.cnblogs.com/czq1989/p/5073586.html Generally, it takes several

[Code notes] fade out and fade out I ,. 2. Engineering Drawing. 3. Code. ViewController. h #import @interface ViewController : UIViewController@end   ViewController. m # Import "ViewController. h "@ interface ViewController () @ end @

Common NSString operations,   NSString * testStr01 = @ "HelloWord"; NSString * testStr02 = [testStr01 substringToIndex: 5]; // obtain the header (from the beginning ), to does not include the subscript content NSString * testStr03 = [testStr01

Common NSMutableString operations,   // Create a string // empty strings in the variable string make sense NSMutableString * mString = [[NSMutableString alloc] init]; NSLog (@ "mString: % @", mString ); // variable strings cannot be assigned with

JSPatch uses note,   Hotfix is widely known for its role. Both Android and iOS have their own technologies. However, compared with the release of Android on the day (If your project does not require grayscale), iOS hot update is more significant.

IOS sharing and ios sharing In project development, communication between objects is often involved. To reduce the coupling between objects, delegate, icationcenter center, and block methods are used for implementation, you may be familiar with it,

IOS development-use delegate for message transmission In iOS development, passing messages or data between interfaces is the most basic requirement. We can use many methods to achieve this requirement, for example, expose an attribute in the header

IOS --- use XCTest for unit testing Test-driven development (TDD) is a popular development concept. XCTest is an Apple-encapsulated Unit Test Library. The process of using XCTest for unit testing is relatively simple. This blog only briefly

IOS development Note 7: Text, UI interaction details, two animation effects, etc., iosui Text mainly summarizes some issues related to UILabel, UITextField, UITextView, UIMenuController, and UIWebView/WKWebView. UI details mainly summarize some

Multithreading for iOS development-thread status and multithreading for ios development Multithreading for iOS development-thread status 1. Brief Introduction Thread creation: Self. thread = [[NSThread alloc] initWithTarget: self selector: @

Use of FMDB in iOS and iOSFMDB 1. In daily development, we need to use the offline cache to store data into the database and load data when there is no network. In IOS, we use the sqlite3 database, we can also use native SQL, but it is difficult to

NSProxy, nsproxynsobject The NSProxy class is very important in the distributed object architecture. Because of its special functions, NSProxyCocoaThe frequency of appearance in the program is very low.  NSProxy is an abstract class that defines a