IOS

  # Include   + (Nsarray*) Findallof :(Class) Defaultclass { IntCount =Objc_getclasslist(Null,0); If(Count 0) { @ Throw@ "Couldn't retrieve obj-C Class-list"; Return[Nsarray Arraywithobject: Defaultclass]; }   Nsmutablearray*

The iPhone simulator shows the same appearance as the iPhone, but the iPad does not have the iPad. How can I display the Home Key. Actually, the Home key is used. however, if your screen resolution is not high enough, the system will not display

Recently, xcode was upgraded to 4.2, And the SDK is ios5. In iOS 5, nsoperation that previously worked normally will crash. The cause of the crash is that the operation in the queue is canceled, but the operation has not started yet. The solution

A simple web application was developed some time ago. It is mainly used to automatically compile IOS applications and simplify the release difficulty of IOS applications. Since the intensive computing part of the compilation task is mainly

Http://blog.csdn.net/duanyipeng/article/details/7101829 I. iOS app status machines have five statuses: 1. Not running: the application has Not been started, or the application is running but is stopped by the system on the way. 2. Inactive: the

The content is actually very simple, but sometimes we forget it. When we set rightBarButton/leftBarbutton, sometimes we find that the system is not very nice and we want to customize it. So we have this idea: Directly add the Code as follows:

Getting started with the official website: http://open.weixin.qq.com/document/gettingstart/ios /; In fact, it is already very detailed. The following are my notes: 1. if "URL scheme" is not added to the Application id you have registered, "Return (

UIInterfaceOrientationPortrait: normal UIInterfaceOrientationPortraitUpsideDown: Convert to 180 degrees UIInterfaceOrientationLandscapeLeft: Turn left 90 degrees UIInterfaceOrientationLandscapeRight: Right turn 90 degrees 1. After creating an

ASIHTTPRequest The update has been stopped for a long time and iOS5 is not supported. Therefore, this SDK will not be used in the future. Official Address: http://allseeing-i.com/ASIHTTPRequest/   AFNetworking There are two stable owners, which can

I. Overview KVO, that is, Key-Value Observing, provides a mechanism. When the attribute of a specified object is modified, the object will receive a notification. In short, KVO automatically notifies the corresponding observer after the attribute of

1.1 create a Single View app template project named Localization. 1.2 after the creation, you can see the following working directory structure file. Click InfoPlist. strings to view the properties on the right and add a language in the

The first step is to generate an xmppstream object and set the delegate _ XmppStream = [[XMPPStreamalloc] init]; [_ XmppStreamaddDelegate: selfdelegateQueue: dispatch_get_main_queue ()]; Step 2: Set the login account name and server name NSString *

Float systemVersion = [[[UIDevice currentDevice] systemVersion] floatValue]; // iOS SystemVersion [[UIDevice currentDevice] name]); // Name of the phone as named by user [[UIDevice currentDevice] uniqueIdentifier]); // iOS5.0 and later this method

Use ios global variables 1. Use static variables 2. Use Singleton class 3. Set global variables to AppDelegate. For example, define and use a global variable "isLogin" AppDelegate. h @ interface AppDelegate: UIResponder @ property (strong,

Memory partition: 1) stack: the stack zone is automatically allocated and released by the compiler, and stores the parameter values of functions and the values of local variables. The operation method is similar to the stack in the data structure.2)

In recent projects, image security needs to be processed to ensure that users (even jailbreaking users) cannot view the images downloaded from the server. After a variety of methods, it is found that it is most convenient to use base64 to encode the

// For the error message NSError * error; // create the File Manager NSFileManager * fileMgr = [NSFileManager defaultManager]; // point to the file directory NSString * documentsDirectory = [NSHomeDirectory () stringByAppendingPathComponent: @

Reference: http://marshal.easymorse.com/archives/3296 There are some basic design patterns in iOS: Delegation Protocol Model-vew-controller Target-action Notification Declared properties The following describes the usage of each design

I started to contact PHP yesterday and didn't learn iOS, but I still wrote People who are familiar with Visual Studio and use XCode will always have various complaints. One of the common complaints is:XCode's terrible code format and intelligent

C # If I write more, I forget that there is a Forward Declaration. It took half a day to see @ class. Write this topic today.   1. Why do we need a pre-declaration? Pre-declaration helps avoid circular dependency. For example: interface A:NSObject- (