IOS

Problem description In general projects, macro definitions can be used to determine whether the simulator is a real machine, which is undoubtedly effective. # If target_iphone_simulator # define simulator 1 # Elif target_ OS _iphone # define

After mastering the basic concepts of iOS, we started to get started with the topic. We started to use sup, which provides very powerful development functions. We can use it to generateCodeTo develop offline mobile apps. The basic process is to

Documentation:Applications that want to use custom fonts can now include those FontsIn their application bundle and register those fonts with the system by includingUiappfontsKey in theirInfo. plistFile.The value of this key is an array of strings

Original address: xmppframework iOS development (4) Message // Receive the message-(void) xmppstream :( xmppstream *) sender didreceivemessage :( xmppmessage *) Message {// nslog (@ "message = % @", message ); // message content nsstring *

From: http://chensmiles.blog.163.com/blog/static/121463991201296101228806/ If you 've ever found yourself scratching your head thinking "Now which one shoshould I be using, nsnumber or nsinteger ?" The short summary below shocould help. Nsinteger

I have been engaged in OC work for more than a year now, and I have learned a lot from the "protocol" that I first came into contact with OC, to the delegation and protocols that can be seen everywhere in the code.First, we should understand that

Remote-control Users can use external interfaces to control application music. The official recommendation is to receive remote-control events when the view is displayed.   -(Void) viewdidappear :( bool) animated { [Super viewdidappear: animated]; [

1. In addition to the lock, the system also provides conditions to ensure the proper sequence of execution of tasks in your application. A piece serves as a gatekeeper, blocking a given thread until it represents a true condition. In this case, the

Although the IOS native UI control has a very good display effect, but app developers still want their own products to be different, so custom UI appearance has become a must for every app product development. Today, we will create a demo to

Always remember the life cycle of views Do not access self. View in the init Method Use Data Source protocols (Data Source Protocol) to clearly distinguish data from the View Uiviewcontroller Use an existing navigationitem object

The Code is as follows:# Import @ Interface dropdownlist: uiview {Uitextfield * textfield; // text input boxNsarray * List; // drop-down list dataBool showlist; // whether to display the drop-down listUitableview * listview; // drop-down listCgrect

1. the mutable data type cannot be declared as copy attributes, such as @ property (nonatomic, copy) nsmutablearray * array; @ property (nonatomic, copy) nsmutabledictionary * dict, then there will be problems during initialization, self. array =

Original address: xmppframework iOS development (6) chat room Chat Room // Initialize the chat room principal * roomjid = [xmppjid jidwithstring: room_jid]; xmpproom = [[xmpproom alloc] Principal: Self jid: roomjid]; [xmpproom activate: xmppstream

The mbprogresshud special effect is also used in the open-source Chinese IOS client. It is mainly used to display a transitional role for applications. It is often used to open a networked page loading process to prevent false positives, if the

Usage of sound • Sound Effect■ Click the button ■ warning ■ short voice accompanied by user actions• Sounds of any length (music, podcasts, and speeches) • audio streams from network services • recorded soundsHow hard is this?• Playing sound on a

Please indicate the article link at the beginning of the Post. Please support originality. I have been wondering whether there are two ways to declare variables in objective_c. Today I am free to discuss it with netizens and I have learned a little

update iphone 5from:https://gist.github.com/Jaybles/1323251- (NSString *) platform{ size_t size; sysctlbyname("hw.machine", NULL, &size, NULL, 0); char *machine = malloc(size); sysctlbyname("hw.machine", machine, &size, NULL, 0);

Original address: opencv for iOS Study Notes (10)-mark detection Summary If you keep following our tutorial, you can run the program as follows: Even if we do not use a three-dimensional rendering engine for visualization, we have obtained all

The previous Sina Weibo demo has completed the authentication. Next we will start loading and displaying Weibo-related content. In fact, the main task is to call the Weibo API to load the JSON data, parse the data, and organize the data in tableview.

Statement: I have not verified the method because I have found that this method is not completely accurate before using nschinesecalendar on IOS, I am too lazy to use the C ++ method to implement it. In addition, what I do is a simple function. It