Swift

var ivar = [:]ivar.classname//__nsdictionaryivar i = 1i.classname//Error: ' Int ' does not has a member named ' ClassName 'if you want to get the type of a primitive and you had to use bridgetoobjectivec () var i = 1i.bridgetoobjectivec ().

Today, when locating a photo to choose a crash, the real-time test all iphone is working, and the ipad Air iOS8 is used to reproduce the problem. Let me summarize the bugs that I tested a day before I tested them.Phenomenon: Click on profile picture,

(1) Variables and constants(2) Basic type(3) Forced conversion(4) Type bool(5) Meta-group(6) Optional value Variables and constants var str = "Hello, Playground" Let Maxnum = 888 Specify type var str1:string = "Test" var

---Array, mainly used to save data, in Swift, the creation of arrays is more powerful than OC, but at the time of initialization, found a few problems, perhaps because of self-study reasons, through the search, reluctantly persuade themselves

Summary: Swift has a super-rigorous initialization method that not only reinforces the position of the designated initialization method, all the unmodified init methods need to ensure that non-optional instance variables are initialized in the

In addition to the use of uilocalnotification to enable the push of local messages (you can set the push content, push time, beep), you can also set the number of reminders in the top right corner of the application.The following shows how to set

Through the Corelocation class, the location information obtained is the geographical information expressed in longitude and latitude, and can be deserialized into an address by the Clgeocoder class. Conversely, latitude and longitude can also be

In addition to acquiring the location data of the device, the corelocation can also obtain the orientation of the device (which can be used to implement the compass function, etc.).The 1,clheading object provides heading-related data through a set

Original articles, welcome reprint. Reprint Please specify: Dongsheng's Blog Branch statements are also called conditional statements, and the SWIFT programming language provides three branch statements of if, switch, and guard.if StatementThe

Set the Transform property of the View object to achieve a variety of animation effects.1, moveIn the same plane, the control translates a certain distance in a straight line direction. 12345 //每次都从当前位置平移self.imageView.transform

One, Core data introduction1,core data is a persistent storage framework that appears after iOS5, providing an object-relational mapping (ORM) capability to transform objects into data and to restore data saved in a database to objects.2, although

Like the Address Book in iOS, by clicking the alphabetical index to the right of the Contact table, we can quickly navigate to the group of contacts that are headed with that letter.to implement the index, we only need two steps:(1) Implementing an

If you use Uidatepicker to set the mode to Countdowntimer, you can make the control work as a countdown timer. As follows:The following is a code example: 1234567891011121314151617181920212223242526272829303132333435363738394041424344454

The game has background music and sound effects. Let's create a sound-management class to play the background music, and click on the screen to play the corresponding sound.Sound Management class Soundmanager.swift 1234567891011121314151

Here is an example of an asynchronous request to load a picture data 1234567891011 //定义NSURLlet imgURL:NSURL=NSURL(string:"http://hangge.com/blog/images/logo.png")!//定义NSURLRequestlet

We usually inherit skspritenode to implement the elements in the game, in addition to using the image as a textured skin. We can also use animated texture sets for animation playback. The animation texture set is also very simple to make, first of

iOS calendar events can be read, added, and so on via Eventkit. But what we found on the Internet was written using OBJECTIVE-C.Here is a swift version of the sample that shows you how to add an event and get all the list of events. 1234

More concise than the Objective-c,swift language. Sometimes we need to convert some of the original objective-c code into Swift, which summarizes a variety of common scenarios.1, migration of constructorsObjective-c is: 12

original articles, welcome reprint. Reprint Please specify: Dongsheng's blog swift key) set, one is the value ( value) collection. A key collection cannot have duplicate elements, and a collection of values can be duplicated, and the keys and values

??Original articles, welcome reprint. Reprint Please specify: Dongsheng's BlogIn other languages such as C, Objective-c, and Java, there are two ways to convert integers:From the small range number to the large range number conversion is