swift essential training

) { if motion = = Uieventsubtype.motionshake { var alertController1 = Uialertcontroller (title: "Congratulations.) It worked. ", Message:nil, Preferredstyle:. Alert) var cancelaction = uialertaction (title: "Cancel", Style:.) Cancel, Handler:nil) alertcontroller1.addaction (cancelaction) Self.presentviewcontroller ( AlertController1, Animated:true, Completion:nil) } }This method is inferred at the end of motion, assuming that moti

Swift UI special training 43 Swift APP boot page, swiftui When an APP is loaded for the first time, a boot page is usually used to show features or tell users how to use them. Open our Storyboard, import a Page View Controller, make the following settings, and modify the Transition Style: Set the storyboard ID to PageViewController for our Page View Controller.

"), Optional ("CC")]That is, the type of the original array is [string] and the FlatMap call becomes [string]. This is also a significant difference between FLATMAP and map. If the same array, we use the map to invoke, get the output is this:[Optional ("AA"), Nil, Optional ("BB"), Optional ("CC")]This is the same as the original array. The difference between the two is that. The map function value transforms the element. It does not affect the structure of the array. The FLATMAP will affect the

Web page Production WEBJX article introduction: Design Ability Training: Browsing enough good design is an essential link. In the previous article, "reduce the pain in your service-service to the quality of the website design customer" inside talk about looking for quality customers. So designers want to ensure that the quality of customers continue to work together. It is important to ensure tha

Tags: io sp file on CTI BS SQL MySQL UI# Four is the main function of the external files, respectively, is include,include_once,require,require_once.Include and include_once:if there is something Wrong,they won't throw an error, they would just be ingored.Requre and Require_once:if There is something wrong, Thye would throw a fatal error, and blocking the page.Make good habits, variables and functions are enclosed in {}. function Hello ($name) { Return "Hello {$name}!"; } ?>

motion = = Uieventsubtype.motionshake { var alertController1 = Uialertcontroller (title: "Congratulations, you've succeeded!") ", Message:nil, Preferredstyle:. Alert) var cancelaction = uialertaction (title: "Cancel", Style:.) Cancel, Handler:nil) alertcontroller1.addaction (cancelaction) Self.presentviewcontroller ( AlertController1, Animated:true, Completion:nil) } }This method is judged at the end of motion, and if motion is shaking,

Swift UI special training 39 use Swift to implement the shake function, uiswift Everyone must have used the shake function. during the Chinese New Year, it's not enough to shake the red envelope. So how can we use swift to implement such a cool function. Shaking is a built-in recognizable IOS action. Add the following

Shareview = Shareviewcontroller () Self.presentviewcontroller ( Shareview, Animated:true, Completion:nil) } @IBAction func message (Sender:uibutton) { if Self.cansendtext () {let Messagevc = Self.configuredmessagecomposeviewcontroller () Presentviewcontroller ( MESSAGEVC, Animated:true, Completion:nil) } else {let Erroralert = Uialertview (title: "Cannot send", message: "Your device is not short Function ", Delegate:self, Cancelbuttontitl

Sometimes we fit the entire content of the page, we need to use ScrollView, additional content to get through scrolling.What kind of width and height first, definition, fitness equipment easy.Let PageWidth = PageHeight = 800Then initialize a scrollview in the viewdidload:var ScrollView = Uiscrollview () scrollview.frame = Self.view.bounds scrollview.contentsize=cgsizemake ( CGFloat (PageWidth), CGFloat (pageheight)) scrollview.pagingenabled = True Scrollvie

Swift UI special training 17 SearchBar search entries, uisearchbar The search bar is a simple operation in the UI. Drag a search bar. The most important attribute in the search bar is the Placeholder, that is, the Placeholder on the right side of the graph. For example, if you enter "enter a keyword", It is shown as follows: Set the background color: The Options Option will make some adjustments

ImageView is a component we often use, but we find that there is no design for picture borders in the property editor of storyboard. Add a normal picture to the view, the effect is this:Can see, the white background of the dark picture, the effect is always a little abrupt, we want to add a shadow border to transition a piece and background, open the picture belongs to the controller code, the class is displayed in the picture named image, now to set its border. Enter the following code in Viewd

After we used our own defined controller, we found that the restaurant on the TableView was gone, so we add the data, add a new restaurant class, this class we don't need to inherit the class of the system, just add a swift file.Import Foundationclass Restaurant { var name = "" var location = "" var score = 10}I've simply built a class that represents restaurant names, restaurant locations, and restaurant ratings, all with default values.And

,web:UIWebView){ Let aurl = NSURL(string: "http://" + url) Let urlrq = NSURLRequest(URL: aurl!) web.loadRequest(urlrq) } //The page starts loading Func webViewDidStartLoad(webView: UIWebView) { loading.startAnimating() UIApplication.sharedApplication().networkActivityIndicatorVisible = true } / / page end loading Func webViewDidFinishLoad(webView: UIWebView) { loading.stopAnimating() UIApplication.sharedApplication().networkActivityIndicatorVisible = fals

We all know that when programming the iOS interface there are Iboutlet and Ibaction, the former refers to the latter is the operation, Ibaction has a parameter sender, used to point to the Operation object, before I published the forecast of the small program that can be seen, If we need a button click event then use Ibaction, if it is a label to show things, then use Iboutlet.Now, let's talk about some of the event types in ibaction:1.Touch down Inside: Touch, as long as we do not move, even if

Swift UI special training 1 interaction, swiftui We all know that IBOutlet and IBAction are available during IOS interface programming. The former refers to the latter as an operation, and the IBAction has a parameter sender, which is used to point to the operation object, the weather forecast applet I released earlier can be seen. If we need a button click event, we can use IBAction, if a Label is used to

Swift UI special training 31 Slider, uislider A slider is used to show a setting or a progress in a gradual and gentle manner. The base class of the slider is UISlider, and the attributes are relatively simple. It mainly refers to the maximum and current values of the minimum value. The settings are as follows: We can see that there are two options below: The minimum image and the maximum image. We

Swift UI special training 41 implements step per value transfer using pure code, uistepper I have previously discussed how to capture the value of a control through storyboard. Now let's try to implement the same function through code-only. First define a stepper and a label, and use the label to display the current value of stepper. Self. priceStepper = UIStepper (frame: CGRectMake (150,120,100, 20) self.

Swift UI special training 19 TextView multi-line text, uitextview Sometimes the content we want to display cannot be placed in one line of text, which requires multiple lines of text TextView. When dragging, note that the upper limit should not exceed the small icon of the battery. You can change the content of multi-line text in the Attribute Editor, and press and hold the control key and the Return

Swift UI special training 10 view commonalities, swiftui When talking about views, let's take a look at the view content: 1. View implementation: The base class of the view is UIView. 2. View Mode: The size filling Mode, which is used to fill the screen when the size exceeds the value we set. 3. Tag: Tag number View behavior: There are mainly interactions and plotting. Interactions refer to some use