coded ui training

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 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 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

in the button.(2) Layout_gravity control is the relative position of the view skill relative to the immediate parent class, such as a relativelayout containing a button, setting layout_ The Gravity property controls whether it is itself on the left side of Relativelayout, on the right or the top, or below.The difference between margin and padding?(1) Padding is an inner border, which refers to the inner content of the control, such as the margins of the text/picture distance from the control(2)

callback method:Func Numberofcomponentsinpickerview (Pickerview:uipickerview), Int { return citys.count } func Pickerview (Pickerview:uipickerview, Numberofrowsincomponent component:int), Int { return citys.count }Each represents a three-part, three-row, each-section header. The results are as follows:Now let's add the real-world features of the tags and let them show the cities we selected in the slots:Func Pickerview (Pickerview:uipickerview, Didselectrow row:int, i

In the previous session, we set the transition in the second scenario by selecting the modal type, not push. So the user will need to return manually after input. There are two buttons on the navigation bar, complete and canceled. So we're going to reverse the two buttons, we need to add @ibaction at the source of the event. The code is as follows: @IBAction func unwindtolist (segue:uistoryboardsegue) { }The above code should be added to Restaurantlistviewcontroller, unwindtolist represe

Sometimes we need a frame to confirm or return when we do the operation, which is alertview. In the previous project, when we clicked the Stop button, the pop-up window was confirmed. Pop-up window This action occurs when we click the Stop button, so the Alertview code is added to the Stop button action, the code is as follows:@IBAction func Stopbutton (Sender:uibutton) {let stopdownloadconfirm = Uialertview (title: "Warning", message: "Downloading, Are you sure you want to cancel

) }Now we click the Edit button, the effect is as follows:Clicking Finish will return. Click on the left side of the red icon will slide out of the Delete button, click the button will delete the current line, just need to add a new method in the controller, the code is as follows: Override Func TableView (Tableview:uitableview, Commiteditingstyle Editingstyle:uitableviewcelleditingstyle, Forrowatindexpath indexpath:nsindexpath) {if Editingstyle = = uitableviewcelleditingstyle.delet

We have now added two scenarios, although we have the default view controller, but we would like to customize our own controller, we have been working on the storyboard, and now some code.Right-click New fie in the project catalog, select Cocoa Touch Class in source for iOS, set such as:Click Next and you can see that Xcode has created a class that inherits the Uiviewcontroller:Check the new restaurant's Viewcontroller, then select the class editor on the right, choose our own class in the custo

First, we create a new project, and then to localize, localization is based on user-set language and so on information to display. So how to set it, open our project, click on supporting files in the Info.plist.The first column on the right selects China, so if you encounter some system components, it will automatically become Chinese.Now let's edit the first page. Add a text box to the storyboard. The simple part I can't, notice here the placeholder (placeholder), represents the display informa

If you set the date in your iphone, you'll be familiar with the date slot. Its base class is Uidatepicker. The main attributes are date, time, and Countdown,In mode you can choose only dates, only time, or both.Local is the time zone.Interval is the time interval.The following are some constraints.The timer is the countdown interval.Drag one to storyboard and run for a look at the effect:Still full of cool. Now let's set its style to Countdown, cut down timer:You can see that the countdown style

The Web browser is different from the previous webview, our web browser does not require the user to enter the preceding HTTP, and can realize the automatic layout, this word is a summary of the previous words. To create a new project, and then drag a text label, let's look at some of the tools in the lower right corner, the first one being the alignment constraint:The second one is the pin constraint, which aligns up and down:The third one is to clear the constraints and clear the Set constrain

Sometimes our page is very large need to scroll only with scroll bar scrolling can be less precise, this need to use page Control, as we usually operate the iphone, each page has some apps, the number of pages is marked with small dots, each time a swipe will switch the page, The dots of the currently paused page are lit. For example, we usually use the weather forecast, each page can only show the weather of one place, each change page can switch to other cities. The properties of Page control

A slider is a gradual and gentle way to show a setting or a progress. The base class of the slider is UISlider, and the properties are relatively simpleThe primary is the minimum value and the current value.Settings are as follows:You can see below there are two options, minimum image and maximum value image, we import two pictures (sorry not too good picture ...) )：Its main event is the value change, similar to the one we encountered before, and now we have the label display the current value o

Switches we are familiar with, usually in the use of the iphone is often encountered, mainly used in the program to turn on or disable a setting. Its properties are relatively simple:Status state: Open or closeWhat's the color when it's open?What color is the round button?When opening and closing, use the picture to make the button background.As with the previous space practice, we use a label to show the state of the switch. @IBAction func SW (sender:uiswitch) { if (Sender.on) {

In the first few words we took care of the layout, this word we have to add all the references, is connected to the controllerUiviewcontroller { @IBOutlet weak var textfield1:uitextfield! @IBOutlet weak var web1:uiwebview!Then the agent, first look at our mobile phone scene interface three buttons:The first button is the controller itself, the second button is the first reaction of this interface, the first reaction of our interface is the URL of this box, the third button is to exit.When

controls, like views, interact with the user and what is a control? The sliders, switches, and so on that we use are all controls. The base class for the control is Uicontrol. The contents of the control are as follows:It is mainly selected, can be used and highlighted. We use a button to show:Unchecked state:Blue Word on the white background, now we tick selected:When selected, it turns into a blue-bottomed white, flipped, which is also in line with our daily habits.If highlighting is selected,

Build a method to load a Web page request:Func Loadurl (url:string, Web:uiwebview) {let aurl = Nsurl (string:url) let urlrq = Nsurlrequest (url:aurl!) Web.loadrequest (URLRQ) }Then since the controller inherits the proxy, then it is necessary to implement some proxy methods, do not forget to associate the pinion indicator with the controller, and use it to indicate the page read event. @IBOutlet weak var loading:uiactivityindicatorview!Apply it to the proxy method of the

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