The way Swift declares variables is similar to JS. Basic types are basically the same as Java, with more character types.Let: used to declare constants;var: used to declare variables;Basic types are: double,float,int (numeric type), Boolean (Boolean type), character (character type), Tuple (Ganso);At this time a friend to the tuple (Ganso) did not understand. In mathematics there is the concept of Ganso, a friend who learns the Java language knows that it actually represents a collection, a set
Today lecture a bunch of control, mainly have Uiimageview,uiview,uibutton,uilable,uitextfiled,uitextview, including progress bar, buffer ring switch usage, more difficult isUIButton some of the application of display states, there areuitextfiled the uitextfileddelegate protocol, call some time nodes in the protocol to achieve the desired result; Today, in class, the mind is filled with the application of various control methods and properties, each control has a lot of properties and methods,
#import"RootViewController.h"@interface Rootviewcontroller () @end @implementation Rootviewcontroller- (void) viewdidload {[Super viewdidload]; /** * Uipagecontrol pagination control, provides the following features: 1. Show the current total number of pages 2. The current page of the display is 3. Toggle the current display of the Pagecontrol to display a different interface*/ //1. Creating a controlUipagecontrol *pagecontrol = [[Uipagecontrol alloc] Initwithframe:cgrectmake ( -, -,260, -)];
First, in the project's info column, see the name of the storyboard, which is typically mainThen open storyboard, select the control you want to get, here is Viewcontroller, in the Right Identity tab bar Storyboard ID, fill in the name, here to fill in the MyviewcontrollerOK, now it's time to get the Viewcontroller.According to bundle get storyboard Uistoryboard *story = [Uistoryboard storyboardwithname:@ "Main" Bundle:[nsbundle Mainbundle]];Get to Viewcontroller uiviewcontroller *myviewcontroll
The example app below demonstrates the use of the following controls. You can use the slider, step control, and button to control playing an animation in the Image view.
Uiimageview)
Slider (uislider)
Step control (uistpper)
Shows the running effect of the sample app:
Animation effect in Image viewCode:
-(Ibaction) toggleanimation :( ID) sender {
If (bunnyview1.isanimating ){[Self. bunnyview1 stopanimating];[Self. bunnyview2 stopan
IOS controls with multiple options for animation (1)
First:
This program has two levels. One is the bar with UITextField on the top, and the other is the view selected from the drop-down list. The selected view has four custom uiviews.
We first define a UIViewController named MyViewController, and then the bar on the top is TopBarView. The view selected from the drop-down list is TypeSelectView. A custom
TableViewController-city list Analysis of iOS advanced controls
Today we are going to present the information of a city. Let's show you how it works. I think it should be absolutely practical. ^_^
Now, let me give you a brief description of the steps, because the technical blog does not really write much, and I don't know how to explain it so that everyone can understand it, however, I write a blog with an
Ios controls the trigger frequency of button click events
This problem is often encountered in projects:
When a button is clicked, a corresponding click event is triggered. For example, a network request is sent to the server or a pop-up dialog box is displayed.
However, if a user clicks more frequently, the click event will be triggered continuously to confuse the UI.
My solution to this problem is to set
UIActivityIndicatorView and iosuiactivity of IOS Custom Controls
Original blog, reprinted, please indicate the sourceBlog.csdn.net/hello_hwc
Preface This series is not designed to allow readers to take the past and use it directly. After a while, I will upload some files on github for use. This series is intended to provide some ideas for custom controls.Content of this article
Describes the process of i
Ios code creation controls and formatting
1. UIView
The control added to the View is x, and y is calculated from the upper left corner of the View.
2. UIButton
UIButton contains UIlable and UIImageView
SetTitle must be used to set text. titleLabel. text cannot be changed directly because the text status is unknown.
TitleLabel. font when setting the text font
3. NSArray lazy loading
@ Property (nonatomic,
;RunWill pagecontrol.enabled = NO; Comment out Join[Pagecontrol addtarget:self Action: @selector (change:) forcontrolevents:uicontroleventvaluechanged];In the Join method-(void) Change: (Uipagecontrol *) Pagecontrol{NSLog (@ "index:%d", pagecontrol.currentpage);}RunWillPagecontrol.numberofpages = 10;Pagecontrol.currentpage = 2;SwitchPagecontrol.numberofpages = 1;Pagecontrol.hidesforsinglepage = yes;//If it's a single page, hide it.RunIn the real project development time is to customize the contr
First, two such problems were encountered in the project.
The first place-is the comment interface of the Headerview, because directly put their own xib loaded put in there, Xib Setframe wrote a lot of = = + +, each time the rolling, will frequently call xib method Setframe, resulting in the final xib disappear or more and more large. Yes , Headerview height is blocked, how to set up also no use. Perfect after packing.
Workaround:
Second place-the header text in TableView adjus
Although always know that X-code must provide localization of language settings place, but has also made a record, some time the Chinese, or need to use code to control, the lower right corner of the keyboard, Navagiton return using code modification, call system camera, is also the appearance of English prompts and buttons, This time there is no way to modify the code through the local Chinese-only operation, very simple, add a bool type of value on the line, as follows:Just add a "localized re
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