Introduction to Swift Development: button (UIButton)

Reprint please declare source: http://blog.csdn.net/jinnchang/article/details/44403537

1. UIButton Overview

Inheritance: UIButton, Uicontrol, UIView

Control style:

2. Initialization of UIButton(1) using the Buttonwithtype Build button, there are six types of the following:

Enum Uibuttontype:int {case    custom//custom style case    system//Rounded rectangle case    detaildisclosure//Blue small arrow case    Infol ight//Bright exclamation case    infodark//Dark exclamation case    contactadd//cross plus}

(2) Using the Frame custom button

3. Examples of Use

Override Func Viewdidload () {///1, use the existing Type Build button let Commonbutton = Uibutton.buttonwithtype (.  System) as UIButton//Modify button position and size Commonbutton.frame = CGRectMake (SELF.VIEW.FRAME.WIDTH/2-100, 100, 200, 200)// Set button background picture Commonbutton.setbackgroundimage (UIImage (named: "Logo.jpg"), ForState:UIControlState.Normal)//Add Click event C Ommonbutton.addtarget (Self, Action: "Buttonactions:", forControlEvents:UIControlEvents.TouchUpInside)//Set button label com Monbutton.tag = 1//2, custom button Let CustomButton = UIButton (Frame:cgrectmake (SELF.VIEW.FRAME.WIDTH/2-100, 400, 2 00, 200))//Set button caption Custombutton.settitle ("Custom", ForState:UIControlState.Normal)//Set button caption color CustomButton. Settitlecolor (Uicolor.redcolor (), forState:UIControlState.Normal)//Set Button caption Shadow Custombutton.settitleshadowcolor (UIC Olor.blackcolor (), forState:UIControlState.Normal)//Set button Shadow Custombutton.titlelabel?. Shadowoffset = Cgsizemake (1.0, 1.0)//Set button caption font style Custombutton.titlelabel!. Font = uifont.systemfontofsize (18)//Set button title wrap mode custombutton.titlelabel!. Linebreakmode =. Bytruncatingtail//Set button background color Custombutton.backgroundcolor = Uicolor (red:0.8,green:0.8,blue:0.8,alpha:1.0)//Set button inside Part content Margin Custombutton.contentedgeinsets = uiedgeinsetsmake (-100, 0, 0, 0)//Remove the image color burn in the highlighted state Custombutton.adjustsimag    ewhenhighlighted = false;    Remove Image Color Burn custombutton.adjustsimagewhendisabled = false in disabled state;    Add a button to press the Glow effect custombutton.showstouchwhenhighlighted = true; Add Click event Custombutton.addtarget (self,action: "Buttonactions:", forControlEvents:UIControlEvents.TouchUpInside)// Set Button Label Custombutton.tag = 2 Self.view.addSubview (Commonbutton) Self.view.addSubview (CustomButton)}///response button click Thing Piece func buttonactions (sender:uibutton!) {println (Sender.tag)}

4, ForstateThe function of this parameter is to define the state in which the text or picture of the button will appear. There are several states:

• normal (normal state)
• highlighted ( pressed state)
• disabled ( disabled state)
• Selected ( selected (finger has left)
• application ( Span style= "White-space:pre" > application flags)
• reserved ( reserved state)

5. The difference between two ways to set the background image

• Setbackgroudimage: Picture will be stretched
• SetImage: Picture remains the original size

6. ConclusionProject on Github address: Uibuttonsample Article last updated: March 18, 2015 10:11:03. the resources are as follows:
(1) UIButton Class Reference
(2) UIKit User Interface catalog:buttons

Introduction to Swift Development: button (UIButton)