Use of Swift-button (UIButton)

1, the creation of the button
(1) There are four types of buttons: Uibuttontype.contactadd: Front with "+" icon button, the default text color is blue, with touch when the highlight effectuibuttontype.detaildisclosure: Front with "!" icon button, default text color is blue, with touch highlighting effectuibuttontype.system: Front without icon, default text color is blue, with touch highlighting effectuibuttontype.custom: Custom button, front without icon, default text color is white, no touch highlighting effectUibuttontype.infodark: for exclamation mark "!" Round button uibuttontype.infolight: for exclamation mark "!" Round button

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//创建一个ContactAdd类型的按钮var button:UIButton = UIButton.buttonWithType(UIButtonType.ContactAdd) as UIButton;//设置按钮位置和大小button.frame=CGRectMake(10, 150, 100, 30);//设置按钮文字button.setTitle("按钮", forState:UIControlState.Normal)self.view.addSubview(button);

(2) for the custom custom type button, the code can be simplified to:

1	varbutton = UIButton(frame:CGRectMake(10, 150, 100, 30))

2, the text setting of the button

123	button.setTitle("普通状态", forState:UIControlState.Normal) //普通状态下的文字button.setTitle("触摸状态", forState:UIControlState.Highlighted) //触摸状态下的文字button.setTitle("禁用状态", forState:UIControlState.Disabled) //禁用状态下的文字

3, button text color settings

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button.settitlecolor ( uicolor .blackcolor (), forstate:. normal ) //the color of text in normal state Button.settitlecolor ( uicolor .greencolor (), Forstate:. highlighted ) //touch-state text color Button.settitlecolor ( uicolor .graycolor (), Forstate:. disabled ) //the color of text in disabled state

4, Button text shadow color settings

123	button.setTitleShadowColor(UIColor.greenColor(),forState:.Normal) //普通状态下文字阴影的颜色button.setTitleShadowColor(UIColor.yellowColor(),forState:.Highlighted) //普通状态下文字阴影的颜色button.setTitleShadowColor(UIColor.grayColor(),forState:.Disabled) //普通状态下文字阴影的颜色

5, button background color setting

1	button.backgroundColor=UIColor.blackColor()

6, button text icon settings

123	button.setImage(UIImage(named:"icon1"),forState:.Normal)  //设置图标button.adjustsImageWhenHighlighted=false//使触摸模式下按钮也不会变暗button.adjustsImageWhenDisabled=false//使禁用模式下按钮也不会变暗

7, set button background picture

1	button.setBackgroundImage(UIImage(named:"background1"),forState:.Normal)

8, Button Touch Click event Response

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//不传递触摸对象（即点击的按钮）button.addTarget(self,action:Selector("tapped"),forControlEvents:UIControlEvents.TouchUpInside)func tapped(){   println("tapped")}//传递触摸对象（即点击的按钮），需要在定义action参数时，方法名称后面带上冒号button.addTarget(self,action:Selector("tapped:"),forControlEvents:UIControlEvents.TouchUpInside)func tapped(button:UIButton){   println(button.titleForState(.Normal))}

common types of touch events:TouchDown: Single Touch press event, touch screentouchdownrepeat: Multi-touch press event, touch count greater than 1, press 2nd, 3 or 4th fingerTouchdraginside: Touch while dragging inside the controlTouchdragoutside: Touch when dragging outside the controlTouchdragenter: Touch when dragging from outside the control to insideTouchdragexit: When touch is dragged from inside the control to the outsideTouchupinside: Touch and lift events within a controlTouchupoutside: Touch lift events outside the controlTouchcancel: Touch Cancel event, that is, one touch is canceled because it puts too many fingers, or the phone interrupts

Use of Swift-button (UIButton)