The UIButton of ios-oc-basic control

UIButton

Essential controls in iOS development, this article lists commonly used properties and methods (note that the Xcode version is 7.2)

1. Set the type of the button

+ (Instancetype) Buttonwithtype: (Uibuttontype) ButtonType;

This is a class method that returns directly to a UIButton object.

Statement: UIButton *btn=[uibutton Buttonwithtype:uibuttontypecustom];

Parameter is an enumeration type that represents

Uibuttontypecustom,//custom type

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Uibuttontypesystem Ns_enum_available_ios (7_0), ///Ns_enum_available_ios(7_0), which means it is not available after IOS7.0, system default type

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uibuttontypedetaildisclosure,//, just explain it.

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uibuttontypeinfolight,//Bright exclamation mark

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uibuttontypeinfodark,//Dark Exclamation

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uibuttontypecontactadd,//Plus

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Uibuttontyperoundedrect = uibuttontypesystem//System Type

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2. Setting the title

-(void) Settitle: ( Nullable   nsstring *) title forstate: (uicontrolstate) state;

statement: [btn settitle:@ "Hello,world" forstate: uicontrolstatenormal];

This is an object method to set the font displayed on the button, the first parameter is to set the actual content, the second parameter is the state of the button, is an enumeration type, respectively, there are

：

uicontrolstatenormal//stateless, as system default state

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uicontrolstatehighlighted//highlight state, usually used when the user clicks, to distinguish whether clicked

This is when you click, the loose state of your finger disappears and the text disappears.

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uicontrolstatedisabled//disabled state, must be disabled to set

btn. enabled = NO ;, not set invalid

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uicontrolstatefocused Ns_enum_available_ios (9_0)//This is only after IOS9

uicontrolstateapplication//When application flags

uicontrolstatereserved//internal Reserved No tube

3. Setting the background color

Properties BackgroundColor

btn. BackgroundColor =[uicolor redcolor];

4. Setting up a picture

Button has two places to set the picture, one is to set the button directly to the picture will not show the title, the second is the background image can display the title.

Set the button directly to the picture, and the current state

-(void) setimage: ( Nullable UIImage *) image forstate:(uicontrolstate) state;

Background image must also be set to a state, different states can correspond to different background pictures

-(void) setbackgroundimage: ( Nullable UIImage *) image forstate: (uicontrolstate) State

5. Set the font size

btn. Titlelabel . Font =[uifont systemfontofsize:];

6. Set the font color

[btn settitlecolor: [uicolor greencolor] forstate:uicontrolstatenormal];

8. Setting rounded Corners

When the value is normal for a button length or width, it is rounded,

btn. Layer . Cornerradius =50;

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This article is from the "Red Corner Antelope" blog, please be sure to keep this source http://2254359459.blog.51cto.com/10776102/1742839

The UIButton of ios-oc-basic control