CODEWITHSUNDEEP
iosobjective-ciphoneuibutton
Durga Vundavalli
Durga Vundavalli

Reputation: 1828

UIButton dashed underline in Objective c

Normal underline works but dotted undeline doesn't seems to work?

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom]; 
btn.frame = CGRectMake(100, 10, 300, 300);
NSMutableAttributedString *titleString = [[NSMutableAttributedString alloc] initWithString:@"Durga Vundavalli"];

// making text property to underline text-
[titleString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:NSMakeRange(0, [titleString length])];

// using text on button
[btn setAttributedTitle: titleString forState:UIControlStateNormal];
[self.view addSubview:btn];

The following was the enum from documentation:

typedef NS_ENUM(NSInteger, NSUnderlineStyle) {
    NSUnderlineStyleNone                                = 0x00,
    NSUnderlineStyleSingle                              = 0x01,
    NSUnderlineStyleThick NS_ENUM_AVAILABLE_IOS(7_0)    = 0x02,
    NSUnderlineStyleDouble NS_ENUM_AVAILABLE_IOS(7_0)   = 0x09,

    NSUnderlinePatternSolid NS_ENUM_AVAILABLE_IOS(7_0)      = 0x0000,
    NSUnderlinePatternDot NS_ENUM_AVAILABLE_IOS(7_0)        = 0x0100,
    NSUnderlinePatternDash NS_ENUM_AVAILABLE_IOS(7_0)       = 0x0200,
    NSUnderlinePatternDashDot NS_ENUM_AVAILABLE_IOS(7_0)    = 0x0300,
    NSUnderlinePatternDashDotDot NS_ENUM_AVAILABLE_IOS(7_0) = 0x0400,

    NSUnderlineByWord NS_ENUM_AVAILABLE_IOS(7_0) = 0x8000
}

Upvotes: 3

Views: 2028

Answers (1)

Larme
Larme

Reputation: 26096

You can't put only NSUnderlinePatternDot. What if you want 2 lines of dots? You have to use a Pattern and a Style.

[titleString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:(NSUnderlinePatternDot|NSUnderlineStyleSingle)] range:NSMakeRange(0, [titleString length])];

You have to use a mask, as said by the doc:

Discussion
The style, pattern, and optionally by-word mask are OR'd together to produce the value for NSUnderlineStyleAttributeName and NSStrikethroughStyleAttributeName.

Upvotes: 14

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