Question

我正在尝试使用自定义UIColor浅灰色突出显示我的UIButton并使文本变为白色...但我不知道如何做到这一点...这是我创建UIButton的任何帮助将不胜感激。

cancelButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    cancelButton.frame = CGRectMake(10.0, calculatorView.frame.size.height-55, 100.0, 45.0);
    [cancelButton addTarget:self action:@selector(calculateMethod:)forControlEvents:UIControlEventTouchDown];
    [[cancelButton titleLabel] setFont:[UIFont fontWithName: @"Super-text" size:20.0]];
    [cancelButton setTitle:@"Cancel" forState:UIControlStateNormal];

Answer 1

要突出显示白色文字，请执行以下操作：

[cancelButton setTitleColor:[UIColor whiteColor]
                       forState:UIControlStateHighlighted];

要获得更改背景，您需要执行setBackgroundImage：forState：并使用带图案颜色的UIImage或子类UIButton，并在setHighlight：方法中设置适当的背景颜色。

编辑：Swift 2.x版

cancelButton.setTitleColor(.whiteColor(), forState: Highlighted)

编辑：Swift 3.0版

cancelButton.setTitleColor(.white, for: .highlighted)

Answer 2

您可以创建图像以用颜色填充背景。

[cancelButton setBackgroundImage:[self setBackgroundImageByColor:[UIColor blueColor] withFrame:cancelButton.frame cornerRadius:0] forState:UIControlStateHighlighted];
[cancelButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];

此方法使用颜色 backgroundColor 的纯色背景构建按钮大小的图像。

-(UIImage *)setBackgroundImageByColor:(UIColor *)backgroundColor withFrame:(CGRect )rect cornerRadius:(float)radius{

    UIView *tcv = [[UIView alloc] initWithFrame:rect];
    [tcv setBackgroundColor:backgroundColor];

    CGSize gcSize = tcv.frame.size;
    UIGraphicsBeginImageContext(gcSize);
    [tcv.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    UIGraphicsBeginImageContextWithOptions(image.size, NO, image.scale);
    const CGRect RECT = CGRectMake(0, 0, image.size.width, image.size.height);;
    [[UIBezierPath bezierPathWithRoundedRect:RECT cornerRadius:radius] addClip];
    [image drawInRect:RECT];
    UIImage* imageNew = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return imageNew;
}

Answer 3

我知道你想要一个白色突出显示颜色，但是对于其他任何不关心突出显示颜色的人来说，只需将按钮类型切换到系统（在属性检查器中）。好消息是你仍然可以使用自定义字体，颜色等。

Answer 4

使用titleColor:forState:为相应states的选择/加亮/禁用设置文字颜色。

Answer 5

@nitin kachhadiya的答案非常好，但我调整了它，简化了它，并使它成为UIButton的一个类别。将这两个文件添加到项目中。然后选择要设置的颜色：

[button setHighlightedColor:[UIColor blueColor]];

<强>的UIButton + FJHighlighted.h

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>

@interface UIButton (FJHighlighted)

- (void)setHighlightedColor:(UIColor *)highlightColor;

@end

<强>的UIButton + FJHighlighted.m

#import "UIButton+FJHighlighted.h"

@implementation UIButton (FJHighlighted)

- (void)setHighlightedColor:(UIColor *)highlightColor {
    [self setBackgroundImage:[self setBackgroundImageByColor:highlightColor cornerRadius:0]
                    forState:UIControlStateHighlighted];
    [self setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
}

- (UIImage *)setBackgroundImageByColor:(UIColor *)backgroundColor cornerRadius:(float)radius {
    UIView *tcv = [[UIView alloc] initWithFrame:self.frame];
    [tcv setBackgroundColor:backgroundColor];

    CGSize gcSize = tcv.frame.size;
    UIGraphicsBeginImageContext(gcSize);
    [tcv.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    UIGraphicsBeginImageContextWithOptions(image.size, NO, image.scale);
    const CGRect RECT = CGRectMake(0, 0, image.size.width, image.size.height);;
    [[UIBezierPath bezierPathWithRoundedRect:RECT cornerRadius:radius] addClip];
    [image drawInRect:RECT];
    UIImage *imageNew = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();

    return imageNew;
}

@end

触摸时UIButton没有显示高亮显示

5 个答案: