iOS中的自定义按钮，带有圆角矩形笔划，图标和标签

Question

我想使用代码重新创建此按钮，因此它是一个可重复使用的对象，您可以设置最小宽度，高度或延伸以适合图标和标签。在整个应用程序中，我们将在几个区域重复使用该按钮，它将包括一个细圆的矩形笔划，背景颜色，图标（trans PNG）和标签。我们想要设置背景颜色和笔触颜色，以便我们可以打开/关闭按钮。

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编辑：几乎工作的代码，但文本标签块是白色的，需要调整图像大小以适应框架，并且两者都要居中。

自定义按钮代码：

#import "CustomButton.h"

@implementation CustomButton

- (id)initWithFrame:(CGRect)frame image:(NSString *)image title:(NSString *)title background:(UIColor *)background border:(UIColor *)border 
{
    self = [super initWithFrame:frame];
    if (self)
    {
        self = [UIButton buttonWithType:UIButtonTypeCustom];
        CALayer *layer = [self layer];

        self.contentVerticalAlignment = UIControlContentVerticalAlignmentBottom;
        self.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;

        // background
        if (background) {
            layer.backgroundColor = (__bridge CGColorRef)(background);
        } else {
            layer.backgroundColor = [[UIColor darkGrayColor] CGColor];
        }

        // border
        if (border) {
            layer.borderColor = (__bridge CGColorRef) (border);
        } else {
            layer.borderColor = [[UIColor lightGrayColor] CGColor];
        }
        layer.cornerRadius = 2.0f;
        layer.borderWidth = 0.5f;

        // icon
        UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:image]];
                                  [self addSubview:imageView];

        // text label
        UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 25, 55, 15)];
        titleLabel.font = [[UIFont alloc] fontWithSize:7.00];
                                titleLabel.text = title;
                                [self addSubview:titleLabel];

        [self setFrame:frame];
    }
    return self;
}

@end

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编辑：更新了上面的代码块，并在viewController的相应视图中使用以下代码显示按钮：

CGRect buttonFrame = CGRectMake(125, 3, 52, 37);
CustomButton *btnNearby = [[CustomButton alloc] initWithFrame:buttonFrame image:@"map.png" title:@"NEARBY" background:nil border:nil];
[myCustomView addSubview:btnNearby];

出现自定义按钮但仍未正确格式化。

---

这是一个示例图标（白色PNG w / trans），应该出现在按钮的中央。

---

所需功能摘要：

1）可重复使用的按钮  2）可以具有最小宽度/高度或覆盖以匹配标签的宽度和图像+标签的高度  3）具有可配置的笔触颜色  4）匹配上面的按钮图标与笔画+图标+标签+背景颜色  5）可以改变边框颜色以打开/关闭

Answer 1

您可以尝试这样的事情：

#import <QuartzCore/QuartzCore.h>

@implementation CustomButton

- (id)initWithFrame:(CGRect)frame andImageName:(NSString*)filename ofType:(NSString*)type
{
    self = [super initWithFrame:frame];
    if (self) 
    {
        self = [UIButton buttonWithType:UIButtonTypeCustom];
        CALayer *layer = [self layer];
        layer.borderColor = [[UIColor blueColor] CGColor];
        layer.cornerRadius = 4.0f;
        layer.borderWidth = 2.0f;

        UIImage* img = [[UIImage alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:filename ofType:type]];
        UIImageView* imgView = [[UIImageView alloc] initWithImage:img];
        [imgView setFrame:CGRectMake(0, 0, img.size.width, img.size.height)];
        [self addSubview:imgView];

        [self setFrame:frame];
    }
    return self;
}

- (void)switchColor
{
    CALayer *layer = [self layer];

    if(buttonIsOn)
        layer.borderColor = [[UIColor blueColor] CGColor];
    else
        layer.borderColor = [[UIColor grayColor] CGColor];
}

@end

每次使用此按钮时，只需使用：

CustomButton* cusButton = [[CustomButton alloc] initWithFrame:someFrame];

为了替换笔触颜色，只需在switchColor的目标方法的第一行中调用cusButton即可。您应该没问题。

Answer 2

我能够解决这个问题，我确信它可以进一步改进，但按钮现在显示为所需的问题。请参阅最终结果的快照，以及希望帮助其他人的工作代码。

工作截图：

工作代码：

CustomButton.h

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

@interface CustomButton : UIButton
- (id)initWithFrame:(CGRect)frame image:(NSString *)image title:(NSString *)title background:(UIColor *)background border:(UIColor *)border;
@end

CustomButton.m

#import "CustomButton.h"

@implementation CustomButton

- (id)initWithFrame:(CGRect)frame image:(NSString *)image title:(NSString *)title background:(UIColor *)background border:(UIColor *)border 
{
    self = [super initWithFrame:frame];
    if (self)
    {
        self = [UIButton buttonWithType:UIButtonTypeCustom];
        CALayer *layer = [self layer];

        // background
        if (background) {
            layer.backgroundColor = (__bridge CGColorRef)(background);
        } else {
            layer.backgroundColor = [[UIColor darkGrayColor] CGColor];
        }

        // border
        if (border) {
            layer.borderColor = (__bridge CGColorRef)(border);
        } else {
            layer.borderColor = [[UIColor lightGrayColor] CGColor];
        }
        layer.cornerRadius = 2.0f;
        layer.borderWidth = 0.5f;

        // icon
        UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(14,3,20,19)];
        imageView.image = [UIImage imageNamed:image];
        imageView.contentMode  = UIViewContentModeScaleAspectFit;
        [self addSubview:imageView];

        // text label
        UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 20, 50, 14)];
        titleLabel.opaque = NO;
        titleLabel.numberOfLines = 1;
        titleLabel.textAlignment = UITextAlignmentCenter;
        titleLabel.font = [UIFont systemFontOfSize:7.00];
        titleLabel.textColor = [UIColor whiteColor];
        titleLabel.backgroundColor = [UIColor clearColor];
        titleLabel.text = title;
        [self addSubview:titleLabel];

        [self setFrame:frame];
    }
    return self;
}

@end

在UIImage图层上实例化了与视图控制器相对应的按钮：

// Add custom button to image view background layer
CGRect buttonFrame = CGRectMake(125, 3, 50, 35);
CustomButton *btnNearby = [[CustomButton alloc] initWithFrame:buttonFrame image:@"map.png" title:@"NEARBY" background:nil border:nil];
[myCustomView addSubview:btnNearby];