自定义UIButton

需要做如下图样式的按钮，虽然用UIView可以方便的布局出效果，但缺少点击的效果，所以还是要在UIButton上做定制。

普通样式:

点击样式:

PXBoxMeButton.h

@interface PXBoxMeButton : UIButton
//下面几个属性是雷达图专属
@property(nonatomic,strong) UILabel *subTitleLabel;
@property(nonatomic,strong) UIImageView *rightBottomImageView;
@end

PXBoxMeButton.m

#import "PXBoxMeButton.h"

@implementation PXBoxMeButton

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self){
        _subTitleLabel = [[UILabel alloc]init];
        _subTitleLabel.text = @"(每周日更新)";
        _subTitleLabel.font = [UIFont systemFontOfSize:9];
        _subTitleLabel.textColor = [UIColor lightGrayColor];
        _subTitleLabel.textAlignment = NSTextAlignmentCenter;
        [self addSubview:_subTitleLabel];
        _subTitleLabel.hidden = YES;


        _rightBottomImageView = [[UIImageView alloc]init];
        [self addSubview:_rightBottomImageView];
        _rightBottomImageView.hidden = YES;
    }
    return self;
}

- (void)layoutSubviews
{
    [super layoutSubviews];

    //center Image
    CGPoint center = self.imageView.center;
    center.x              = self.frame.size.width / 2;
    center.y              = self.frame.size.width / 2.5;
    self.imageView.center = center;

    //center text
    CGRect newFrame = self.titleLabel.frame;
    newFrame.origin.x             = 0;
    newFrame.origin.y             = self.imageView.bottom + 5;
    newFrame.size.width           = self.frame.size.width;
    self.titleLabel.frame         = newFrame;
    self.titleLabel.textAlignment = NSTextAlignmentCenter;

    //center subtext
    [_subTitleLabel sizeToFit];
    _subTitleLabel.top =  self.titleLabel.bottom+5;
    _subTitleLabel.width = self.frame.size.width;

    _rightBottomImageView.x = self.frame.size.width *7/10;
    _rightBottomImageView.y = self.frame.size.width *7/10;
    _rightBottomImageView.width = self.frame.size.width/10*3;
    _rightBottomImageView.height = self.frame.size.width/10*3;
}

@end

在 layoutSubviews 方法中重新布局默认的 imageView 和 titleLabel，本来是左右放置，现在改为上下。 也加上自定义的 _subTitleLabel（副标题） 和 _rightBottomImageView （角标）。在接口中的属性可以方便的控制角标和副标题，保持按钮点击的样式。