经过多次测试，只有10.0以上版本才能修改Frame 不然会崩溃

- (void)layoutSubviews
{
    [super layoutSubviews];

//    if(kDevice_System >= 10.0) {
//
//        NSString *content = self.titleLabel.text;
//        UIFont *font = self.titleLabel.font;
//        CGSize size = CGSizeMake(MAXFLOAT, self.height);
//        CGSize buttonSize = [content boundingRectWithSize:size
//                                                  options:NSStringDrawingTruncatesLastVisibleLine  | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
//                                               attributes:@{ NSFontAttributeName:font}
//                                                  context:nil].size;
//
//        self.width = buttonSize.width + FitValue(70);
//
//    }

    // 调整图片
    self.imageView.x = FitValue(5);
    self.imageView.y = FitValue(10);
    self.imageView.width = FitValue(20);
    self.imageView.height = self.imageView.width;

    // 调整文字
    self.titleLabel.x = self.imageView.width + FitValue(15);
    self.titleLabel.y = 0;
    self.titleLabel.width = self.width - self.imageView.width - FitValue(10);
    self.titleLabel.height = self.height;
    
    
}

不能修改，那就直接更新约束，放在重写title方法中，更节能

- (void)setTitle:(NSString *)title forState:(UIControlState)state {
    
    [super setTitle:title forState:state];
    
    [self mas_updateConstraints:^(MASConstraintMaker *make) {
        
        UIFont *font = self.titleLabel.font;
        CGSize size = CGSizeMake(MAXFLOAT, self.height);
        CGSize buttonSize = [title boundingRectWithSize:size
                                                  options:NSStringDrawingTruncatesLastVisibleLine  | NSStringDrawingUsesLineFragmentOrigin | NSStringDrawingUsesFontLeading
                                               attributes:@{ NSFontAttributeName:font}
                                                  context:nil].size;
        
        make.width.equalTo(@(buttonSize.width + FitValue(60)));
    }];
}