2018-10-29 自定义带边框一半为椭圆的按钮

1.绘制按钮背景图形

@interface CustomBezierView : UIView
@property (nonatomic, assign) BOOL isFill;
@property (nonatomic, assign) BOOL isLeft;
@end

@implementation CustomBezierView

- (instancetype)initWithFrame:(CGRect)frame isFill:(BOOL)isFill isLeft:(BOOL)isLeft{
    if (self = [super initWithFrame:frame]) {
        self.backgroundColor = [UIColor whiteColor];
        self.isFill = isFill;
        self.isLeft = isLeft;
    }
    return self;
    
}

- (void)drawRect:(CGRect)rect {
//使用Bezier绘制图形： rect设置大小  byRoundingCorners设置圆角位置   cornerRadii圆角大小
    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:rect byRoundingCorners:(self.isLeft?UIRectCornerBottomLeft:UIRectCornerBottomRight) | (self.isLeft?UIRectCornerTopLeft:UIRectCornerTopRight) cornerRadii:CGSizeMake(17, 17)];
    maskPath.lineWidth = 1;
    [HEXACOLOR(0xA82D2D, 1) set];
    self.isFill?[maskPath fill]:[maskPath stroke];
}

@end

2.去除按钮点击时的高亮效果
self.totalStatis.adjustsImageWhenDisabled = NO;
self.totalStatis.adjustsImageWhenHighlighted = NO;

3.视图转image

• (UIImage )imageFromView:(UIView)view{
  UIGraphicsBeginImageContextWithOptions(view.bounds.size, YES, view.layer.contentsScale);
  [view.layer renderInContext:UIGraphicsGetCurrentContext()];
  UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();
  return image;
  }