我需要使用Objective C在UIView上绘制模糊效果。
这是我的设计
UIBlurEffect *blurEffect = [UIBlurEffect effectWithStyle: UIBlurEffectStyleExtraLight];
UIVisualEffectView *contentView = [[UIVisualEffectView alloc] initWithEffect: blurEffect];
contentView.layer.cornerRadius = 18.0;
contentView.layer.masksToBounds = YES;
contentView.backgroundColor = [UIColor whiteColor];
contentView.userInteractionEnabled = NO;
contentView.layer.shadowRadius = 10;
contentView.layer.shadowOpacity = 0.2f;
contentView.layer.shadowColor = [UIColor whiteColor].CGColor;
contentView.layer.shadowOffset = CGSizeZero;
[contentView setFrame: annotationFrame];
[contentView setTranslatesAutoresizingMaskIntoConstraints: YES];
self.contentView = contentView;
下面的屏幕截图是使用以上代码的当前输出
我已经尝试了上面的代码。 ,但是我没有得到确切的模糊效果
恳请我画这个设计。
我已经更新了以下代码
- (void)drawRect:(CGRect)rect {
[super drawRect: rect]; //i doubt we need a super drarRect here…
[self drawMarker: self.markerView fillColor: [UIColor whiteColor]];
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGPathRef path = CGPathCreateWithRoundedRect(CGRectInset(rect, self.frame.size.width/4, self.frame.size.height/4), self.frame.size.width/8, self.frame.size.height/8, nil);
CGContextSetFillColorWithColor(ctx,[UIColor slateColor].CGColor);
CGContextSetShadowWithColor(ctx, CGSizeZero, self.frame.size.height/4, [UIColor slateColor].CGColor);
for ( int i = 0; i<=6; i++) {
CGContextAddPath(ctx, path);
CGContextFillPath(ctx);
}
}
我需要我的观点背后的模糊效果,请为此向我提出建议。
谢谢。
最佳答案
将我以前的答案从迅速转变为Objective-C,我们有了这个
@implementation UICustomBackgroundButton
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect {
// Drawing code
[super drawRect:rect];
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGPathRef path = CGPathCreateWithRoundedRect(CGRectInset(rect, self.frame.size.width/4, self.frame.size.height/4), self.frame.size.width/8, self.frame.size.height/8, nil);
CGContextSetFillColorWithColor(ctx,[UIColor blueColor].CGColor);
CGContextSetShadowWithColor(ctx, CGSizeZero, self.frame.size.height/4, [UIColor blueColor].CGColor);
for ( int i = 0; i<=6; i++) {
CGContextAddPath(ctx, path);
CGContextFillPath(ctx);
}
}
@end
结果