我有一个UIProgressView,我试图让它具有正方形而不是圆形边缘。我没有看到任何明显的方式来做到这一点,所以我的想法是让进度图像本身比方框更大一点,以便进度图像裁剪成方形。但是,无论如何改变进度图像的大小,我似乎都无法实现这一效果。任何人都可以告诉我是否有办法实现我的目标?创建正方形而不是圆角边缘效果UIProgressView
这里是我现在有一个UIView子类中:
self.progressView = [[UIProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleDefault];
self.progressView.trackImage = [PLStyle imageForColor:[PLColors greyLight] inFrame:CGRectMake(0, 0, 1, ProgressViewHeight)];
self.progressView.progressImage = [PLStyle imageForColor:[PLColors orange] inFrame:CGRectMake(0, 0, 1, ProgressViewHeight)];
[self.progressView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self addSubview:self.progressView];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self.progressView
attribute:NSLayoutAttributeLeading
relatedBy:NSLayoutRelationEqual
toItem:self.imageView
attribute:NSLayoutAttributeTrailing
multiplier:1
constant:LeadingOrTrailingSpace]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self.progressView
attribute:NSLayoutAttributeCenterY
relatedBy:NSLayoutRelationEqual
toItem:self
attribute:NSLayoutAttributeCenterY
multiplier:1
constant:0]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self.progressView
attribute:NSLayoutAttributeTrailing
relatedBy:NSLayoutRelationEqual
toItem:self.counter
attribute:NSLayoutAttributeLeading
multiplier:1
constant:-LeadingOrTrailingSpace]];
[self addConstraint:
[NSLayoutConstraint constraintWithItem:self.progressView
attribute:NSLayoutAttributeHeight
relatedBy:NSLayoutRelationEqual
toItem:nil
attribute:NSLayoutAttributeNotAnAttribute
multiplier:1
constant:ProgressViewHeight]];
//上述用于在进度视图
+ (UIImage *)imageForColor:(UIColor *)color inFrame:(CGRect)rect
{
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [color CGColor]);
CGContextFillRect(context, rect);
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}