calayer

问题 I find some code like this: CABasicAnimation *anim = [CABasicAnimation animation]; anim.keyPath = @"transform.scale"; anim.fromValue = [NSNumber numberWithFloat:1.0]; anim.toValue = [NSNumber numberWithFloat:0]; anim.removedOnCompletion = NO; anim.fillMode = kCAFillModeBoth; anim.delegate = self; [self.view.layer addAnimation:anim forKey:@"scaleOut"]; and anim.keyPath = @"transform.rotation.x"; As far as I know, keyPath is a chained method invoke. "transform.scale" for CALayer is aLayer

问题 I find some code like this: CABasicAnimation *anim = [CABasicAnimation animation]; anim.keyPath = @"transform.scale"; anim.fromValue = [NSNumber numberWithFloat:1.0]; anim.toValue = [NSNumber numberWithFloat:0]; anim.removedOnCompletion = NO; anim.fillMode = kCAFillModeBoth; anim.delegate = self; [self.view.layer addAnimation:anim forKey:@"scaleOut"]; and anim.keyPath = @"transform.rotation.x"; As far as I know, keyPath is a chained method invoke. "transform.scale" for CALayer is aLayer

问题 I'm new to Swift, and I can't seem to figure out one of the most basic things - setting frame and bounds for a CALayer, so I can read them later. I'm trying to see where a box is drawn on a CALayer to determine how close to the center of the layer it is. I would have assumed the CALayer is the same size of the layer/view it's added to with subview, but when I look at the CALayer's frame or bounds it's zero. Same for the superview layer/view. Any help would be much appreciated! Goal: check

问题 I'm new to Swift, and I can't seem to figure out one of the most basic things - setting frame and bounds for a CALayer, so I can read them later. I'm trying to see where a box is drawn on a CALayer to determine how close to the center of the layer it is. I would have assumed the CALayer is the same size of the layer/view it's added to with subview, but when I look at the CALayer's frame or bounds it's zero. Same for the superview layer/view. Any help would be much appreciated! Goal: check

问题 I have searched but could not find the reason for this behavior. I have a UIButton whose image I am setting. Here is how the button should appear. Note that this is just a photoshop of the intended button design: Essentially, it is a square custom UIButton with a white border and a little surrounding shadow. In the upper right corner, there is a "X" mark, that will be added programmatically as a subview. Here is the screenshot of the button within the actual app. At this point, I have only

问题 I have searched but could not find the reason for this behavior. I have a UIButton whose image I am setting. Here is how the button should appear. Note that this is just a photoshop of the intended button design: Essentially, it is a square custom UIButton with a white border and a little surrounding shadow. In the upper right corner, there is a "X" mark, that will be added programmatically as a subview. Here is the screenshot of the button within the actual app. At this point, I have only

来源： https://stackoverflow.com/questions/40188126/how-to-save-screenshot-of-a-view-with-its-subviews-in-swift

来源： https://stackoverflow.com/questions/51554457/how-to-access-view-sublayers-in-swift

来源： https://stackoverflow.com/questions/57534213/how-to-cut-portion-of-calayer-in-ios-swift

来源： https://stackoverflow.com/questions/63109348/drag-uiview-over-uibezierpath-with-pan-gesture