uiimage

问题 I find the behavior of the new iOS 13 UIImage property withTintColor(_:renderingMode:) incomprehensible. What is it for, and how does it relate to the tint color of the context in which the image appears? For example: let im = UIImage(systemName:"circle.fill")?.withTintColor(.red) let iv = UIImageView(image:im) iv.frame.origin = CGPoint(x: 100, y: 400) self.view.addSubview(iv) I said .red . But it's blue: Evidently it's blue because it takes its color from the tint color of the surrounding

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/15008270/get-alpha-channel-from-uiimage-rectangle

来源： https://stackoverflow.com/questions/61830224/how-can-i-convert-from-uiimage-to-heif-heic-data-in-swift

来源： https://stackoverflow.com/questions/30993485/swift-uigraphicsgetimagefromcurrentimagecontext-cant-release-memory

来源： https://stackoverflow.com/questions/35008670/how-to-drag-uiimageview-using-touches-method