Basic use of Calayer

Calayer need to import this framework: #import <QuartzCore/QuartzCore.h>first, Calayer Common Properties

Properties	Description	whether implicit animations are supported
Anchorpoint	A point position coincident with the center point, called an "anchor point," where the anchor is described by default at the center point of the image (0.5,0.5) relative to the X, Y position ratio	Is
BackgroundColor	Layer background color	Is
BorderColor	Border color	Is
BorderWidth	Border width	Is
Bounds	Layer Size	Is
Contents	Layers display content, such as the ability to display a picture as a layer content	Is
Contentsrect	The size and position of the layer display content	Is
Cornerradius	Fillet radius	Is
doublesided	If the back of the layer is displayed, the default is Yes	Whether
Frame	The layer size and position does not support implicit animation, so frame is rarely used in calayer, usually using bounds and position instead	Whether
Hidden	Whether to hide	Is
Mask	Layer Masks	Is
Masktobounds	Whether sublayers cut layer boundaries, default to No	Is
Opacity	Transparency, similar to the alpha of UIView	Is
Position	The location of the center point of the layer, similar to the UIView	Is
Shadowcolor	Shadow color	Is
Shadowoffset	Shadow Offset	Is
Shadowopacity	Shadow transparency, note the default is 0, this property must be set if the shadow is set	Is
Shadowpath	Shape of the Shadow	Is
Shadowradius	Shadow Blur Radius	Is
Sublayers	Sub-layer	Is
Sublayertransform	Child layer Deformation	Is
Transform	Layer deformation	Is

Calayer, watch out.

• The nature of implicit property animation is that these properties are changed by default, cabasicanimation animation implementation is implied, so it appears to be animated, default 0.25 seconds
• The frame property is rarely used in Calayer because the frame itself does not support animation effects, usually using bounds and position instead.
• Transparency in Calayer uses opacity instead of alpha, and the center point uses a position representation instead of center.
• The Anchorpoint property is the anchor point of the layer, and the range in (0~1,0~1) represents the scale of the x and Y axes, which can always coincide with the position (center point), and when the center point of the layer is fixed, Adjust the anchorpoint to achieve the adjustment layer display position (because it is always coincident with position)

Second, the basic use of Calayer

2.1, the way of assigning valueSelf.iconView.layer.transform = Catransform3dmakescale (1.5, 0.5, 0) Self.iconView.layer.transform = Catransform3dmake           Rotation (m_pi_4, 0, 0, 1)//3d rotation self.iconView.layer.shadowOpacity = 0.5; Set Shadow Transparency Self.iconView.layer.shadowColor = [Uicolor Bluecolor].    Cgcolor;   Set Shadow Color Self.iconView.layer.shadowOffset = Cgsizemake (20, 20); Set Shadow Deviation 2.2, KVC Way[Self.iconView.layer setvalue:@ ( -100) forkeypath:@ "transform.translation.x"]; What parameters can be passed, see the official documentation

Basic use of Calayer