SwiftUI 為我們提供了各種梯度選項，所有這些選項都可以通過多種方式使用。
Gradient 漸變器
A color gradient represented as an array of color stops, each having a parametric location value.
gradient是一組顏色的合集，每個顏色都忽略位置參數(shù)
LinearGradient 線性漸變器
線性漸變器擁有沿軸進行漸變函數(shù)，我們可以自定義設置顏色空間、起點和終點。
下面我們看看LinearGradient效果
import SwiftUIstruct LineView: View { var gradient: Gradient { let stops: [Gradient.Stop] = [ .init(color: .red, location: 0.5), .init(color: .yellow, location: 0.5) ] return Gradient(stops: stops) } var body: some View { ZStack { LinearGradient(gradient: gradient, startPoint: .top, endPoint: .trailing) .edgesIgnoringSafeArea(.all) Image("1") .resizable() .aspectRatio(contentMode: .fit) .clipShape(Circle()) .overlay(Circle() .stroke(lineWidth: 8) .foregroundColor(.white)) .frame(width: 250) Text("洛神賦圖") .padding() .foregroundColor(.white) .cornerRadius(8) .background(LinearGradient(gradient: Gradient(colors: [.white, .black]), startPoint: .top, endPoint: .bottom)) .offset(y:-280) } }}
import SwiftUIstruct LineGradient3Color: View { var body: some View { ZStack { LinearGradient(gradient: Gradient( colors: [.blue, .white, .pink]), startPoint: .topLeading, endPoint: .bottomTrailing) .edgesIgnoringSafeArea(.all) Image("2") .resizable() .aspectRatio(contentMode: .fit) .clipShape(Circle()) .overlay(Circle() .stroke(lineWidth: 8) .foregroundColor(.white)) .frame(width: 250) Text("清明上河圖") .padding() .foregroundColor(.white) .cornerRadius(8) .background(LinearGradient(gradient: Gradient( colors: [.yellow, .red]), startPoint: .topLeading, endPoint: .bottomTrailing)) .offset(y:-180) } }}Radial Gradient 徑向漸變
在徑向漸變中，我們必須指定起始半徑點，端半徑點與中心點，從徑向漸變開變.
import SwiftUIstruct RadialView: View { var body: some View { ZStack { RadialGradient(gradient: Gradient( colors: [.blue, .black]), center: .center, startRadius: 2, endRadius: 650) .edgesIgnoringSafeArea(.all) Image("3") .resizable() .aspectRatio(contentMode: .fit) .clipShape(Circle()) .overlay(Circle() .stroke(lineWidth: 8) .foregroundColor(.white)) .frame(width: 250) Text("富春山居圖") .padding() .foregroundColor(.white) .cornerRadius(8) .background( RadialGradient(gradient: Gradient( colors: [.yellow, .red]), center: .center, startRadius: 2, endRadius: 60)) .offset(y:-180) } }}Angular Gradient
在角漸變中，我們只需要通過中心點。
import SwiftUIstruct AngularView: View { var body: some View { ZStack { AngularGradient(gradient: Gradient( colors: [.green, .blue, .black, .green, .blue, .black, .green]), center: .center) .edgesIgnoringSafeArea(.all) Image("4") .resizable() .aspectRatio(contentMode: .fit) .clipShape(Circle()) .overlay(Circle() .stroke(lineWidth: 8) .foregroundColor(.white)) .frame(width: 250) Text("漢宮春曉圖") .padding() .foregroundColor(.white) .cornerRadius(8) .background( RadialGradient(gradient: Gradient( colors: [.yellow, .red]), center: .center, startRadius: 2, endRadius: 60)) .offset(y:-180) } }以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。
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