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SwiftUIで作りながら学ぶアニメーション インジケーター編
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Ryo Tsuzukihashi
February 12, 2020
Programming
0
520
SwiftUIで作りながら学ぶアニメーション インジケーター編
SwiftUIで作りながら学ぶアニメーション インジケーター編
Qiitaに詳しい記事あげます。
Ryo Tsuzukihashi
February 12, 2020
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Transcript
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झຯݸਓΞϓϦυοτֆ ॳొஃͰۓுத
ΰʔϧ
࡞Ζ͏ struct ContentView: View { var body: some View {
Circle() .trim(from: 0, to: 0.6) .stroke(Color.green, lineWidth: 8) .frame(width: 48, height: 48) } }
ʁ
StrokeStyle( lineWidth: CGFloat, lineCap: CGLineCap, lineJoin: CGLineJoin, miterLimit: CGFloat, dash:
[CGFloat], dashPhase: CGFloat ) StrokeStyle
lineCap . round . square . butt
dash [ઢͷ͞, ۭനͷ͞, 2൪ͷઢͷ͞, 2൪ͷۭനͷ͞, ...] ഁઢͷܗঢ়ΛྻͰࢦఆ͠·͢ɻ .stroke(Color.green, style: StrokeStyle(
lineWidth: 8, lineCap: .round, dash: [0.1, 16]))
rotationEffect(_:anchor:) func rotationEffect( _ angle: Angle, anchor: UnitPoint = .center)
-> some View Circle() . . . .rotationEffect( Angle(degrees: self.isAnimation ? 360 : 0) ) @State var isAnimation = false
.onAppear() { withAnimation( Animation .linear(duration: 1) .repeatForever(autoreverses: false)) { self.isAnimation.toggle()
} } @available(iOS 13.0, OSX 10.15, tvOS 13.0, watchOS 6.0, *) public func withAnimation<Result>( _ animation: Animation? = .default, _ body: () throws -> Result) rethrows -> Result XJUI"OJNBUJPO @@
default linear easeIn easeOut easeInOut
άϦϯϐʔεΛଔۀ
AngularGradient(gradient: Gradient(colors: [.gray, .white]) άϥσʔγϣϯ Gradient(colors: [.gray, .white]) άϥσʔγϣϯ͍ͤͨ͞৭ͷྻͭҎ্⭕ w-JOFBS(SBEJFOUઢܗάϥσʔγϣϯ
w"OHVMBS(SBEJFOUԁܗάϥσʔγϣϯ w3BEJBM(SBEJFOU์ঢ়άϥσʔγϣϯ
None
StrokeStyle( lineWidth: 8, lineCap: .round, dash: [0.1, 16], dashPhase: 8)
) ഁઢͷ։࢝ҐஔΛͣΒ͢ʂ
Circle() .trim(from: 0, to: 0.6) .stroke( AngularGradient( gradient: Gradient(colors: [.gray,
.white]), center: .center), style: StrokeStyle( lineWidth: 8, lineCap: .round, dash: [0.1, 16], dashPhase: 8)) .frame(width: 48, height: 48) .rotationEffect( Angle(degrees: self.isAnimation ? 360 : 0)) .onAppear() { withAnimation( Animation .linear(duration: 1) .repeatForever(autoreverses: false)) { self.isAnimation.toggle() } }
None
None
4XJGU6*ͰΦϦδφϧΞχϝʔγϣϯΛͬͯ ΞϓϦΛϦονʹʂ