SwiftUI onTapGesture仅调用一次

时间:2020-08-12 17:16:08

标签: swift swiftui ios-animations

我正在研究具有多个视图组件的音频播放器。 当我们在中间视图中的任意位置单击时,我添加了一种隐藏/显示顶视图和底视图的方法。

在运行正常之前,但是最近我再次尝试时,它只是将其关闭,不会再次触发onTapGesture

我相信与之前的唯一区别是,视图是在视图控制器中呈现的,而不是在视图控制器中被按下的。

我尝试对TapGesture()使用onEnded()的自定义手势,但结果相同。 我还尝试添加像[here] [1]这样的矩形。

struct PlayerView: View {
    @ObservedObject private var playerState = PlayerState()
    @Binding var isPlayerReduced: Bool

    private let interfaceColor: Color = .gray//.black
    private let interfaceOpacity: Double = 0.9
    private let interfaceAnimationDuration: Double = 0.4

    var body: some View {
        ZStack(content: {
            GeometryReader(content: { geometry in
                VStack(content: {
                    if !self.playerState.isInterfaceHidden {
                        TopPlayerView(playerState: self.playerState,
                                      isPlayerReduced: self.$isPlayerReduced)
                            .transition(.opacity)
                            .background(self.interfaceColor.opacity(self.interfaceOpacity))
                    }
                    MiddlePlayerView(skipIntro: self.$playerState.skipIntro)
                        // Allow to spread the background zone for click purposes
                        .background(Color.clear)
                        // I want to have the middle under my TopPlayer and my BottomPlayer
                        .zIndex(-1)
                        .onTapGesture(perform: {
                            withAnimation(.easeInOut(duration: self.interfaceAnimationDuration)) {
                                self.playerState.isInterfaceHidden.toggle()
                            }
                        })
                    //                            .gesture(TapGesture()
                    //                                .onEnded({ _ in
                    //                                }))
                    if !self.playerState.isInterfaceHidden {
                        BottomPlayerView(playerState: self.playerState)
                            .padding(.bottom, geometry.safeAreaInsets.bottom)
                            .transition(.opacity)
                            .background(self.interfaceColor.opacity(self.interfaceOpacity))
                    }
                })
            })
        })
            .background(Color.black)
            .edgesIgnoringSafeArea(.all)
            .navigationBarTitle("")
            .navigationBarHidden(true)
    }
}

我在这里有点主意,欢迎任何帮助!谢谢!

1 个答案:

答案 0 :(得分:0)

好的,因此在触摸完此代码中的所有内容之后。我最终使它工作。 区别在于我将填充置于视图的位置。 我将填充切换到VStack,而不是在VStack中查看。 看来现在可以正常工作。

我在工作代码下方发布。

var body: some View {
        ZStack(alignment: .center, content: {
            GeometryReader(content: { geometry in
                VStack(content: {
                    self.topMarker()
                    if !self.playerState.isInterfaceHidden {
                        TopPlayerView(playerState: self.playerState,
                                      isPlayerReduced: self.$isPlayerReduced)
                            .transition(.opacity)
                            .background(self.interfaceColor.opacity(self.interfaceOpacity))
                    }
                    MiddlePlayerView(skipIntro: self.$playerState.skipIntro)
                        // Allow to spread the background zone for click purposes
                        .background(Color.white.opacity(0.00000001))
                        // I want to have the middle under my TopPlayer and my BottomPlayer
                        .zIndex(-1)
                        .onTapGesture(perform: {
                            withAnimation(.easeInOut(duration: self.interfaceAnimationDuration)) {
                                self.playerState.isInterfaceHidden.toggle()
                            }
                        })
                    if !self.playerState.isInterfaceHidden {
                        BottomPlayerView(playerState: self.playerState)
                            .transition(.opacity)
                            .background(self.interfaceColor.opacity(self.interfaceOpacity))
                    }
                })
                    .padding(.top, 8)
                    .padding(.bottom, geometry.safeAreaInsets.bottom)
            })
        })
            .background(Color.black)
            .edgesIgnoringSafeArea(.all)
            .navigationBarTitle("")
            .navigationBarHidden(true)
    }

说实话,我不知道这里有什么区别... 即使在视图调试器中也没有区别。