Question

这是一个SwiftUI问题，而不是UIKit问题。：）

我正在尝试使用SwiftUI为导航栏标题设置其他字体。我怀疑这还不支持。这是我尝试过的：

var body: some View {
  NavigationView {
    .navigationBarTitle(Text("Dashboard").font(.subheadline), displayMode: .large)
  }
}

无论我使用.font设置如何，它都不会更改文本。我也尝试过设置自定义字体并删除displayMode属性。

有人能使它正常工作吗？

Answer 1

在SwiftUI中，目前我们无法直接更改dupli_df = pd.concat([df]*3, ignore_index=True) # get all the column that are datetime and the length of the dataframe l_col_datetime = dupli_df.select_dtypes('datetime').columns len_df = len(df) #add or remove a day depending on the slice dupli_df.loc[len_df:2*len_df-1, l_col_datetime ] += pd.DateOffset(days=1) dupli_df.loc[2*len_df:, l_col_datetime ] -= pd.DateOffset(days=1) print(dupli_df) Arrive Dept Val 0 2015-02-24 2015-02-25 1.450079 1 2015-02-25 2015-02-26 -1.478552 2 2015-02-26 2015-02-27 -0.596992 3 2015-02-25 2015-02-26 1.450079 4 2015-02-26 2015-02-27 -1.478552 5 2015-02-27 2015-02-28 -0.596992 6 2015-02-23 2015-02-24 1.450079 7 2015-02-24 2015-02-25 -1.478552 8 2015-02-25 2015-02-26 -0.596992字体，但是您可以像这样更改NavigationBar的外观，

navigationBarTitle

我希望这会对您有所帮助。谢谢！

Answer 2

如果您需要为SF系列使用新的Rounded face，可以使用此代码段

    let design = UIFontDescriptor.SystemDesign.rounded
    let descriptor = UIFontDescriptor.preferredFontDescriptor(withTextStyle: .largeTitle)
                                     .withDesign(design)!
    let font = UIFont.init(descriptor: descriptor, size: 48)
    UINavigationBar.appearance().largeTitleTextAttributes = [.font : font]

Answer 3

您需要的所有设置都在 init() 中。和他们一起玩，了解什么负责什么。几个小时前，这段代码帮助我理解了导航栏设置。我不记得我在哪里找到的。

struct ContentView: View {
    init() {
        // this is not the same as manipulating the proxy directly
        let appearance = UINavigationBarAppearance()
        
        // this overrides everything you have set up earlier.
        appearance.configureWithTransparentBackground()
        
        // this only applies to big titles
        appearance.largeTitleTextAttributes = [
            .font : UIFont.systemFont(ofSize: 20),
            NSAttributedString.Key.foregroundColor : UIColor.white
        ]
        // this only applies to small titles
        appearance.titleTextAttributes = [
            .font : UIFont.systemFont(ofSize: 20),
            NSAttributedString.Key.foregroundColor : UIColor.white
        ]
        
        //In the following two lines you make sure that you apply the style for good
        UINavigationBar.appearance().scrollEdgeAppearance = appearance
        UINavigationBar.appearance().standardAppearance = appearance
        
        // This property is not present on the UINavigationBarAppearance
        // object for some reason and you have to leave it til the end
        UINavigationBar.appearance().tintColor = .white
        
    }
    var body: some View {
        NavigationView {
            ZStack {
                Color.black
                    .edgesIgnoringSafeArea([.all])
                NavigationLink(destination: ContentView2()) {
                    Text("push")
                }
            }
            .navigationBarTitle("", displayMode: .inline)
            .navigationBarBackButtonHidden(true)
        }
    }
}
struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
struct ContentView2: View {
    
    var body: some View {
        
            ZStack {
                Color.black
                    .edgesIgnoringSafeArea([.all])
                NavigationLink(destination: ContentView()) {
                    Text("push")
                }
            }
            .navigationBarTitle("My Custom White title", displayMode: .inline)
        
    }
}

P。 S：代码取自here

使用SwiftUI设置导航栏标题字体

3 个答案: