Swiftui Multiline Text Background Color

SwiftUI Multiline Text Background Color

It seems SwiftUI doesn't support that yet (Xcode 11.3). You can create a UIViewRepresentable for a UILabel with an attributedString though. Or use AttributedText from SwiftUIX.

Change background color of TextEditor in SwiftUI

iOS 16

You should hide the default background to see your desired one:

TextEditor(text: .constant("Placeholder"))
    .scrollContentBackground(.hidden) // <- Hide it
    .background(.red) // To see this

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iOS 15 and below

TextEditor is backed by UITextView. So you need to get rid of the UITextView's backgroundColor first and then you can set any View to the background.

struct ContentView: View {
    init() {
        UITextView.appearance().backgroundColor = .clear
    }

    var body: some View {
        List {
            TextEditor(text: .constant("Placeholder"))
                .background(.red)
        }
    }
}

Demo

_{You can find my simple trick for growing TextEditor here in this answer}

SwiftUI multiline text always truncating at 1 line

Please see this answer for Xcode 11 GM:

https://stackoverflow.com/a/56604599/30602

Summary: add .fixedSize(horizontal: false, vertical: true) — this worked for me in my use case.

How do I create a multiline Textfiled in SwiftUI?

Here is a 90% solution. It deletes further text after the 3rd line break, but it cannot detect line wraps in long texts.

struct ContentView: View {
    
    @State private var notes = ""
    
    var body: some View {
        
        VStack (alignment: .leading) {
            Text("Notes")
                .fontWeight(.bold)
            
            CustomTextEditor("Enter your note", text: $notes)
        }
        .padding()

    }
}

struct CustomTextEditor: View {
    
    init(_ prompt: LocalizedStringKey, text: Binding<String>) {
        self.prompt = prompt
        self._text = Binding(projectedValue: text)
    }
    let prompt: LocalizedStringKey
    @Binding var text: String
        
    var body: some View {
        ZStack(alignment: .topLeading ) {
            
            Text(prompt)
                .foregroundColor(text == "" ? .secondary : .clear)
                .padding(EdgeInsets(top: 7, leading: 3, bottom: 0, trailing: 0))
            
            TextEditor(text: $text)
            
            // deleting everything after the 3rd linebreak
                .onChange(of: text) { _ in
                    let stringArray = text.map { $0 }
                    let pos = stringArray.indices.filter { stringArray[$0] == "\n"}
                    if pos.count > 2 {
                        text = String(stringArray.prefix(upTo: pos[2]))
                    }
                }
        }
        .frame(height: 82)
        .padding(10)
        .background(Color(.systemGray5))
        .cornerRadius(20)
        
        // getting rid of TextEditor standard background
        .onAppear {
            UITextView.appearance().backgroundColor = .clear
        }
        .onDisappear {
            UITextView.appearance().backgroundColor = .systemGray5
        }
    }
}

MacOs SwiftUI textfield focus effect color change

It is possible to use background with focused dependent state, like

.background(RoundedRectangle(cornerRadius: 4)
        .stroke(Color.gray, lineWidth: 0.5).cornerRadius(4)
        .background(focused ? .black : .clear)        // << here !!
        .clipShape(RoundedRectangle(cornerRadius: 4))
)

Complete test module is here

swiftUI: possible to have background color ignore safe zone and content adhere to safe zone?

You only want the Color to extend into the safe area, so only put ignoresSafeArea on the Color. Also, if you're using iOS 14+, you should use ignoresSafeArea(_:edges:) instead of the deprecated edgesIgnoringSafeArea(_:) as West1 said.

VStack {
    Text("Foo")
}
.background(
    Color.red.ignoresSafeArea()
)

---

Full example:

struct ContentView: View {
    var body: some View {
        VStack {
            HStack {
                Text("Foo")
                Spacer()
            }
            Spacer()
        }
        .background(
            Color.red.ignoresSafeArea() /// `edgesIgnoringSafeArea` is deprecated
        )
    }
}

Result:

How can I change the text color of selected list items in SwiftUI?

There might be variants but in general you have to pass somehow selection into view with row text and apply foreground color conditionally, like

     NavigationLink(
         destination: ItemDetail(item: item)
     ) {
         ItemRow(item: item, selected: item == selectedItem)
     }

and in ItemRow

    Text(item.title)
        .foregroundColor(selected ? .blue : .labelColor)

Note: instead of .blue you can set your custom color created in color assets with light/dark mode variants, so selection be differently colored in those modes.

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