Bordercolor Not Picking The Lineargradient Color on Android

BorderColor not picking the linearGradient color on android

You should add style to the TouchableOpacity:

style={{
  width: 100,
  height: 100, backgroundColor: 'transparent', overflow: "hidden", borderRadius: 50, flex: 1}}

in addition change the style of profilePhotoContainer to:

profilePhotoContainer: {
    zIndex: 5,
    position: 'absolute',
    top: Dimensions.get('window').height * .13,
    left: Dimensions.get('window').width / 2 - Dimensions.get('window').width * .13,
    elevation: 4,
    borderRadius: 75,
    padding: 5,
    overflow: "hidden",
    borderColor: 'transparent',
  }

Flutter - Access color from LinearGradient()

To extract a color from a LinearGradient() just use its .colors[index] property

for example here :

    LinearGradient(
  colors: [
    Color(0xFFAF0000),
    Color(0xFF12F000),
    Color(0xFFFFA000),
  ],
).colors[2],

.colors[2] will get you the 3rd Color from this random LinearGradient()

-

So in your case just write :

Container(
color: niceGradient.colors[0])

to get the 1st color from your custom niceGradient ! : )

Hope it helps ! : )

flutter linear gradient color issue

Add this line in your main() to make it softer,

void main(){
  Paint.enableDithering = true;
  ...

is an android shape with a gradient border and transparent middle possible?

you can achieve this using jetpack compose then you can use interoperability API

@Composable
fun SetRing() {
    Box(
        modifier = Modifier
            .background(Color.Transparent)
            .border(
                2.dp,
                Brush.linearGradient(
                    colors = listOf(
                        Color.Yellow,
                        Color.Blue
                    )
                ),
                shape = RoundedCornerShape(5.dp)
            )
            .padding(6.dp)
    ) {
        Text(text = "Hiphop")
    }
}

interoperability API,
in XML file

<androidx.compose.ui.platform.ComposeView
    android:id="@+id/compose_interest"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"/>

[output]

Xamarin Forms LinearGradientBrush of Frame not working when colors are set from Dynamic Style

The second sample - binding to a Xamarin.Forms.Color object does not work at all.

The second question is need to set Path to a sub-property to do the binding.

Set the Name of the page.

x:Name="root"

Style with binding:

 <Style x:Key="wlHeaderGradient1"  TargetType="Frame">
          
            <Setter Property="BorderColor" Value="Purple" />
            <Setter Property="HasShadow" Value="False" />
            <Setter Property="CornerRadius" Value="0" />
            <Setter Property="HeightRequest" Value="100" />
            <Setter Property="WidthRequest" Value="100"/>
            <Setter Property="HorizontalOptions" Value="Center" />
            <Setter Property="VerticalOptions" Value="Center" />
            <Setter Property="Background">
               
                <LinearGradientBrush EndPoint="0,1">
                    <GradientStop Color="{Binding Path = BindingContext.CheckInHeaderBgColor1 ,Source={x:Reference root}}" Offset="0.0" />
                    <GradientStop Color="{Binding Path = BindingContext.CheckInHeaderBgColor2 ,Source={x:Reference root}}" Offset="0.5" />
                    <GradientStop Color="{Binding Path = BindingContext.CheckInHeaderBgColor1 ,Source={x:Reference root}}" Offset="1.0" />
                </LinearGradientBrush>
            </Setter>
        </Style>

Xaml:

   <StackLayout Orientation="Vertical" HorizontalOptions="Center" VerticalOptions="Start">
        <StackLayout Orientation="Horizontal" HorizontalOptions="Center" VerticalOptions="Start">

            <Frame Style="{StaticResource wlHeaderGradient1}"  x:Name="frmTest1" >
            </Frame>

        </StackLayout>

    </StackLayout>

Code behind:

 public Page12()
    {
        InitializeComponent();
        this.BindingContext = new HostPublicStyleInfo();
    }

ViewModel:

public class HostPublicStyleInfo
{
    public HostPublicStyleInfo()
    {
        CheckInHeaderBgColor1 = "#FF008080";
        CheckInHeaderBgColor2 = "#FFFF6347";
        frmTest2Style = "frmTest2GradientStyle";
    }
    public string frmTest2Style { get; set; }
    public string CheckInHeaderBgColor1 { get; set; }
    public string CheckInHeaderBgColor2 { get; set; }

}

The third example, attempting to use the dynamic resources never updates to the new colors (they stay the static black and white values) even though I have ensured the values are being changed when the custom color objects are being loaded.

1. Set the White-Black-White in Style instead of in Frame.

   <Style x:Key="wlHeaderGradient2" TargetType="Frame">
            <Setter Property="BorderColor" Value="Purple" />
            <Setter Property="HasShadow" Value="False" />
            <Setter Property="CornerRadius" Value="0" />
            <Setter Property="HeightRequest" Value="100" />
            <Setter Property="WidthRequest" Value="100"/>
            <Setter Property="HorizontalOptions" Value="Center" />
            <Setter Property="VerticalOptions" Value="Center" />
            <Setter Property="Background">
                <LinearGradientBrush EndPoint="0,1">
                    <GradientStop Color="{DynamicResource grdHeaderBGColor1}" Offset="0.0" />
                    <GradientStop Color="{DynamicResource  grdHeaderBGColor2}" Offset="0.5" />
                    <GradientStop Color="{DynamicResource grdHeaderBGColor1}" Offset="1.0" />
                </LinearGradientBrush>
            </Setter>
        </Style>
   

   And then you could cover it with the new style. frmTest2GradientStyle is the style which i set in Application.Resources.

   frmTest2.Style = (Style)Application.Current.Resources["frmTest2GradientStyle"];
   

2. If you set the background in Frame like below, you could change the background instead of Background.

   <Frame x:Name="frmTest3" Style="{StaticResource wlHeaderGradient2}">
                <Frame.Background>
                    <LinearGradientBrush EndPoint="0,1">
                        <GradientStop Color="{DynamicResource grdHeaderBGColor1}" Offset="0.0" />
                        <GradientStop Color="{DynamicResource  grdHeaderBGColor2}" Offset="0.5" />
                        <GradientStop Color="{DynamicResource grdHeaderBGColor1}" Offset="1.0" />
                    </LinearGradientBrush>
                </Frame.Background>
            </Frame>
   

   Change the background in code:

        GradientStopCollection gradientStops = new GradientStopCollection();
        gradientStops.Add(new GradientStop() { Color = Color.Green, Offset = (float)0.0 });
        gradientStops.Add(new GradientStop() { Color = Color.Red, Offset = (float)0.5 });
        gradientStops.Add(new GradientStop() { Color = Color.Green, Offset = (float)1.0 });
   
        LinearGradientBrush linearGradientBrush = new LinearGradientBrush()
        {
            EndPoint = new Point(0, 1),
            GradientStops = gradientStops
        };
   
        frmTest3.Background = linearGradientBrush;
   

Transparent text cut out of background

It's possible with css3 but it's not supported in all browsers

With background-clip: text; you can use a background for the text, but you will have to align it with the background of the page

body {
    background: url(http://www.color-hex.com/palettes/26323.png) repeat;
    margin:10px;
}
h1 { 
    background-color:#fff;
    overflow:hidden;
    display:inline-block; 
    padding:10px; 
    font-weight:bold;
    font-family:arial;
    color:transparent;
    font-size:200px;
}
span { 
    background: url(http://www.color-hex.com/palettes/26323.png) -20px -20px repeat;
    -webkit-text-fill-color: transparent;
    -webkit-background-clip: text;
    display:block;
}

<h1><span>ABCDEFGHIKJ</span></h1>

---

Related Topics