I have this style:
<Style x:Key="pointButton" TargetType="Button">
<Setter Property="BorderColor" Value="#999999"/>
<Setter Property="BorderWidth" Value="1" />
<Setter Property="TextColor" Value="#AAAAAA" />
<Setter Property="FontAttributes" Value="Bold" />
<Setter Property="HorizontalOptions" Value="FillAndExpand" />
<Setter Property="VerticalOptions" Value="StartAndExpand" />
<Setter Property="Margin" Value="10,10,10,10" />
<Setter Property="HeightRequest" Value="40" />
</Style>
I would like to include this. Is it possible?
<Button.FontSize>
<OnPlatform x:TypeArguments="x:Double" iOS="25" Android="20" />
</Button.FontSize>
With the new Xamarin OnPlatform specification is possible to define the platform styles directly in the style tag:
<Style x:Key="buttonStyle" TargetType="Button">
<Setter Property="FontSize">
<OnPlatform x:TypeArguments="x:Double">
<On Platform="Android">40</On>
<On Platform="iOS">10</On>
</OnPlatform>
</Setter>
</Style>
Define every property as OnPlatform
<OnPlatform x:Key="MyFontSize" x:TypeArguments="x:Double" iOS="14" Android="14" WinPhone="14" />
and refer it in yout button style like
<Style x:Key="MyButtonStyle" TargetType="{x:Type Button}">
<Setter Property="FontSize" Value="{StaticResource MyFontSize}" />
</Style>
Related
How to override default blue titlebar color of Xamarin.Forms UWP app through AppShell style or something?
Color Problem
If you want to change the Blue color of the bar of your sceenshot in shell app,you can set the value of property Shell.BackgroundColor:
<Shell.Resources>
<ResourceDictionary>
<Style x:Key="BaseStyle" TargetType="Element">
<!--change the color here-->
<Setter Property="Shell.BackgroundColor" Value="#96F3" />
<Setter Property="Shell.ForegroundColor" Value="White" />
<Setter Property="Shell.TitleColor" Value="White" />
<Setter Property="Shell.DisabledColor" Value="#B4FFFFFF" />
<Setter Property="Shell.UnselectedColor" Value="#95FFFFFF" />
<Setter Property="Shell.TabBarBackgroundColor" Value="{StaticResource Primary}" />
<Setter Property="Shell.TabBarForegroundColor" Value="White"/>
<Setter Property="Shell.TabBarUnselectedColor" Value="#95FFFFFF"/>
<Setter Property="Shell.TabBarTitleColor" Value="White"/>
</Style>
<Style TargetType="TabBar" BasedOn="{StaticResource BaseStyle}" />
<Style TargetType="FlyoutItem" BasedOn="{StaticResource BaseStyle}" />
</ResourceDictionary>
</Shell.Resources>
I am new to xamarin.forms development and I am using VisualStudio 2019 to achieve the same. I am developing a sample shell application but unable to change the colour of toolbar(blue color in the picture). Could anyone please help me on this issue.
We could set the background color by add BackgroundColor="Green" in the shell.xaml
For example we set it it Green
<Shell xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
xmlns:local="clr-namespace:xxx"
Title="xxx"
BackgroundColor="Green"
x:Class="xxx.AppShell">
This will let color of TabBar been changed to green at the same time . So we should create styles for TabBar.
<Shell.Resources>
<ResourceDictionary>
<Color x:Key="NavigationPrimary">#2196F3</Color> //color of TabBar
<Style x:Key="BaseStyle" TargetType="Element">
<Setter Property="Shell.BackgroundColor" Value="{StaticResource NavigationPrimary}" />
<Setter Property="Shell.ForegroundColor" Value="White" />
<Setter Property="Shell.TitleColor" Value="White" />
<Setter Property="Shell.DisabledColor" Value="#B4FFFFFF" />
<Setter Property="Shell.UnselectedColor" Value="#95FFFFFF" />
<Setter Property="Shell.TabBarBackgroundColor" Value="{StaticResource NavigationPrimary}" />
<Setter Property="Shell.TabBarForegroundColor" Value="White"/>
<Setter Property="Shell.TabBarUnselectedColor" Value="#95FFFFFF"/>
<Setter Property="Shell.TabBarTitleColor" Value="White"/>
</Style>
<Style x:Key="MyBaseStyle" TargetType="Element">
<Setter Property="Shell.ForegroundColor" Value="White" />
<Setter Property="Shell.TitleColor" Value="White" />
<Setter Property="Shell.DisabledColor" Value="#B4FFFFFF" />
<Setter Property="Shell.UnselectedColor" Value="#95FFFFFF" />
<Setter Property="Shell.TabBarBackgroundColor" Value="{StaticResource NavigationPrimary}" />
<Setter Property="Shell.TabBarForegroundColor" Value="White"/>
<Setter Property="Shell.TabBarUnselectedColor" Value="#95FFFFFF"/>
<Setter Property="Shell.TabBarTitleColor" Value="White"/>
</Style>
<Style TargetType="ShellItem" BasedOn="{StaticResource BaseStyle}" />
<Style TargetType="TabBar" BasedOn="{StaticResource MyBaseStyle}" />
</ResourceDictionary>
</Shell.Resources>
<!-- Your Pages -->
<TabBar >
<Tab Title="xxx" Icon="xxx" >
<ShellContent ContentTemplate="{DataTemplate xxx}" />
</Tab>
<Tab Title="xxx" Icon="xxx">
<ShellContent ContentTemplate="{DataTemplate xxx}" />
</Tab>
</TabBar>
I'm trying to style Navigation page on xamarin forms app with Mvvmcross.
before "adding" mmvcross I've defined style in App.xaml as follows.
<Style TargetType="NavigationPage">
<Setter Property="BarBackgroundColor" Value="Black" />
<Setter Property="BarTextColor" Value="White" />
</Style>
and it worked. I got background color and text color as i defined. Then we "moved" to Mvvmcross - we added all needed backend code, changed all pages from ContentPage to MvxContentPage etc and... background color of navigation page stopped working on Android (I haven't tried on iOS). If i change BarTextColor in App.xaml changes apply, color is changed. if i change BackgroundColor it also works - all application background color is changed. but no matter what value i apply to BarBackgroundColor it is still white.
my App.xaml is as follows:
<?xml version="1.0" encoding="utf-8" ?>
<core:MvxFormsApplication xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:views="clr-namespace:MvvmCross.Forms.Views;assembly=MvvmCross.Forms"
xmlns:viewModels="clr-namespace:MvvmCross.ViewModels;assembly=MvvmCross"
xmlns:core="clr-namespace:MvvmCross.Forms.Core;assembly=MvvmCross.Forms"
xmlns:attributes="clr-namespace:MvvmCross.Forms.Presenters.Attributes;assembly=MvvmCross.Forms"
x:Class="ShowMeTheLogs.Core.FormsApp">
<core:MvxFormsApplication.Resources>
<!--Global Styles-->
<Color x:Key="ColorPrimary">#98C340</Color>
<Color x:Key="ColorError">#CF1212</Color>
<Color x:Key="ColorWarning">#E4AD17</Color>
<Color x:Key="ColorInfo">#1283CF</Color>
<Color x:Key="ColorDebug">#989898</Color>
<Style TargetType="NavigationPage">
<Setter Property="BarBackgroundColor" Value="{StaticResource ColorPrimary}" />
<Setter Property="BarTextColor" Value="White" />
</Style>
<Style x:Key="SubmitButton" TargetType="Button">
<Setter Property="BackgroundColor" Value="{StaticResource ColorPrimary}" />
<Setter Property="TextColor" Value="White" />
</Style>
<Style x:Key="circleButton" TargetType="Button">
<Setter Property="BackgroundColor" Value="{StaticResource ColorPrimary}" />
<Setter Property="BorderRadius" Value="50" />
<Setter Property="WidthRequest" Value="100" />
<Setter Property="HeightRequest" Value="100" />
<Setter Property="TextColor" Value="White" />
<Setter Property="FontSize" Value="50" />
</Style>
<Style x:Key="smallSquareButton" TargetType="Button">
<Setter Property="BackgroundColor" Value="{StaticResource ColorPrimary}" />
<Setter Property="WidthRequest" Value="100" />
<Setter Property="HeightRequest" Value="100" />
<Setter Property="TextColor" Value="White" />
<Setter Property="FontSize" Value="Micro" />
<Setter Property="HorizontalOptions" Value="Center" />
<Setter Property="VerticalOptions" Value="Center" />
</Style>
</core:MvxFormsApplication.Resources>
</core:MvxFormsApplication>
my App.xalm.cs is the simpliest as it can be:
public partial class FormsApp: MvxFormsApplication
{
public App()
{
InitializeComponent();
}
}
and the simpliest view:
<?xml version="1.0" encoding="utf-8" ?>
<views:MvxContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:views="clr-namespace:MvvmCross.Forms.Views;assembly=MvvmCross.Forms"
x:TypeArguments="viewModels:WebAppListViewModel"
x:Class="ShowMeTheLogs.Core.Views.WebAppListPage"
xmlns:bindings="clr-namespace:MvvmCross.Forms.Bindings;assembly=MvvmCross.Forms"
xmlns:viewModels="clr-namespace:ShowMeTheLogs.Core.ViewModels;assembly=ShowMeTheLogs.Core"
Title="Sample title"
NavigationPage.HasBackButton="False">
<ContentPage.ToolbarItems>
<ToolbarItem x:Name="AddNewApp" Order="Secondary" Text="Dodaj aplikację" Priority="0" Command="{bindings:MvxBind NewWebAppCommand}"/>
</ContentPage.ToolbarItems>
<RelativeLayout Padding="0" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<Non relevant="Code" />
</RelativeLayout>
</views:MvxContentPage>
I have literally no idea why it is not working. the only change in androud code was changing class RootActivity: CompatActivity to class RootActivity: MvxFormsAppCompatActivity
have enyone fought this problem before?
packages were obtained from NuGet
- MvvmCross (and MvvmCross.Forms) ver 6.2.2
- Xamarin ver 28.0.0
- Xamarin.Forms ver 3.4.0
In your MainActivity OnCreate method, make sure the two lines setting the Toolbar resource are before the base.OnCreate() call:
protected override void OnCreate(Bundle bundle)
{
TabLayoutResource = Resource.Layout.Tabbar;
ToolbarResource = Resource.Layout.Toolbar;
base.OnCreate(bundle);
}
https://github.com/MvvmCross/MvvmCross/issues/2301
My code so far looks like this:
<OnPlatform x:Key="smallLabelFontSize" x:TypeArguments="x:Double" iOS="12" Android="10" WinPhone="14" />
<Style x:Key="smallLabel" TargetType="Label">
<Setter Property="FontSize" Value="{StaticResource smallLabelFontSize}" />
<Setter Property="TextColor" Value="#999999" />
</Style>
Is there a way that I can set the FontSize in the style using the OnPlatform without having to reference smallLabelFontSize?
I looked here but can't see any example of how to do it
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/styles/xaml/application
Something like:
<Style TargetType="Label">
<Setter Property="FontSize">
<Setter.Value>
<OnPlatform x:TypeArguments="x:Double">
<On Platform="iOS" Value="12"/>
<On Platform="Android" Value="10"/>
</OnPlatform>
</Setter.Value>
</Setter>
</Style>
I have this XAML:
<Style x:Key="helpDetail" TargetType="Label">
<Setter Property="TextColor" Value="#555555" />
<Setter Property="FontSize" Value="14" />
</Style>
<Style x:Key="HelpGrid0" TargetType="Label">
<Setter Property="TextColor" Value="#555555" />
<Setter Property="FontSize" Value="14" />
<Setter Property="Grid.Column" Value="0" />
</Style>
<Style x:Key="HelpGrid1" TargetType="Label">
<Setter Property="TextColor" Value="#555555" />
<Setter Property="FontSize" Value="14" />
<Setter Property="Grid.Column" Value="1" />
</Style>
Is there a way that I can eliminate the need to specify FontSize in the 2nd two resources?
Sure, you can use style inheritance. Use the BasedOn attribute and specify the name of the style you want to base your second style on. You will then just have to specify the properties that are different from the first style.
I.e.:
<Style x:Key="HelpGrid0" TargetType="Label" BasedOn="{StaticResource helpDetail}">
<Setter Property="Grid.Column" Value="0" />
</Style>
More information: https://learn.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/styles/xaml/inheritance