Cfrgtkky

We have upgraded from Xamarin Forms 2.5 to 3.4.
The ProgressBar on Android becomes thicker and not controllable by XAML's HeightRequest, while it was before.

It is within a grid layout.

Any ideas how to control the height?

You can modify the height of the progressbar by using Render in xamarin.

CustomProgressBarRenderer.cs

using Android.OS;

using Android.Runtime;

using Android.Views;

using Android.Widget;

using Xamarin.Forms;

using Xamarin.Forms.Platform.Android;



[assembly: ExportRenderer(typeof(App69.CustomProgressBar), typeof(App69.Droid.CustomProgressBarRenderer))]

namespace App69.Droid

{

    public class CustomProgressBarRenderer : ProgressBarRenderer

    {

        public CustomProgressBarRenderer(Context context) : base(context) { }

        protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.ProgressBar> e)

        {

            base.OnElementChanged(e);

            if (Control != null)

            {

                Control.ScaleY = 10; //Changes the height

            }

        }

    }

}

MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"

             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

             xmlns:local="clr-namespace:App69"

             x:Class="App69.MainPage">



    <Grid>

        <Grid.RowDefinitions>

            <RowDefinition Height="*" />

            <RowDefinition Height="*" />

        </Grid.RowDefinitions>

        <Grid.ColumnDefinitions>

            <ColumnDefinition Width="*" />

            <ColumnDefinition Width="*" />

        </Grid.ColumnDefinitions>

        <Label Text="Top Left" Grid.Row="0" Grid.Column="0" />

        <Label Text="Top Right" Grid.Row="0" Grid.Column="1" />

        <Label Text="Bottom Left" Grid.Row="0" Grid.Column="1" />

        <local:CustomProgressBar Progress="0.5"  Grid.Row="1" Grid.Column="1" />

    </Grid>



</ContentPage>

 class CustomProgressBarRenderer : ProgressBarRenderer

    {

        /// <summary>

        /// Raises the <see cref="E:ElementChanged" /> event.

        /// </summary>

        /// <param name="e">The <see cref="ElementChangedEventArgs{Xamarin.Forms.ProgressBar}"/> instance containing the event data.</param>

        protected override void OnElementChanged(ElementChangedEventArgs<Xamarin.Forms.ProgressBar> e)

        {

            base.OnElementChanged(e);

            var element = Element as CustomProgressBar;

            Control.IndeterminateDrawable.SetColorFilter(element.BarColor.ToAndroid(), PorterDuff.Mode.SrcIn);

            Control.ProgressDrawable.SetColorFilter(element.BarColor.ToAndroid(), PorterDuff.Mode.SrcIn);

            Control.ScaleY = element.BarHeight;

        }



        /// <summary>

        /// Called when [element property changed].

        /// </summary>

        /// <param name="sender">The sender.</param>

        /// <param name="e">The <see cref="PropertyChangedEventArgs"/> instance containing the event data.</param>

        protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)

        {

            base.OnElementPropertyChanged(sender, e);

            var element = Element as CustomProgressBar;

            Control.IndeterminateDrawable.SetColorFilter(element.BarColor.ToAndroid(), PorterDuff.Mode.SrcIn);

            Control.ProgressDrawable.SetColorFilter(element.BarColor.ToAndroid(), PorterDuff.Mode.SrcIn);

            Control.ScaleY = element.BarHeight;

        }

    }