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[Android] Invalidate Button background drawable if size changes #11604

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merged 1 commit into from
Dec 1, 2022
Merged

[Android] Invalidate Button background drawable if size changes #11604

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8 changes: 6 additions & 2 deletions src/Controls/samples/Controls.Sample/Pages/Controls/ButtonPage.xaml
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Original file line number Diff line number Diff line change
Expand Up @@ -14,7 +14,8 @@
<Button
Text="Button"/>
<Button
Text="Button with Tooltip" ToolTipProperties.Text="This is a tooltip!" />
Text="Button with Tooltip"
ToolTipProperties.Text="This is a tooltip!" />
<Label
Text="Disabled"
Style="{StaticResource Headline}"/>
Expand Down Expand Up @@ -43,7 +44,10 @@
Text="Background"
Style="{StaticResource Headline}" />
<Button
Text="Background">
x:Name="BackgroundButton"
Text="Background"
HorizontalOptions="Center"
Clicked="OnBackgroundButtonClicked">
<Button.Background>
<LinearGradientBrush EndPoint="1,0">
<GradientStop Color="Yellow"
Expand Down
8 changes: 8 additions & 0 deletions src/Controls/samples/Controls.Sample/Pages/Controls/ButtonPage.xaml.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -72,6 +72,14 @@ LineBreakMode SelectLineBreakMode()
return LineBreakMode.WordWrap;
}
}

int _backgroundCount;

void OnBackgroundButtonClicked(object sender, System.EventArgs e)
{
BackgroundButton.Text = $"Background tapped {_backgroundCount} times";
_backgroundCount++;
}
}

public class ButtonPageViewModel : BindableObject
Expand Down
8 changes: 8 additions & 0 deletions src/Core/src/Handlers/Button/ButtonHandler.Android.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,7 @@ protected override void ConnectHandler(MaterialButton platformView)
platformView.SetOnTouchListener(TouchListener);

platformView.FocusChange += OnNativeViewFocusChange;
platformView.LayoutChange += OnPlatformViewLayoutChange;

base.ConnectHandler(platformView);
}
Expand All @@ -57,6 +58,7 @@ protected override void DisconnectHandler(MaterialButton platformView)
platformView.SetOnTouchListener(null);

platformView.FocusChange -= OnNativeViewFocusChange;
platformView.LayoutChange -= OnPlatformViewLayoutChange;

ImageSourceLoader.Reset();

Expand Down Expand Up @@ -157,6 +159,12 @@ void OnNativeViewFocusChange(object? sender, AView.FocusChangeEventArgs e)
VirtualView.IsFocused = e.HasFocus;
}

void OnPlatformViewLayoutChange(object? sender, AView.LayoutChangeEventArgs e)
{
if (sender is MaterialButton platformView && VirtualView != null)
platformView.UpdateBackground(VirtualView);
}

class ButtonClickListener : Java.Lang.Object, AView.IOnClickListener
{
public ButtonHandler? Handler { get; set; }
Expand Down