activity indicator, web view

XamarinStudy/XamarinStudy/XamarinStudy/Views/SampleElementPage3.xaml

@@ -6,7 +6,7 @@
         <StackLayout>
             <Image Source="https://cdn4.iconfinder.com/data/icons/social-media-2146/512/28_social-256.png"/>
             <Image Source="{OnPlatform Android=droid.png, UWP=assets/droid.png}" BindingContext="{x:Reference imageSizePicker}" HeightRequest="{x:Binding SelectedItem}" Aspect="AspectFit"/>
-            <Picker x:Name="imageSizePicker" Title="Image Size">
+            <Picker x:Name="imageSizePicker" Title="Image Size" SelectedItem="50" SelectedIndexChanged="imageSizePicker_SelectedIndexChanged">
                 <Picker.Items>
                     <x:String>50</x:String>
                     <x:String>100</x:String>
@@ -17,6 +17,8 @@
             <DatePicker x:Name="dataPicker" Format="yyyy-MM-dd"></DatePicker>
             <Label x:Name="timePickerLabel" BindingContext="{x:Reference timePicker}" Text="{x:Binding Time, StringFormat='{0:hh\\:mm\\.fff}'}"/>
             <TimePicker x:Name="timePicker"/>
+            <ActivityIndicator x:Name="activityIndicator" Color="Salmon" IsRunning="False"/>
+            <WebView x:Name="webView" Source="https://google.com" VerticalOptions="FillAndExpand" Navigating="webView_Navigating" Navigated="webView_Navigated"/>
         </StackLayout>
     </ContentPage.Content>
 </ContentPage>

XamarinStudy/XamarinStudy/XamarinStudy/Views/SampleElementPage3.xaml.cs

@@ -16,5 +16,20 @@ namespace XamarinStudy.Views
 		{
 			InitializeComponent();
 		}
+
+		private void imageSizePicker_SelectedIndexChanged(object sender, EventArgs e)
+		{
+			activityIndicator.IsRunning = false;
+		}
+
+		private void webView_Navigating(object sender, WebNavigatingEventArgs e)
+		{
+			activityIndicator.IsRunning = true;
+		}
+
+		private void webView_Navigated(object sender, WebNavigatedEventArgs e)
+		{
+			activityIndicator.IsRunning = false;
+		}
 	}
 }