Reputation: 65
I want to achieve this functionality: dynamically add multiple button to the scrollview, if scrollview more than a certain height, it is will automatically diplay scroll bar.
can you give me some advice?
Upvotes: 3
Views: 17115
Reputation: 81
It's an example for Xamarin C#.
<ContentPage.Content>
<ScrollView x:Name="ScrollLogonID"
BackgroundColor="Transparent"
HorizontalOptions="FillAndExpand" Opacity="0.85">
<StackLayout Opacity="0.85">
<StackLayout
x:Name="LogoID"
BackgroundColor="Transparent"
VerticalOptions="Start"
Opacity="0.65"
HorizontalOptions="FillAndExpand">
<!--- place the button here -->
</StackLayout>
</StackLayout>
</ScrollView>
</ContentPage.Content>
<!--
/*
C# Code snippet
*/-->
Xamarin.Forms.Button btnEnter = new Xamarin.Forms.Button {
Text = "Entrar",
HorizontalOptions = LayoutOptions.FillAndExpand,
FontSize = 18,
HeightRequest = 26,
TextColor = Color.LightGray,
BackgroundColor = Color.DarkRed
};
StackLayout stkButton = new StackLayout{ Children = { btnEnter }};
this.FindByName<StackLayout>("LogonID").Children.Add(stkButton);
Upvotes: 1
Reputation: 785
Here is my example in layout file :
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/scrollView" >
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:layout_width="fill_parent"
android:layout_height="120dp"
android:id="@+id/button4" />
<Button
android:layout_width="fill_parent"
android:layout_height="120dp"
android:id="@+id/button" />
<Button
android:layout_width="fill_parent"
android:layout_height="120dp"
android:id="@+id/button9" />
<Button
android:layout_width="fill_parent"
android:layout_height="120dp"
android:id="@+id/button10" />
</LinearLayout>
</ScrollView>
Upvotes: 0
Reputation: 8243
check the following code snippet:
// Find the ScrollView
ScrollView scrollView = (ScrollView) findViewById(R.id.scrollView1);
// Create a LinearLayout element
LinearLayout linearLayout = new LinearLayout(this);
linearLayout.setOrientation(LinearLayout.VERTICAL);
// Add Buttons
Button button = new Button(this);
button.setText("Some text");
linearLayout.addView(button);
// Add the LinearLayout element to the ScrollView
scrollView.addView(linearLayout);
Quoted from How do I add elements dynamically to a view created with XML.
Upvotes: 8
Reputation: 3415
Put for example a linearlayout in the scrollview, then add the buttons to the linearlayout. Problem solved.
Upvotes: 2
Reputation: 2139
Since scrollview can host only one direct child. You can add a linearLayout
to the ScrollView
and programmatically add buttons to that LinearLayout
Upvotes: 0