Hi,
A nice simple solution is this
using System;
using System.Collections.Generic;
using Android.App;
using Android.Content;
using Android.Runtime;
using Android.Views;
using Android.Widget;
using Android.OS;
namespace spinner
{
[Activity (Label = "spinner", MainLauncher = true)]
public class Activity1 : Activity
{
protected override void OnCreate (Bundle bundle)
{
base.OnCreate (bundle);
// Set our view from the "main" layout resource
SetContentView (Resource.Layout.Main);
TextView courseResult = FindViewById<TextView>
(Resource.Id.textCourse);
Spinner courseTitle = FindViewById<Spinner>
(Resource.Id.spinner1);
List<string> courses = new List<string> ();
courses.AddRange (new string[]{"Chemistry", "Physics", "Biology",
"Maths", "German"});
List<int> courseNumbers = new List<int> ();
courseNumbers.AddRange (new int[] {101, 202, 303, 404,
505});
ArrayAdapter<string> adapter = new ArrayAdapter<string> (this,
Android.Resource.Layout.SimpleSpinnerDropDownItem);
foreach (string s in courses)
adapter.Add (s);
courseTitle.Adapter = adapter;
courseTitle.ItemSelected += (object sender,
AdapterView.ItemSelectedEventArgs e) =>
{
courseResult.Text = courseNumbers
[e.Position].ToString ();
};
}
}
}
with the view being
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="horizontal"
android:minWidth="25px"
android:minHeight="25px"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/linearLayout1"
android:gravity="center_horizontal">
<TextView
android:text="Course title"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:id="@+id/textCourseName"
android:layout_marginRight="12.7dp" />
<Spinner
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:id="@+id/spinner1" />
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:minWidth="25px"
android:minHeight="25px"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/linearLayout2"
android:layout_marginTop="12dp"
android:gravity="center_horizontal">
<TextView
android:text="Course number"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:id="@+id/textView1"
android:layout_marginRight="8.0dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:id="@+id/textCourse" />
</LinearLayout>
</LinearLayout>
This code won't save the spinner values or anything like that, it's just
a quick demo to show you how it's done.
Can I suggest that you read the recipes on the Xamarin website as well?
There are a lot of demos on there that would help you with the problems
you're seeing.
Remember, unless it's android specific, bog standard C# works. Even if
it is android specific, you can still use bog standard C# in the code.
For example, in my quick and simple solution, I could have used a
dictionary(int, string). This associates an int with a string and is
rather a neat way to code, however, it's overkill here.
Paul
--
"Space," it says, "is big. Really big. You just won't believe how
vastly, hugely, mindbogglingly big it is. I mean, you may think it's a
long way down the road to the chemist's, but that's just peanuts to
space, listen..."
Hitch Hikers Guide to the Galaxy, a truly remarkable book!
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