Today I will show you how to write simple android app. In this tutorial you can learn how to create Event in android using c# with xamarin.
Steps
- · Create new project.
- Expand resource folder
- Click on layout folder
- Double click Main.axml file
- · Click source
Paste blow code in source.
<LinearLayout xmlns:android=“http://schemas.android.com/apk/res/android“
android:orientation=“vertical“
android:layout_width=“match_parent“
android:layout_height=“match_parent“>
<Button
android:text=“Click Me“
android:layout_width=“match_parent“
android:layout_height=“wrap_content“
android:id=“@+id/button1“ />
<Button
android:text=“Sum“
android:layout_width=“match_parent“
android:layout_height=“wrap_content“
android:id=“@+id/button2“ />
<Button
android:text=“Substract“
android:layout_width=“match_parent“
android:layout_height=“wrap_content“
android:id=“@+id/button3“ />
</LinearLayout>
Open MainActivity cs file and paste below code.
FindViewById method – This method finds a view that was identified by the id attribute from the XML that was passed in Activity.OnCreate(Bundle).
protected override voidOnCreate(Bundle bundle)
{
base.OnCreate(bundle);
// Set our view from the “main” layout resource
SetContentView (Resource.Layout.Main);
Button clickbtn = FindViewById<Button>(Resource.Id.button1);
Button sumbtn = FindViewById<Button>(Resource.Id.button2);
Button subbtn = FindViewById<Button>(Resource.Id.button3);
clickbtn.Click += btn_click;
sumbtn.Click += sumbtn_click;
subbtn.Click += subbtn_click;
}
private voidbtn_click(object sender, EventArgs e)
{
Toast.MakeText(this, “Click me”, ToastLength.Short).Show();
}
private voidsubbtn_click(object sender, EventArgs e)
{
Int32 a = 26, b = 15,c=0;
c = a – b;
Toast.MakeText(this, “substract “ + a + ” – “ + b + “=” + c, ToastLength.Short).Show();
}
private voidsumbtn_click(object sender, EventArgs e)
{
Int32 a = 10, b = 15, c = 0;
c = a + b;
Toast.MakeText(this, “Sum “ + a + ” + “ + b + “=” + c, ToastLength.Short).Show();
}
