Button
A Button object represents a clickable Button on the screen.
Example:
< Button
android:id="@+id/swimmersButton"
android:onClick = "swimmersButtonClick"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_span="3"
android:text="Swimmers"
/>
You can declare a reference to the Button in code.
You only need a reference if you need to refer to the Button.
private Button swimmersButton;
You can get a reference to it by calling findViewById
You usually do this in the onCreate method
swimmersButton = (Button) findViewById(R.id.swimmersButton);
// Click event in Java code
public void swimmersButtonClick(View v)
{
// do whatever
}