You can make use of LongClick event :
var button = new Button(this);
button.LongClick += (object sender, Android.Views.View.LongClickEventArgs e) => {
};
KeyPress Event :
button.KeyPress += (object sender, Android.Views.View.KeyEventArgs e) => {
};
*********
Refer :
- https://developer.xamarin.com/api/type/Android.Views.KeyEvent/
- http://developer.android.com/reference/android/view/KeyEvent.html
- http://code.tutsplus.com/tutorials/android-sdk-intercepting-physical-key-events--mobile-10379
***
***
**Edit**
-
*Make use of OnTouch Event identify the motionEvent.*
Eg :
public class MyTouchListener
: Java.Lang.Object
, View.IOnTouchListener
{
public bool OnTouch(View v, MotionEvent e)
{
if (e.Action == MotionEventActions.Down)
{
// do stuff
return true;
}
if (e.Action == MotionEventActions.Up)
{
// do other stuff
return true;
}
return false;
}
}
OR
Button button = FindViewById<Button> (Resource.Id.myButton);
var count = 0;
var handled = false;
button.Touch += (s, e) => {
if(e.Event.Action == Android.Views.MotionEventActions.Down)
{
// Do stuff.
System.Console.WriteLine("Counting ... " + count.ToString());
count++;
handled = true;
}
else if (e.Event.Action == Android.Views.MotionEventActions.Up)
{
// Do stuff.
System.Console.WriteLine("Counting ... " + count.ToString());
count++;
handled = true;
}
e.Handled = handled;
};
Refer :
- https://stackoverflow.com/a/10511800/3891036
- https://stackoverflow.com/a/25223860/3891036
You either a. use the `Touch` event:
button1.Touch += (s, e) =>
{
var handled = false;
if (e.Event.Action == MotionEventActions.Down)
{
// do stuff
handled = true;
}
else if (e.Event.Action == MotionEventActions.Up)
{
// do other stuff
handled = true;
}
e.Handled = handled;
};
Or you can explicitly implement the `IOnTouchListener` interface (C# does not have anonymous classes). Note that when implementing Java interfaces, you also need to inherit from `Java.Lang.Object` as we need a handle to the Java side of the story (this is obviously not needed when we use the `Touch` event).
public class MyTouchListener
: Java.Lang.Object
, View.IOnTouchListener
{
public bool OnTouch(View v, MotionEvent e)
{
if (e.Action == MotionEventActions.Down)
{
// do stuff
return true;
}
if (e.Action == MotionEventActions.Up)
{
// do other stuff
return true;
}
return false;
}
}
Then set it with:
button1.SetOnTouchListener(new MyTouchListener());
Note using the latter approach also needs you to handle passing of references to objects that you want to modify in your `OnTouchListener` class, this is not needed with the C# Event.
**EDIT:**
As a side note, if you use the `Touch` event or any other event, please remember to be a good citizen and unhook the event when you are not interested in receiving it anymore. Worst case, if you forget to unhook the event, you will leak memory because the instance cannot be cleaned up.
So in the first example, don't use a anonymous method:
button1.Touch += OnButtonTouched;
And remember to unhook it:
button1.Touch -= OnButtonTouched;
