Improved Android's onClick

It wrote that there's no "MouseEvent" on Android, actually there is android.view.MotionEvent. This sounds misleading.
Here is proposal for improvement to pass through View parameter in onClick.

Author: mice777

ui/coroutines-guide-ui.md

@@ -306,7 +306,7 @@ update the text. Try it. It does not look very good. We'll fix it later.
 
 > On Android, the corresponding extension can be written for `View` class, so that the code
   in `setup` function that is shown above can be used without changes. There is no `MouseEvent`
-  on Android, so it is omitted.
+  used in OnClickListener on Android, so it is omitted.
 
 ```kotlin
 fun View.onClick(action: suspend () -> Unit) {
@@ -352,18 +352,18 @@ animation is running. This happens because the actor is busy with an animation a
 By default, an actor's mailbox is backed by [RendezvousChannel], whose `offer` operation succeeds only when 
 the `receive` is active. 
 
-> On Android, there is no `MouseEvent`, so we just send a `Unit` to the actor as a signal. 
+> On Android, there is `View` sent in OnClickListener, so we send the `View` to the actor as a signal. 
   The corresponding extension for `View` class looks like this:
 
 ```kotlin
-fun View.onClick(action: suspend () -> Unit) {
+fun View.onClick(action: suspend (View) -> Unit) {
     // launch one actor
-    val eventActor = actor<Unit>(UI) {
-        for (event in channel) action()
+    val eventActor = actor<View>(UI) {
+        for (event in channel) action(event)
     }
     // install a listener to activate this actor
     setOnClickListener { 
-        eventActor.offer(Unit)
+        eventActor.offer(it)
     }
 }
 ```