Develop Reference

How to make ontouchlistener work in such way it respond different when holding and when only touching?

I have a button , on which calling onTouchListener , I want to set different behavior . 1. if it is being pressed ,
2.when user just touch the button

You're probably better off using an OnLongClickListener rather than an onTouch. You can set one just like an onClick and it will call you when a press and hold has occurred.
If you did want to implement it via onTouch, you'd set a timer in the touchDown. If the user has a touchUp, cancel the timer. If not, when the timer goes off it is now a touch and hold and you perform whatever behavior you wanted to.

capturing touch events without consuming them

I've got a big headache and spent a few hours to solve my problem withou any reasonable results.
I use a custom adapter (extending ArrayAdapter) to show listview items. This adapter implements OnTouchListener. There's also a background selector which color is changing when an item is touched and OnItemClickListener in ListViewActivity.
What I need is capture touch events (all of them, not only ACTION_DOWN) in the adapter. When onTouch returns false, the consecutive events (ACTION_CANCEL, ACTION_UP etc.) aren't captured. On the other hand returning true stops dispatching all other events (e.g. click) so that the ListViewActivity's onItemClick is never triggered.
I tried hard to find any working solution in SO and other resources, but with no success.
One idea was not worry about click events and background. I may set the background programatically and trigger click event the same way when the onTouch action is ACTION_UP, but view.performClick() does nothing (view is the 1st argument of onTouch method).
[EDIT]
To make it clear, I want to handle touch events in the adapter beacuse I need the textview in the item to marquee when the user touches it. Thus, in onTouch, when the action equals ACTION_DOWN, I assign true to setSelected property of the textview and, consequently, false when ACTION_CANCEL or ACTION_UP.
Any suggestions?
Thanks in advance.

How can I know when the button isn't clicked anymore

I have some problem - I must know when the button isn't clicked anymore. I need something like onClickListener which is executed when the user stops holding his finger on the button. Is it even possible?

Use onTouchListener and check for MotionEvent ACTION_UP (return true in your implementation to make Android know that you are handling the whole Touch event)

Yes. What you should do is register on touch handler:
button.setOnTouchListener(listener)
and in the listener you should check the event if it's action is ACTION_UP. That's all.

what is considered `click event` in android?

in iOS world, there's a concept of touchUpInside, touch started within a view and user lifted a finger within a view bound.
I see touch vs click (event listeners) in android, and I'd like to know the difference between them.

Touch events are much more basic. There's many varieties. The most common being:
DOWN: The user touch the item
MOVE: The user shifts around the item after touching it
UP: The user stops touch the item
CANCEL: The user shifts off the item but is still touching the screen.
In Android, a click event is a composite of touch events. In the case of click it's both DOWN and UP action. There are others that can be found in a GestureDetector. Fling for example is a combination of DOWN, MOVE, and UP in a fast motion that signifies the user swiped the finger really fast.
EDIT:
Clarification on how Android handles the true and false in onTouchEvent().
It's not very well documented, but the way the Views work in Android is that when you touch a View, it will send that touch event from the parent view to all children views. Each child will then send the event to it's children. This is done in the dispatchTouchEvent() method.
When a parent View receives false from the child's onTouchEvent() method, it will no longer send touch events to that child. Meaning that when you're view returns false in onTouchEvent(), your View is really says:
I am done processing touch events and all of my children are done as well.
90% of the time, in onTouchEvent() you would do return super.onTouchEvent() to return the touch values of all the children in the View.
So let's look at your click example. Here's one way to do it in which you return false on a DOWN event, but true on an UP.
#Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
return false;
case MotionEvent.ACTION_UP:
return true;
break;
default:
return false;
}
}
In this case, the parent of this View will receive false immediately. After which, it will stop sending touch events to this View because you said it was done.
Here's another way:
boolean mPossibleClick = false;
#Override
public boolean onTouchEvent(MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mPossibleClick = true;
break;
case MotionEvent.ACTION_UP:
if(mPossibleClick) {
// UP event immediately after DOWN. Perform click action
}
default:
mPossibleClick = false;
}
return mPossibleClick;
}
It's rather crude, but basically here's what will happen. When the user first touches it, you will receive DOWN which will return true. If the user lifts the finger, it will perform a click action after which will return false because the event is done. If the user moves his finger or any other action is performed, it will return false and the click will be nulled out.
That last one is not the best way to implement a click, but I think it illustrates what I'm trying to say. In real life, move events are extremely common if even for a couple pixels.

onClickListener is used whenever a click event for any view is raised, say for example: click event for Button, ImageButton.
onTouchListener is used whenever you want to implement Touch kind of functionality, say for example if you want to get co-ordinates of screen where you touch exactly.
Definitions:
onClickListner: Interface definition for a callback to be invoked when a view is clicked.
onTouchListener: Interface definition for a callback to be invoked when a touch event is dispatched to this view. The callback will be invoked before the touch event is given to the view.
Details:
onClickListener: http://developer.android.com/reference/android/view/View.OnClickListener.html
onTouchListener: http://developer.android.com/reference/android/view/View.OnTouchListener.html

refer to the response of PH7
which one is better to use?
It really depends on your requirement.
onTouch gives you Motion Event. Thus, you can do a lot of fancy things as it help you separate state of movement. Just to name a few
ACTION_UP
ACTION_DOWN
ACTION_MOVE
Those are common actions we usually implement to get desire result such as dragging view on screen.
On the other hand, onClick doesn't give you much except which view user interacts. onClick is a complete event comprising of focusing,pressing and releasing. So, you have little control over it. One side up is it is very simple to implement.
do we need to implement both?
It is not necessary unless you want to mess up with your user. If you just want simple click event, go for onClick. If you want more than click, go for onTouch. Doing both will complicate the process.
From User point of view, it is unnoticeable if you implement onTouch carefully to look like onClick.
for more details : refer this and this

Android tableview behaving as a listview

I am using table layout to display data, but i want it to behave like list items
(ability to select, when select change background, when click, having hover effect, click able) for that purpose i am using following listeners
OnClickListener(to perform action)
OnFocusChangeListener(To change background color)
OnTouchListener(to focus specific row)
Now problem is when user touch any item it get focus first and then have to touch again to fire onclick event, to fix this i made a change and ontouch i fire action on specific to row.
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getAction() != MotionEvent.ACTION_UP){
v.requestFocus();
int viewId= v.getId();
handleEvent(viewId);//Switch cases to perform row specific actions.
}
return false;
}
now if user touch the row event get fired that works perfect, But one more problem rises here when even user want to scroll down the data via dragging finger onto the screen ontouch event get fired.... and action automatically performed although user think it will scroll down the screen.

I don't know if this solution is applicable in your case, but maybe you can do like this:
Let's assume that user clicked your item (so probably you will get sequence of three events to your OnTouch() method: ACTION_ DOWN, ACTION_ MOVE (not necessarily) and ACTION_UP. Now you can react accordingly.
If it's ACTION_DOWN, you can save x and y coordinates.
If it's ACTION_ MOVE, take its x and y and calculate the distance from corresponding ACTION_DOWN. If it's longer than some assumed value, then make the scroll and set the flag indicating that items were scrolled.
If it's ACTION_UP check your flag. If items were not scrolled, fire your action and clear the flag.
Probably calculations is not what you should do in ACTION_MOVE event, because it should be fast, but give it a try.
Regards!