I am using onTouchListener for a layout. I want to take the click outside the layout. I set onTouchListetener for the layout. But motion event always shows ACTION_DOWN. Even i touchOutside the view, It is not showing ACTION_OUTSIDE. Could anyone help me to find out why it is not showing constant ACTION_OUTSIDE. Here is the code i am using
Layout.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
Log.i("action",event.getAction()+"");
if (event.getAction() == MotionEvent.ACTION_OUTSIDE) {
Toast.makeText(getApplicationContext(), "check", Toast.LENGTH_SHORT).show();
return true;
}
return false;
}
});
If you return false, then you're signifying that you do not wish to receive further touch events. You need to return true to continue getting motion events.
Very simple to fix by adding this:
override fun onTouchEvent(event: MotionEvent): Boolean {
return true
}
The event listener itself listens to one event action at a time. The first of course is the ACTION.DOWN, in which your toast shows.
Just like what Jason Robinson and user936414, you have to return it to true so that the object or the listener could here the second event action, ACTION.OUTSIDE.
You will get ACTION_OUTSIDE when the touch is outside the activity and the flag FLAG_WATCH_OUTSIDE_TOUCH is set. Refer http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html#FLAG_WATCH_OUTSIDE_TOUCH
Related
I use onTouch as it is the best and more modifiable than for an instance onClick. It is a custom view that is being touched that I want to respond with action, and I have allready limited so you can't just touch and it does it over and over. Now I need it to limit the amount of simountanious taps.
EDIT:
#Override
public boolean onTouch(View v, MotionEvent event) {
lines++;
return false;
}
I have prevented constant action, but not the possibility to press with more than 1 finger, so that if you tap with more the rest of the fingers get ignored
There are several ways to do it.
best for you may be limit it inside in your overrided onTouch event.
if(event.getPointerCount() > 1) {
System.out.println("Multitouch detected!");
return true;
}
else
return super.onTouchEvent(event);
Another option is set attribute android:splitMotionEvents = false in your xml file.
I am trying to implement UI like google keep.
In the main layout there is frame layout in which there is a FAM(Floating Actions Menu) and a blackshadow view which is visible when FAM is expanded.
What i want is that when i touch the shadow view it should Collapse the FAM. To do that i have implemented onTouchlistner on shadowview.
shadowview.setOnTouchListener(new View.OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if(fam.isExpanded()){
fam.collapse();
}
return false;
}
});
But what happens is that when i touch the area with MyCardGridView's card (Which open's another activity) open's another activity. Which should not happen.
You should try to use return true; instead of return false;, because as the documentation says :
Returns:
True if the listener has consumed the event, false otherwise.
Maybe the issue here is caused by return false
I have a button that I would like clickable only by a stylus.
I used the method setClickable to enable or disable the click on the button, but how can I do that is clickable only with a pen?
the button should be clickable only when MotionEvent.TOOL_TYPE_STYLUS
how do i can?
you could override the Button's onTouchListener, and return immediately it the touch event is not performed through TOOL_TYPE_STYLUS. To retrieve this information, you can use
getToolType(int pointerX)
From the documentation
Gets the tool type of a pointer for the given pointer index
if it returns TOOL_TYPE_STYLUS, then you can simply check the MotionEvent for the ACTION_DOWN/ACTION_UP, and call performClick(). E.g.
b.setOnTouchListener(new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent event) {
if (event.getToolType(0) == MotionEvent.TOOL_TYPE_STYLUS) {
if (event.getAction() == MotionEvent.ACTION_UP ) {
performClick();
return true;
}
}
return false;
}
});
Hello right now I'm developing a custom view where there'll be 2 listview that the header can be stacked each other like this picture :
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I already succeed to create this view, by overriding overscrolled and intercept all touch and playing with the margin of the header contents. but the problem now is because I intercept all touch now I can't tap the content of the listview, I know the flow of the touch is from ACTION_DOWN -> ACTION_MOVE -> ACTION_UP, and then when I dispatch the event to the child the tap is working but the scroll isn't working at all.
So for now the flow for my view is like this onInterceptTouchEvent -> onTouch -> gestureListener (or with overscroll)
this is some part of my code
#Override
public boolean onInterceptTouchEvent(MotionEvent ev)
{
onTouchEvent(ev);
return true;
}
#Override
public boolean onTouch(View v, MotionEvent event) {
topListViewHeight = lvFirstListView.getTotalHeight() - rlFirstHeader.getHeight();
if(isBottomScrollable) {
listGestureDetector.onTouchEvent(event);
lvSecondListView.dispatchTouchEvent(event);
} else {
gestureDetector.onTouchEvent(event);
}
return true;
}
Is there anybody here have an idea about this? Any suggestion is very appreciated and if you need more question about this question please ask me.
Thanks before
When application is started I run a custom pop-up till a user touches the screen. When screen is touched I catch it with event onTouch() and cancel the pop-up. From this point I don't need the event anymore.
The problem is the event is alive and continues to jump up every time a user touches the screen.
Is there any way to unsubscribe from this event? Something like in c# -= eventName.
The code is below:
#Override
public boolean onTouch(View v, MotionEvent event) {
if (!_stopToast)
{
_hintToast.cancel();
_stopToast = true;
}
return false;
}
There's no such method (lets say removeTouchListener or similar) which will help you to remove an already defined touch listener from a view. Setting null to setOnTouchListener won't help too. What you can do is to create a new object reference of OnTouchListener class which does nothing and set it in setOnTouchListener. For example:
public final OnTouchListener dummyOnTouchListener = new OnTouchListener() {
#Override
public boolean onTouch(View v, MotionEvent rawEvent) {
return false;
}
};
And simply use it as below:
yourView.setOnTouchListener(dummyOnTouchListener);