Android : Missing Action_Up / Detect Lifting Finger From View
Nov 4, 2010
I've got a view where I override onTouchEvent to detect touching the view with a finger and also to detect lifting the finger from the view. I'm getting the ACTION_DOWN event but not the ACTION_UP event. In fact, onTouchEvent isn't getting called when I life my finger. Could it be that the finger-down and then finger-up is considered a click event and so onTouchEvent is not called? If so, what use is ACTION_UP?
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Jan 3, 2010
I have a motion listener to detect finger down, finger drag, and finger up. I start my action at finger down and finish my action at finger up. When the action is finished, I store it in a stack for allowing undo. My problem is that if I don't get a finger up event, I can't finish my action to add it to the stack for undo.
How can I detect that the user's finger has left the screen?
I tried using the emulator to see if getEdgeFlags() ever returned anything useful, and the result was always 0.
Basically, if a finger leaves the screen, then nothing is touching the screen anymore and I would like to detect that as a finger up event. How can I do this?
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Nov 18, 2010
I've an ImageView in a LinearLayout, how can I detect when user drag his finger from any place in the screen to inside of ImageView?
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Oct 23, 2010
My EVO 4G will freak out when I am texting. Its like the cursor just goes to doodah land. Its gone completely. I am sure others are frustrated by this symptom. Its my only real bitch about this phone. Am I fat fingering the up arrow ? If so it wont come back down. Anybody else having this issue ?
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Aug 6, 2010
I would like to get access to the area covered by a finger for each touch event on an Android.Every touch event will result in a coordinate pair X and Y independent of how big the finger and consequently the touch area is that triggered the event. I was wondering if there is a way to get the area data which triggered the touch event e.g. size or coordinates NOT
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Feb 15, 2010
How can you detect that a user swiped his finger in some direction over a web page with JavaScript?
I was wondering if there was one solution that would work for websites on both the iPhone and an Android phone.
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Nov 19, 2010
I'm adding 5 ImageView to an linear layout at runtime, so far so good, but what i would like to do is, when the user slide his finger over one of them, i would like to change the image, so my question would be, how can i know what's the current imageview under the user finger.?
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Jul 20, 2010
I haven't spend much time on Gesture Detector or anything of that sort.
My requirement is very simple, Given a View (any view), how do I detect triple tap on that?
Of course a timer and a counter can help me, but I am looking for something more sophisticated that that.
For people, you are wondering, why I need triple tap, I am introducing a hack screen in an application (which I am porting from IPhone and IPhone does it that way, so I have to do it.
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Apr 14, 2010
I'm trying to have a View sensitive to double taps on an Android. So far, I learned to set up the double tap and know what place to handle the event for action code...
But How do I link it to the View? This is in a class that has a few View members.
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Jan 26, 2010
I am developing an application which requires cancellation survey when user tries to deactivate application service. Cancellation survey i am using the third party survey software http://wufoo.com/gallery/templates/surveys/cancellation-survey/. I am able to render the survey (third party html) web view in my activity.When ever the user presses submit button on WebView, activity need to store the status of survey(like user successfully submitted or not). Is there any way to detect the event from web view?
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Apr 9, 2010
I am having trouble getting my activity to generate a MotionEvent.ACTION_UP. Probably a beginner's error.
In LogCat, I'm only seeing the ACTION_MOVE event (which is an int value of 3). I also see the X/Y coordinates. No ACTION_DOWN and no ACTION_UP.
I looked everywhere for a solution. I found one question on a forum that seems to be the same as my issue, but no solution is proposed: http://groups.google.com/group/android-developers/browse_thread/thread/9a9c23e40f02c134/bf12b89561f204ad?lnk=gst&q=ACTION_UP#bf12b89561f204ad
Here's my code:
CODE:..........................
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Jul 19, 2010
Anyone else have their HTC Desire back button getting damaged. The metal appears to be lifting and getting damaged. Tried to push it down so it does not catch on anything, but it does not seem to help. Its always in a case and has no damage........on the phone to HTC support at the moment and sent them picks. Waiting on a reply at the moment.
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Jan 10, 2010
I want to detect when a user taps anywhere in a view in my Android application. My code looks like this:
linearLayout = (LinearLayout) findViewById(R.id.linearLayout); // main layout
// ...
linearLayout.setOnTouchListener(this);
// ...
public boolean onTouch(View v, MotionEvent event) {
Toast.makeText(this, "Touch!", 1000);
if (event.getAction() == MotionEvent.ACTION_DOWN) {
Toast.makeText(this, "Down!", 1000);
return true;
}
return false;
}
but when I click on the view, I don't get Toast! Do touch events work in the emulator -- or have I got something wrong in my code?
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Aug 23, 2009
My Application need to perform a database search when the user change the text in an EditText view. I need a method like onChange to allow me to know when the text in the EditText changed. How can I detect a change in the EditText view?
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Feb 18, 2010
I have an array list of a view in my application. The view has both single click and long click listeners. To detect a particular view that is selected I'm using isPressed() for single click listener. Now how can I detect that a particular view is longclicked from the array list of view?
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Jun 30, 2010
I want to do some cleanup in a view when the activity is being destroyed. Is there any way to get a callback in the View when the activity is being destroyed? I tried using onDetachedFromWindow, but I'm not sure whether it is correct thing to do.
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Jun 20, 2010
In one of my Activities I have a ListView that displays a list of locations. For each list item I want a little arrow icon that points in the direction of the corresponding location. I implemented this icon by extending ImageView. This custom View has a listener that reacts to changes of the device's orientation by rotating the icon image accordingly. I register the listener in the onAttachedToWindow() method and unregister it in onDetachedFromWindow(). This kind of works but the problem is that onDetachedFromWindow() sometimes gets called only a long time after the containing Activity has paused. Also, the whole layout overall seems a little hacky. So my question is: Is there a proper way to unregister the listeners or would you implement this in a completely different way to begin with?
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Jul 15, 2010
I have a list and i want to check is the view is returned so i can call loadingAnimation.start() to make a imageview insite listview animate
Let me tell you what i mean.. code...
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Jan 20, 2010
I have an activity defined as:
CODE:...................
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Dec 15, 2009
I'm using Companion Link to sync my Outlook with Gmail and thus to my Eris. So far it works flawlessly. All my calendar events show up, all details and notes included. The one weird problem I'm having is that while all of my calendar events show up in Outlook, and in the Gmail calendar, AND on the Eris calendar in either Month View (it shows the notch indicating an event that day) or in Day View (all events are correctly displayed) but --- if I switch to Agenda View, most of my events are NOT displayed. All Day events are all displayed as a few "timed events", but most timed events are not. Can't figure it out. I know the data is there. It is correctly displayed in every place and in every way EXCEPT Agenda View.
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Jun 5, 2010
I see in all of the videos that they use their index finger but that just seems so awkward, so I use my thumbs. Has everyone just gotten used to using their index finger or do you use your thumbs as well?
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Nov 17, 2010
I understand calling onTouchEvent from views to get the location of the last touch as a motion event. How the heck can I tell that a figure is down on the screen and has not been lifted and when the finger is lifted?
For instance there is onKeyDown and onKeyUp for use when you are dealing with keyboard input. So how can I find out when on fingureUp happens?
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Apr 15, 2010
I can't find a tutorial on Google for my problem. I'm french and i don't find the best "google keywords" for to describe my goal. I decided to ask the question here.
I want to do an animation between views like on the Home or on the Calendar in week mode. I want the switch between the views follows the finger. As I have not released the pressure, I see a part of the current view an a part of the next view.
Currently, I use a AnimatorView and 2 gestures. But the change happens when the pressure is released, and it's not good.
Can someone explain to me how to do or where to find a tutorial that explain? ps : please, don't laugh about my english, it's worst when I speak with my very french accent :P
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Jun 22, 2009
How do you detect a horizontal or vertical finger swipe?
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Nov 11, 2009
I was checking the possibility to allow painting on the screen of a surface (i.e. API demo Fingerpainting example), however when I checked it, this technic apparently only allows painting with the tip of your finger, if you try to use any other object (pencil, thick pen, etc.) it does not draw anything on the surface. Am I missing something here? Is there a way to allow other objects to draw things on a surface? Is this achievable and how should I proceed?
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Apr 2, 2010
I'm working on a soundboard, however I've got a problem when it come to drag the finger over the screen to play the sounds for the buttons I drag the finger over.Do anyone know how I can detect when a finger enter a button and not click the button?
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Aug 11, 2010
As a webapp, not a native app on the iPhone or Andriod. Is it possible to draw with your finger? If so, how?Anyone have or can provide a barebone simple example that just loads a blank page?
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Jun 19, 2009
I have a ListView. When I click a row Item (which are just TextView instances) I want them to remain hilighted (default orange color). The default behavior is that they flash orange.
Strangely, if I use the key pad (arrow up/down) to move between items, it has the exact behavior I want. Why is the logic different between using the keypad or with finger tapping?
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Aug 20, 2010
is there any application to get screen off by fast finger touch?
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Feb 7, 2009
How can I make the ListView immediately stop scrolling on a finger down event? It keeps scrolling if I give it a big swipe and doesn't stop immediately if my finger is pressed down again. Any idea?
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