Android : Detect Finger Going Off Screen?
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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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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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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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 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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Aug 20, 2010
is there any application to get screen off by fast finger touch?
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Apr 23, 2010
How can i make my page slide as the user slides finger on the screen in android? Any example code? I just require the same feel as it is on my android g-phone's home screen.The screen moves as the finger moves(also includes the elastic effect).
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Mar 29, 2009
I found event handler: dispatchTouchEvent(MotionEvent) works differently between G1 & emulator when finger is holding on touch screen.
I have a class inherited from RelativeLayout and override public boolean dispatchTouchEvent(MotionEvent event) method. After I touch & hold on the touch screen, in emulator I got MotionEvent.ACTION_DOWN event only. But in G1, I got MotionEvent.ACTION_DOWN first and then MotionEvent.ACTION_MOVE continuously, even if I try my best to hold still my finger tip.
I wonder if this is because there is pressure field in the MotionEvent. Because the blood pressure on finger tip changes continuously with heart beat, so no matter how still my finger is, the pressure value still changes. But I wonder if all kinds of touch screen have pressure factor in their touch event? Will all touch screen driver emit touch event continuously when finger is holding on the screen?
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Aug 23, 2010
I've noticed that I'm getting little tingling shocks to my right index finger whenever I touch the Evo's screen.What's even stranger is that I don't feel the sensation on any other fingers on either hand. Has anyone else had a similar experience with their evo screen and finger feeling little shocks?I'm not imagining this, and I'm wondering why the heck it's just my index finger?!? Maybe it's just more sensitive, but who knows.I would assume that the capacitive touchscreen technology is the culprit. I can live with the slight tingling, I just don't know why it's only on 1 finger!
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May 12, 2010
Anyone else notice when you're on a phone call if you move your finger near the little dot to the left of the verizon logo the screen will turn off? It's annoying when multitasking because that functionality remains regardless of whether the phone call is the active screen or not. If you are watching the Google Navigation screen and you're on a call, move your finger near the little dot next to the verizon logo and the screen turns off.
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Feb 8, 2010
I have got one big problem with the touch input of my Hero. The screen is too sensitive. I can navigate on the screen while my finger is about 5 cm away from it. I can choose what I want, but the screen takes the right horizontal position of my finger, but not the vertical. Anything I want to take, the screen takes the one on the bottom of the screen. The same when I want to write a message or something like this. I choose the "W" or "E", but the screen takes the "X" or "C". If the display goes on Standby and I wake it again, everything is good for a few seconds, but than the same mistake comes again. I already tried to wipe and install a new MCR, but nothing helps. I think, but I am not sure, that I have that problem after I have installed the htc keyboard on android 2.1, as I tried it for a few hours.
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Jan 10, 2010
Kind of sad, but I guess it's something we all knew deep down anyways.
Smartphone touch-screen analysis tests finger fidelity | CES 2010 - CNET
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Aug 2, 2010
I am looking for a way in which I can detect any tap on the screen (not just in my app), I don't mind not having the information of what the tap was (control/letter), just the fact that a tap was made will suffice for me for now. Is there any possible way to achieve this?
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Apr 4, 2010
As mentioned in a previous question, I am having difficulty intercepting all android.intent.action.SCREEN_ON events without a long-lived service (discouraged). I may be able to work around the need if I can simply work out when the screen is on at any given time, in the service.
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Mar 29, 2010
How can I detect the screen is on or off?
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Jul 31, 2010
I am trying to detect Screen backlight On / Off.
I've found android.intent.action.SCREEN_OFF related its event.
But I don't know how to use this.
Can you suggest me about how to detect screen backlight on / off ?
I missing some example or sample code.
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Apr 18, 2010
I recently bought a HTC Desire which I've become exceedingly fond of.I've read (and been told by a colleague who owns a HTC Legend) that wifi should automatically turn off while the screen is off to conserve battery. I have the impression that I should be able to see the wifi icon turn on as I turn on the screen and unlock the phone. However, I haven't noticed that happening: The icon seems to just be on always.I have then tried observing my router's DHCP table when the the screen is off, but I haven't observed the entry for my phone disappearing (and I don't really know how much time has to pass before the table not showing my phone.Are there any settings that can cause this behaviour? What about programs? I current use smart monitor to log data usage as well as locale (using a SSID plugin and not the locale "location" condition). The only services I can see apart from those I think are OS services, are the ones for locale, smart monitor lite and the SSID plugin.
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Sep 28, 2010
I'm writing a customized view similar to Grid which will be used to hold a large amount of images. I'm using ImageButton to display the images, and I only want to load images onto the buttons once they are on the screen (and just display a static background image when they are not). The reason for it is that I'm fetching images from some back-end service and I only want to fetch them when the buttons are on the screen.To do that, I'd like to know if the widget is on the screen. Is it possible to detect if a widget like button is on/off screen? If not, any suggestions on how to achieve what I'm trying to do?
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Mar 19, 2009
How do I get the current screen resolution (width and height)?
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Jul 27, 2010
I've got an onTouchEvent boolean on a Surfaceview, I've got openGL objects drawn on the view and I'm wondering is there anyway to detect where on the screen the onTouch happened? e.g (x,y) co-ordinates.
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Nov 27, 2009
Is there any way where I can detect that the screen is about to turn off, so I can do some work *before* it happens?I need this to work around bug 3755: OpenGL apps sometimes crash when the screen gets turned off because they don't get surfaceDestroyed /surfaceCreated() events. Simply put, I need to shut down OpenGL before the phone has a chance to detach the GPU. The only events I seems to be getting when the screen turns off are onPause() and onWindowFocusChanged both of which turn up *after* the GPU detaches, by which time it's too late.
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Jan 14, 2010
I've checked the WallpaperService.Engine class and don't see anything.What's the best practice for detecting home screen sliding?
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Aug 26, 2010
I have an application that has many screens. Is it possible to detect if the screen NOT belonging to the application (not defined in my android manifest) comes into visibility?
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May 9, 2010
I'm currently implementing a live wallpaper. This is also visible, when the device is locked. Now I want to show different content, when it is locked but can't find a way to detect this. PowerManager can only change the settings and the wallpaperEngine only gives me a general onVisibiltyChanged() method, which triggers every time you return to the home screen.Dos anybody know a way to detect if the device is locked?
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Feb 15, 2010
Is there a way, some API one can call to detect if the user has set a screen unlock pattern or not?
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Aug 20, 2009
Is there any way for a backfround task to programmatically detect or recognize by learned id which application or screen (different package) is showing?
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Jun 3, 2009
I need to set different content view after rotating device screen. Is there any method to detect the direction of current screen is vertical or horizontal?
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Aug 10, 2010
Is there a way to detect when a user unlocks the phone? I know about ACTION_SCREEN_ON and ACTION_SCREEN_OFF, but these seem to be fired when the screen switches on/off on pressing the power button, but not actually when the phone gets unlocked on pressing the Menu button...
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Oct 20, 2010
In Javascript/jQuery, how can I detect if the client device has a mouse?
I've got a site that slides up a little info panel when the user hovers their mouse over an item. I'm using jQuery.hoverIntent to detect the hover, but this obviously doesn't work on touchscreen devices like iPhone/iPad/Android. So on those devices I'd like to revert to tap to show the info panel.
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