Android : Dispatch TouchEvent Works Differently When Finger Hold On Screen?
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 31, 2010
I installed Froyo 2.2 and now on the home page when I press the "search" button it only searches internet. On 2.1 this would search my phone, calendar, contacts.... as well as suggestions for internet. Anyway to turn this feature back on? Somethnig must have gotten reset.
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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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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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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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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 10, 2010
I recently got 10.1 Flash on my Droid, I tried playing some Flash Games, but the ones that use the mouse I have to use the touchscreen, and when I move it around, it moves around the entire screen as well.Is there an app for the Droid or a built-in feature that will hold the browsers screen in place, so that it won't move around?
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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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Aug 11, 2010
Is there any way to put hold music on for the person you put on hold when answering another call?
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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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Sep 10, 2009
I have just recently setup my android environment on eclipse. I am having the following error when I try to run my helloworld program. Here is the error...
Unable to connect to activity manager; is the system running? solve this?
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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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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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Feb 3, 2009
Does anybody have any idea why I get often(but not always) error during the on touch event? Handling touch events is freezed for few seconds(this appears only immediately after application start). Then Error screen appears (choose wait of close). When I choose wait after few seconds screen is starting to process events. I'm using surfaceView with thread for painting. In logcat I get something like : "No window to dispatch pointer action 1".
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Aug 22, 2009
Is it possible to create and dispatch custom events in android? The only examples i have seen extend existing events. I want to be able to dispatch an event anywhere that I deem necessary.
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Jul 4, 2009
http://code.google.com/p/fixxit/
I had an idea to use Android in the public space to report public works and other problems that need repairs. Android provides a great tool to document and locate problems. Google APIs like Maps and Appengine can link these reports to help direct efforts to make the public space a better place to live. Unfortunately I'm a Java rookie and so lack the skills to even start the coding at this point. How to get this open source application started.
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May 2, 2010
When your on the home screen and hold down the Menu button it doesn't open the keyboard.
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Aug 7, 2010
On the iPhone, when you hold down the top button and the button on the bottom it takes a snap shot of your screen, I love that feature. Does the droid have it?
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Sep 11, 2010
I bought a new droid for $20 haha lucky i think until i notice that the touch screen only works for the middle of the screen to the left so if yu cut the screen into thirds only the middle and left work assuming that yu cut it from top to bottom with the lights at the bottom for the home button etc. I opened it up cleaned all the flex cable with alcohol and waited for it to dry and it still does the same thing so my question is = do i need a new digitizer or is it a software problem or something that i dont even know?
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Sep 26, 2010
We have an application that runs fine on my Samsung Moment but crashes on load on my HTC Hero, both running 2.1. I thought Android was Android.
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Jun 1, 2009
I am using OpenGL ES and drawing a triangle strip with 4 vertices. The texture I'm drawing was loaded from a PNG using BitmapFactory.decodeStream. I'm confused as to why my images look so bad. I took a screenshot and made the following image, which shows the on-device rendering on top and the actual image on bottom:
http://n4te.com/temp/imgDiff.png
Any idea why there is a difference? I have tried a bunch of different settings but I can't keep it from looking bad.
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Apr 25, 2009
I have a lot of Views where I have set a background image on the top LinearLayout and then I have nested a new linear layout below with a background that is semi-transparent. This works great in 1.1, but in 1.5 the transparency is just disregarded and this breaks my app as the text on top is now unreadable.
Is this a bug or a feature? Is there a better way of doing this? Very grateful for any tips!
Code example:
CODE:....................
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Nov 12, 2010
So I would like for my Google Voice number to ring differently than my regular carrier number. I give out the GV number for business use and my regular one for personal/friend use.
So does anyone know if it's possible to have a separate ringtone? I see under the GV settings area "Sync and notfications - Select Ringtone" but it doesn't appear to work when I call the number. Any ideas?
(I'm on android 2.1 if that matters.)
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Aug 14, 2010
Did anyone encounter this problem? Particularly, I have a dialog style themes for a few activities and these come up as expected on the emulator, but are full screen on the device. The theme I a using is actually an extension of the basic dialog theme (Theme.Dialog). I did not check with the original one.
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Jul 4, 2010
This questions comes as my team is about to under-go development for a mobile app targeting iphone, android and qt. We aim to complete the iphone version first, and then port to android and qt, and it would be great to know any tips or ideologies to grasp/employ from the outset, that would make the porting process as seamless as possible.
I'm sure there a few of you who have completed their iphone version of an app first, and then gone about developing an android version. I am keen to know any of the hurdles that you encountered, or things you wish you knew from the start.
More specifically, the app we are making will contain forms and some visuals(charts)
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Mar 15, 2010
The Eclipse build for my 1.6 application project is succeeding and the Ant build is failing. I'm looking for help on why they aren't behaving the same way.
We are developing on Mac OSX 10.5.8 with Eclipse 3.5 against SDK 1.6 + Google APIs. There are no setting changes in Eclipse, either at workspace or project level. Similarly, our ant is also a vanilla- flavored unmodified installation of 1.7.1. JDK is 1.5.0_22. The CLASSPATH environment variable is not set. JAVA_HOME is /Library/Java/ Home
The application was initially created by a team member using the Eclipse plugins. The application references two jar files, one of which has a dependency on javax.xml.bind.annotation.XmlSeeAlso, which is not defined anywhere in our code or in android.jar. The other jar file has an explicit dependency on android.jar. I generated the Ant build file using android update.
The Eclipse project builds an apk and runs the application in the emulator. I think this is incorrect behavior.
The Android project fails to build. I think this is correct behavior. MyClass.java:98: cannot access javax.xml.bind.annotation.XmlSeeAlso[javac] file javax/xml/bind/annotation/XmlSeeAlso.class not found
Any ideas as to why the two build methods are behaving differently? I would expect them both to fail.
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Aug 25, 2010
I'm a little confused toward this one. People seem to have really varied reports about certain kernels and ROMs and whatnot working on their phones. For some, King's #1-3 are either really stable or completely unusable. Same goes for the Hydra kernels, or Skyraider, or Cyanogen.
But I don't get WHY this is the case. Take two Incredibles off of the HTC line and somehow they react differently to the same pieces of software. How's that work?
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Oct 17, 2010
For my site I need to be able to tell the difference between when an Android tablet visits and when an Android phone visits. It needs to be detected before the page is sent to the user so using JavaScript to check the screen res isn't an option.At the moment I use this to detect an android device: stripos($ua,'android')Is there anything unique thar a tablet has in it's user agent?
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