Android :: Accuracy Of Location.getAccuracy() GSM And GPS - Exact Meaning?
Jun 16, 2010
As said in the Android Reference, the method getAccuracy() of android.location: "Returns the accuracy of the fix in meters. If hasAccuracy() is false, 0.0 is returned." But what does that mean exactly? The diameter or the radius? The Circular Error Probable (CEP), the 95-percentile or something else? I hope they are of the same type in GPS and GSM positioning. Does somebody know where these information are given into the system? As far as i know, are the GSM coordinates returned by a hidden Google API over a Web Service. So no chance to see an exact calculation. But where is the Accuracy of GPS calculated. I thought the GPS receiver only returns a dimensionless DOP value. And with Android 1.5 its not posible to read the NMEA sentences directly.
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Aug 26, 2012
I can't figure what is exactly meaning the Partition Sdcard values in CWM.
I have an i9000, with 8Gb of flash. Some are system reserved. Available is around 6Gb.
When i run CWM, i can partition my sdcard, but i don't see what means the possible values (for 256 to 4096).
This is obviously not ruling the space left on /sdcard mountpoint (i partition to 2048, i still have nearly 6Gb available)... So what exactly means partition sdcard from CWM ??
i can't find an answer, and i dislike, when flashing rom, following commands i don't really master (generally a partition SD 2048 / SWAP 256 or SWAP 0).
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Jan 23, 2010
I know that it's mostly "approximate". But, I must know the EXACT location of the phone, regardless of battery life or whatever.I need the exact location of the phone! Is it possible?
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Feb 15, 2010
wanted to know that the accuracy value returned by the getAccuracy() is of which type radial accuracy or horizontal accuracy.
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Nov 6, 2009
If I do Location.getAccuracy() I get a number of meters. Is that number a radius or a diameter? I thought it would be a radius, but Google's MyLocationOverlay uses that value as a diameter.
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Jan 19, 2010
how does "location accuracy" use a wifi network?
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Jan 12, 2010
Super happy with the Nexus One just minor issue is that on occasion - and not sure what triggers it - but the touch location seems to end being below where i actually touch on the screen, which of course causes erratic typing and erroneous screen clicks. A quick cycle of the sleep/power button (not turning unit off, just sleep/blank and back on.) seems to solve the problem.Hopefully an update will resolve this issue, as it seems to be a software issue.
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Dec 10, 2009
Anyone have an accuracy issue? I just opened it for the first time and it shows my location as a good 1/4 mile away. Of course it does state accurate to 1400 meters.
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Aug 2, 2010
Has anyone noticed the differences in using the two maps in terms of location accuracy? Specifically with GPS off. I don't expect either app to be extremely accurate in finding my location with GPS off, but what's odd is that Google Maps put's me about .25 miles WNW of my actual location while AT&T Maps put's my location .25 ENE of my actual location. You would think that the operating system determines the location and provides the app of that information, but that doesn't seem to be the case (since the two maps are showing different locations).
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Apr 23, 2014
Phone settings: Location : Battery Saving (GPS off, using Wifi/network location only)
On Google Play Services 4.0.x - I get very accurate location small circle around where my house is.
After updating to 4.2.25 - I get a large circle - maybe the radius of an entire block / surface area of a cell tower coverage roughly
Uninstall the update to play services (back to 4.0.x) - get very accurate location again.
I am using a RAZR HD with 4.4.2 kit kat / CM11.
Did play services update broke my specific phone?
I would stay on the older Play Services but Hangouts and Maps keep bitching about needing to update it.
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Jun 16, 2010
Does anyone know the proper interpretation of the accuracy measurements returned by getAccuracy()? For instance, are they calculated as:Circular Error Probability (meaning, if i understand correctly, radius of a 50% confidence circle)? Radius of 95% confidence circle? something else? In addition, what are the actual calculations that are used and how much can we rely on them? Does it depend on the source of the location estimate (GPS vs. network)?
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Oct 19, 2009
Just a question for fellow users, how accurate is your GPS on your HERO? I turn on Google Maps and "my location" is hardly ever accurate.
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Feb 26, 2009
In my logcat following messages, anybody clear me what is meaning of thismesg ........
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Aug 25, 2009
I wanted to understand what the $ sign and the number after a $ sign meant in a backtrace. For example, consider the following backtrace: at android.app.Activity Thread.access$ 2500 (ActivityThread.java:115) at android.app.Activity Thread$H.handleMessage (ActivityThread . java : 1745) In the first line, what does the number 2500 refer to? In addition, I couldn't find the function "access" in ActivityThread.java, and line 115 is just the beginning of the class. Can anyone help clarify this?
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Feb 21, 2009
How do I know in the Order Inbox which items were charged properly? Where can I find what the symbols mean under the Charge column? Is a "-" a successful charge, or a "O"?
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Sep 20, 2010
In android, most event listener methods return a boolean value. What is that true/false value mean ? what will it result in to the subsequence events ?class MyTouchListener implements OnTouchListener {@Override public boolean onTouch(View v, MotionEvent event) {logView.showEvent(event);return true;}Regarding to the above example, if return true in onTouch method,I found every touch event(DOWN,UP,MOVE,etc) has been captured according to my logView. On the contrary,if return false, onely the DOWN event been captured. So it's seemd that return false will prevent the event to propagate. Am I correct ?Furthermore, in a OnGestureListener, many methods have to return a boolean value too. Do they have the same meaning ?
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Nov 18, 2010
It looks like the naming style for android attributes varies between underscore and camel case. Does the variation mean anything, or is it arbitrary? edit: examples would be layout_width and columnWidth.
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Nov 20, 2010
I tried enough to find in google & android this question. Also did several trials & errors, but couldn't get this question. was learning Android's "Draw Nine Patch" images. One basic I know is that, whatever image you process must be in .png format (if it's already in .9.png then it will be ignored by tool). However, couldn't understand what it literally means by "stretchable patches" ? what exactly happens when you draw black dots outside the .png image ? (preview pane shows changes happening, but I am unclear on how it makes those)When I draw black dots in left/top sides of image it shows some changes in preview; but why isn't there any effect when you do the same on right/bottom side of the image ? why this tool is used primarily for background, when we try to process on the image itself ?i am trying to modify a simple button.png (given in android sdk). Whenever I use this tool & draw black lines, it reduces the size of the image instead of 'stretching' it! Why ?What is the significance of options given below like, "show lock", "show content", "Patch scale" and so on ?I apologize for asking so many questions, but in Android online docs they haven't explained well for novice. If someone can answer these, it will become ready reference for all the begineers who search this forum.
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Sep 7, 2010
What the "ear" symbol is in the notification bar and how I managed to turn it on? It displays regardless of whether my volume is high or off or on vibrate.
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Jan 11, 2013
Today I take a look under the battery for imei and i found under my model number another one look ic: GTS7562l . I what to know what is this number .
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Jun 1, 2010
What does a small white triangle above my signal strength bars indicate on my Inc phone status area of the menu bar? I don't get an "R" which I know means roaming nor an "X" which means no signal, but is in the same location.
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Sep 20, 2010
I have a background image (full screen) and want to create an exact layout, which fits this background-image. The buttons and labels have to be at an exact place of the background-image. How can I do this? The absolute-layout is deprecated. If I use relative layout, I can use margins, but the positions differ from device to device. The best thing is if I could set the exact positions as percent of the total view size. How can I do this?
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Sep 2, 2009
I was hoping someone could give me instructions to obtain the *exact *source code for the current SDK. What I have so far is as discussed here; http://androidforums.com/android-developers/1045-source-code-android- By using commands such as; repo init -u git://android . git . kernel .org/platform/manifest.git -b android-sdk-1.5_r3 jar cvf ../android-src.jar -C core/java . etc. my issue is that the source is still inconsistent, some extra methods are available and some are not. For example, I want to make a progress bar with two sliders (To select a range) but the version of Progress bar I have; http:// android .git.kernel.org/?=platform/frameworks /base.git;a=blob ;.http://android .git.kernel .org/?p=platform/ frameworks /base.git;a=blob;> I cannot mimic (as an initial implementation), despite using the same package and extending View I do not have access to 'mMinWidth' for example. In addition the progress bar uses methods of the class StateList Drawable which are not available in this SDK (e.g. getStateSet(int i)). It's obvious that there's an inconsistency between the source I have and that which was compiled into the android SDK but I don't know why given my GIT repo commands. Can someone link to the version of ProgressBar which was shipped with android-sdk-1.5_r3? Has anyone managed to get the branch which maps directly to this release? This might well be due my inexperience with Git, please let me know if anyone has this set up correctly and I will try again. I seem, in all honesty, to have the head revision still.
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Nov 4, 2010
today's update is for all nordic generic right? so what's the meaning of generic in my software info in my phone?my country is Indonesia. so i think the meaning of generic is when the update for generic is coming so my phone also can be updated right? can anyone explain to me? Sony Ericsson Answer Team?
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Jul 2, 2010
So, just reading around the forums and online sites, I guess Android 3.0 or gingerbread might be out around the holidays.Although the vibrant does meet the minimum requirements, google seems to want 3.0 only to run on superphones. If 1ghz, 4 inch screen, and 512 are min requirements.. This leads me to believe, that by the holidays, this phone will no longer be considered a superphone, there probably will be a 2 ghz. 4.3 inch, 1gb phone out. Why do I bring this up? Well I'm asking because, for those people who do not wish to root, and are depending on t-mobile/samsung updates to 3.0, what if samsung never releases a 3.0 update for the vibrant. This is the only reason I'm thinking about this phone.Just reading various sights, seems like google has made it clear, gingerbread 3.0 will be for superphones, and all other phones will stick to 2.2/2.1. I'm thinking by holiday season, samsung is going to put this phone in the "I'm sorry, you are stuck with 2.1/2.2 cateogry" because they probably will have a superphone out by then.If you can't get 3.0 on this phone via a true update, is it worth it? How can anyone find out, what Samsung has planned?I guess I don't want the behold II issue to happen on this phone.
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Sep 14, 2010
Surely, this can't be allowed, can it? What recourse do I have?
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Sep 18, 2010
Is there an app where you can hold the Droid to a sound and it talls you the exact pitch in Hertz? Whether I sing to it or dog whistle to it or play piccolo to it or play a digital sound from my computer onto it?
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May 19, 2010
How to find the exact pixel center of a String? I need this for drawing onto a canvas.
float ty = ((-mTextBrush.ascent() + mTextBrush.descent())/4);
Add this value to the y axis when you draw.
ie.
canvas.drawText(text, cx, cy+ty, mTextBrush);
Where cx and xy are your center points
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Oct 23, 2009
can anyone tell me any solution or tool provided by Android to find the exact place of memory leaking?
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Aug 24, 2009
can anyone from Google let us know the exact date of submission of ADC2 Applications. or Google is extending date . I m very much curious about it. please let us know.
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