Android :: Calculating Map Routes On Droid?
Sep 7, 2009
I am trying to calculate a route based based on either geographic location or address. I figured the obvious way would be to use some part of the built-in Google Maps package, but it proved harder than assumed. There used to be a package called com.google.googlenav, but from that disappeared with the 1.0 release of the Android SDK.
I know that Google Maps has a public JavaScript API, but since the application is developed for the Android (in Java) and I would like to have an offline alternative, is there any other library packages, built-in or 3rd party, that I can use to achieve this?
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Aug 2, 2009
I'm looking for a way to get routes for jogging/running on the intertubes, and save these to my android, allowing it to guide me through them. I like a dutch site which finds local routes and displays them on a google map(see example here). It has some ways to save these routes, including a .gpx file download, a Garmin file download and a (limited) Tomtom file download. Is there any way for me to save a route like this to my own google map, so I can acces it on my phone(HTC Magic/Mytouch 3G)?
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Sep 17, 2010
I'm trying to create a compass for my application BUT the difference is that, instead of having a line always pointing to north, I want this line to point for a specific point. I've been trying dozens of algorithms and nothing works. I've finally found one that points me exactlly to the point I want. But it doesn't move if I change the position of the device which is my objective. Basically, what I want is that no matter the direction I'm using my device. The line always point me to the point (picLatitude,picLongitude). I understood that for the line to move, I can't use static variables. I need to use the values offered by the onSensorChanged(SensorEvent event). This are the data I have available:
event.values[0]: azimuth, rotation around the Z axis (device in relation to north, 0º) event.values[1]: pitch, rotation around the X axis event.values[2]: roll, rotation around the Y axis mLatitude: device current latitude got from GPS (variable) mLongitude: device current longitude got from GPS (variable) picLatitude: static picture latitude established previously picLongitude: static picture longitude established previously distance: distance in Km from device to the picture calculated previously
And this the formula that works correct, and gives me the correct angle. (But it doesn't use any of the Sensor Data so the line Compass doesn't move):
double dLong = picLongitude - mLongitude; double y = (Math.sin(dLong) *
Math.cos(picLatitude)); double x = (Math.cos(mLatitude) * Math.sin(picLatitude) - Math.sin(mLatitude)*Math.cos(picLatitude)*Math.cos(dLong)); double angleDegreesWrongRange = Math.abs(Math.toDegrees(Math.atan2(y, x))); float angleDegrees = (float) ((angleDegreesWrongRange+360) % 360);
myCompass.updateDirection(angleDegrees);
I got this "bearing" formula from this website: http://www.movable-type.co.uk/scripts/latlong.html. I've try adding, subtracting, the azimuth.. I've tried with the others, seriously at this point I'm just demoralized.
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Oct 18, 2010
I have latitude and longitude of two places. Can i calculate the distance between them in android?
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May 4, 2009
How can I get/calculate current process CPU usage? ActivityManager provides method that returns a list of all active processes (list of RunningAppProcessInfo), but that class doesn't provide any CPU usage information.
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Jan 20, 2009
Is it possible to get google maps to find directions for local bus routes? I know my local bus organization uses google for bus directions, and I can access it through the browser, but I'm wondering if there's a way to do it through the Maps application.
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Jun 14, 2010
I am streaming an rtsp video to Android. How could I calculate network metrics like packet loss, jitter or delay?
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May 25, 2010
firstly apologies if this has already been answered but i couldnt find anything: i have a couple of questions about the google maps navigation:
1) how do you enable voice activation so you can search by voice rather than typing stuff in?
2) how on earth do you modify routes so that you can avoid motorways for example? i cant find any way to drag points on the map in the same way you can on the normal PC version of maps?
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Jul 14, 2010
Seeing as Motorola is locking down the Motorola Droid X and likely the Droid 2, what should I replace my Moto Droid with? I've been totally happy with the phone to the extent that I tell people it's the coolest thing I've ever owned in my entire life... that's 51 years for you youngsters. I'm of course on Verizon and will stay with Verizon. I've paid zero attention to any phones other than the Moto Droids. Alas, lockdown is not acceptable. So now I have to go through the whole learning process all over again.
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Sep 7, 2010
Just out of curiousity why is skype on those droid phones but not the Evo? I also noticed swype the kb everyone talks about but Evo users have to practically tweak and hack to get swype to work on their phones.
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Aug 4, 2010
Comparison: DROID vs. DROID 2 vs. DROID X vs. Incredible | Droid Life: A Droid Community Blog
Droid X only with 256 RAM? Is this a typo? According to several review sites the X has 512 RAM.
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Aug 16, 2010
I'm upgrading from my Droid 1 to the Droid X tomorrow and would like to start my use of the DX with it's new 32gb card in place of my old 16gb card from my Droid 1 but need to know if there's anything required to copy from my droid 1 16gb card to my new DX 32 gb card that would be required or helpful in the DX use.I will obviously transfer music/vids/pics but are there any essential files, apps, etc. that are needed.Or is it a good idea to use my paid MyBackupPro to copy the old Droid 1 apps/data for use in the DX larger memory card or is this not copatible to perform between the 2 devices?
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Sep 2, 2010
I have a Motorola Droid and the latest release of Android (Froyo 2.2).My question is I want to send a music video that is going to a Non-Android phone. This phone can play videos and is a standard Verizon branded phone. The video has already been converted to the standard .3gp format from my PC which uses Roxio 2010 Video converter. I have the following Apps installed to assist me:Astro File Manager (With both extensions installed and latest release)Handcent SMS (No Font Packs Installed).The video itself is almost 4 minutes long and the size of the video is only 9.40MB.
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Dec 14, 2009
Just trying to get bearing on this project Im working on for Android / Droid devices.
Im about ready to release a beta test for a printing utility in a week or two and was wondering if a Bluetooth printing utility would interest anyone.
Basically it will print from various standard PIM applications on the device printing Text and Graphics on Full-Size HP-PCL compatible printers as well Small Format ESC/POS mobile printers.
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Jul 24, 2010
When I try to enable it in the settings is says Wi-Fi and "Error" below it. Could it be a bug in the ROM? In phone information the Wi-fi MAC address in unavailable.
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Aug 22, 2010
I have the original droid with 2.1 (still haven't got update) the phone has some problems like, restarting, cant update certain apps, unresponsive. i just got the phone in may 2010 an im starting to think its getting out dated. I once had it rooted to 2.2 but went back to stock for OTA 2.2 . But my question is, that do u think i can call verizon and tell them my problems, say its my 3rd droid and im getting tired of it. Since there not making the oringinal droid anymore do u think they'll let me upgrade to Droid X with little or no fee? i got the idea from another post, reading that someone had success with this trick?
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Nov 2, 2010
What types of the changes i have to do if i m going to make app for android tablets from existing app of android mob??
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Sep 29, 2010
I have CM6, but I hear the new UD 8.0 is quick and snappy. This is something I want, but don't have on CM6. Should I switch over to US 8.0?
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Nov 18, 2009
I'm considering taking my droid back for an eris. I just wanted to see how may ppl have switched and if they're happy they did
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Nov 15, 2009
I'm Sure it can be done, but how...?
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Nov 26, 2010
Jus a little background: I have a launch day Moto Droid. Still love it, but it does have some lag issues that are becoming increasingly annoying. I think the issues are caused by either the fact that I'm rooted running one of the first Froyo releases, the fact that the Swype keyboard isn't really meant for this phone, the dropping of the phone (which also cracked the screen, though that doesn't bother me) or some combination of the above. Regardless of the cause, I'm ready for a new phone.
I've been out of the loop, but since I started back in, I've noticed that Gingerbread is on the verge of being released and one of my biggest concerns is buying a new phone that's already outdated. Whatever phone I get, I want it to be able to handle Gingerbread with no problems.
I'm leaning towards the Droid 2, because I like having a qwerty keyboard plus Swype. Will the Droid 2 be OK with gingerbread? Or, should I wait until phones are released that were designed with gingerbread in mind? How lon 'til such phones will be released?
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Dec 14, 2009
Seems as if someone at sholes.info has successfully greated an image for android 2.1 that works on the droid. They mention that some things may not work properly (system permissions) and that they recommend not to do this until they create a fully functional "proper" image. Anyway, good news for us Droid users. ROOT required, and risky but still good news nonetheless.
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Apr 27, 2010
I am trying develop an application which shows user current location. To find user's current location i am using following code...
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Jun 25, 2010
So "stock" Froyo 2.2 was released this week right after the Droid X announcement...
Is the Android OS on the original Motorola Droid stock OS? I know that Droid X is going to have Moto/Ninjablur, the Incredible has Sense UI etc. Could you consider the Droid OS "stock" or is only the Nexus One?
A friend keeps arguing that Droid's isn't since they haven't customized the kernel etc for the specific hardware.
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Jun 28, 2010
Have you seen this? I wonder if this will actually come true:
Motorola Droid X May Already Be Replacing HTC Droid Incredible
According to an unconfirmed report, Verizon is now allowing customers who are getting impatient waiting for their Droid Incredible to be delivered to switch their pre-order to a Droid X.
After the Motorola model launches, the HTC one is supposedly going to be discontinued.
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Sep 7, 2010
I dont know if this should be in the Accessories or not but here we go.Like some people I orginally had the Droid 1 and Verizon upgraded me to the Droid 2 for a warranty replacement. The multimedia station works great but as everyone knows the car mount does not work. Does anyone know if there is a way to modify the Droid 1 car mount to work with the Droid 2 or if there is a way to buy just the new "face plate" on the car mount for the Droid 2 since they do look similar and it appears that they are the same car mount with just a different "face plate" that attaches to the phone.
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Nov 21, 2010
I currently have a rooted Droid 1 and it runs just fine at 1.2 ghz with Bugless Beast.However, I am starting to get anxious for a new phone and my upgrade will be ready in early December.I have been doing a little research and have not found anything that seems to be miles ahead of the droid x in the near future. I want the best phone on the market and as of right now I feel that is the droid x (sorry iphone). Would you guys say it is worth it to use my upgrade now and get the X or does anyone have an estimate as to when the next big thing will be coming? (I prefer a droid phone however the rumors of samsung's 2 ghz phone seem promising).
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Aug 30, 2010
I have a Droid X and today is my last day of the 30 day guarantee and I was thanking about switching to the Droid 2. I take a lot of photos of cars and videos of racing and things like that, so how does the camera in the Droid 2 compare to the Droid X. Can some post pics. Thanks. Oh and I don't use hdmi out or at least I haven't yet.
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Aug 14, 2010
Anyone have insight or expierence with the battery life on the Droid 2 compared to the original droid?
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