Android :: Mapping Xy To Latitudelongitude
Jun 24, 2010
I'm trying to get the lat/long values, from the corners of the screen. But my getProjections don't make any sense.. I mean ... mymap.getProjection().fromPixels(0, 0) or mymap.getProjection().fromPixels(screenWidth, screenHeight) just delivers me unreal numbers..
I'm trying to set up an algorythm that would avoid cluster of graphics in the map and for that, the app needs to know which area of the screen is being showed latitude/longitude wise.
For example:
CODE:..............
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Jun 16, 2010
there im looking at gettin g a new phone, and this is really the deciding figure between a blackberry, iphone or android device. What im looking for is a gps app sorta like gpsed that can map my tracks and put photos on them, but that stores these maps on my phone not the internet. Also what i would like is to ba able to take a picture with my phone and quickly be able to attatch it to my map. So when i go to this map in zoomed out mode i can see all these tracks (possibly in different colors) and these pins which i can click on and see pics of that location.
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Feb 9, 2009
Is it possible at this time to get normal mapping to work on android? I'm asking because it would involve the use of GL_DOT3_RGB, which is in the GL11 specs, not GL10. But GL11 is indicated as not completely supported.Is there an official list of GL11 features that do not work, or is it simply unstable and I should just avoid it for now?
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Aug 26, 2009
I have a love-hate relationship with my G1, with the inability to remap keys at the top of the list. I've looked high and low for information, going so far as to try to decipher pages like this:http://www.kandroid.org /android_pdk/keymaps_keyboard_input.html and even reading the android platform code on github. I don't see things like page_up and page_down defined in the android keymappings. And I suspect that the original scancodes are being assigned to touch gestures.Since the number keys don't have a third component could an enterprising developer map to the unused caps for missing keys? Not that it would be all that useful at this point but it would give someone a hook to build on. Or if that isn't possible, how about a virtual floating task bar kind of thing (maybe mostly transparent overlay?) that maps gestures like the swipe up/swipe down and more traditional arrows and enter type keys for the trackball? This isn't entirely a nit-picky kind of request. I have a medical condition that in the winter makes my fingertips extremely painful and the trackball hurts. I'm guessing that there weren't many arthritis sufferers on the Android development team, either. You would think that the touch screen should make things easier, not harder. Even my old, old Omnigo and HP100LX had utilities to remap keys, so it seems odd that there isn't some kind of app that could be developed. I think if I had enough time (which I don't) I might be able to eventually puzzle out a crude version of the task bar thing but I'd much rather pay a couple of dollars in the market.
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Nov 25, 2009
I've tried casting shadow following this tutorial (which uses Stencil Buffer method): http://nehe.gamedev.net/data/lessons/lesson.asp?lesson=27 The result is a cool shadow effect. But it depends too much on geometry and thus not very flexible. Then I found a much easier way to do shadowing here: http://www.paulsprojects.net/tutorials/smt/smt.html But it uses ARB_depth_texture and ARB_shadow extension. So I bet it can't be used with Android's OpenGL ES 1.0. I've tried googling for "Shadow Mapping" and "OpenGL ES" but still can't find a good tutorial. Can anyone recommend me a good place/site I can study for this please?
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Aug 7, 2010
Ok so here's the deal guys and gals, I am trying to have my phone assist me with my running. There are plenty of apps that will track my run via gps if I bring my phone on the run with me, but I don't wanna do that. I want to be able to map a course out, enter how long it took me, save the map and even share it with friends. Ideally the app would have the gps running features I mentioned above just on case I ever do start bringing my phone with me. Here is an example of what I mean in website form (unfortunately they make a sweet app for the iphone but their android version is pretty awful right now.MapMyRun.com -
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Aug 16, 2010
I am looking for an application that can create a map by me carrying the phone and walking a certain path.There is a 300 acre park near where I live. The maps they provide are way off base. I would like to walk all of the trails and have the Droid record where I am walking.You know, this may be easier than I think using ASE and writing a Python script. I'll just get the location every half second and write it out to a file. It'll be interesting to see how the maps turn out, seeing the low resolution of the GPS receiver.
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Feb 2, 2010
I am writing an Android AR application and have my engine working but it contains a strange behaviour that I can't seem to get fix. I am overlaying an OpenGL surface on the camera image and am placing 3D objects in the view accordingly. If I use dummy data for the location of my AR objects, i.e. LAT 10 LON 10 become x=10 y=10 on the OpenGL surface, then the overlay works perfectly. However, if I use direct GPS coordinates for my LAT and LON (e.g. LAT 12.34567890 LON 100.23456789) then all my objects either move around their location or don't appear at all. I know there are issues around using floating points and the OpenGL framework, but I've been reading around and am still having trouble stopping this behaviour. Has anyone else had this problem? Should I be using a scaling factor between my GPS and openGL surface, if so what values are good? I tried scaling my LAT and LON by 1000000 to eliminate the floating point, but it didn't help and the performance was terrible.
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Dec 29, 2009
Currently I'm using a HashMap to map the strings to int and the int values need to be frequently accessed. I'm looking for a better way to do this if possible with minimal object creation, and preferable being able to store the values as primitive ints without wrapping them with the Integer class. (Basically, the reverse of the SparseArray's int->object mapping.)
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Aug 28, 2010
i have a list view and custom list adapter for it. There are various other fields in it and a Checkbox. The problem is that it is not able to map Checkboxes properly. I mean if an entry is already present in database it should come checked.When i put a log in the View function it shows some of the entries that are repeated, i think this is the main reason.
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Oct 1, 2010
I am newbie to OpenGL programming. I was going through the code of API demos.I understood how to map a single image resource on to all the 6 faces of the cube,but i want to know how can i map 6 faces of the cube with 6 different images. I searched in the web without any luck.Can any one give me some ideas links , pointers on the same.
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May 5, 2010
I have an Android application that displays VGA (640x480) frames using OpenGL ES. The application reads each frame from a movie file and updates the texture accordingly. My problem is that, it is taking almost 30 ms. to draw each frame using OpenGL. Similar test using the Canvas/drawBitmap was around 6 ms on the same device. I'm following the same OpenGL calls that VLC Media Player is using, so I'm assuming that those are optimized for this purpose.
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Oct 9, 2009
How do I run the emulator with WVGA854 skin so I get a 1-1 mapping of device to screen pixels? The WVGA854/layout file has "width 480 height 854" but when I run the emulator, I get these values for DeviceMetrics: density = 1.5 densityDpi = 240 scaledDensity = 1.5 heightPixels = 569 widthPixels = 320 xdpi = 240.0 ydpi = 240.0 I'd like to run the emulator so that I see heightPixels/widthPixels values of 854/480 in the code. I tried playing with the -dpi-device option but doesn't seem to help.
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Sep 1, 2010
I am looking for a mapping application that will let me browse maps offline, as well as plot points onto the map. Does anyone have any ideas which app might let me do that? According to the MapDroyd app, it won't let me plot points
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Jun 25, 2010
I have just began opengl programming in android and i am fairly new to opengl as well. I've been using nehe's opengl tutorials as well as insanitydesign's android ports.I successfully managed to create a cube with a single texture mapped to all its 6 faces. I even mapped multiple textures to different faces of the cube.But the way I did it was to create 6 faces seperately, have 6 seperate index and texture buffers and then using glBindTexture() with the selected texture for each face and then calling glDrawElements. Isn't there an efficient way around this. Should i use a cube map texture instead of a GL_TEXTURE_2D?
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Jun 25, 2010
I have just began opengl programming in android and i am fairly new to opengl as well. I've been using nehe's opengl tutorials as well as insanitydesign's android ports. I successfully managed to create a cube with a single texture mapped to all its 6 faces. I even mapped multiple textures to different faces of the cube.But the way I did it was to create 6 faces seperately, have 6 seperate index and texture buffers and then using glBindTexture() with the selected texture for each face and then calling glDrawElements. Isn't there an efficient way around this. Should i use a cube map texture instead of a GL_TEXTURE_2D?
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Jul 17, 2010
Is this project Tiny ORM written by Shawn O. Pearce going to be equivalent to Hibernate in Java ActiveRecord in Ruby Doctrine in PHP http:// android. git.kernel.org/?p=tools/gwtorm.git;a=summary Does any one know if Google is working on an ORM for Android. What are the similarities and differences between Tiny ORM and the above named projects? Why are protocol buffers being used in the ORM, I do not understand the relationship between protocol buffers and ORM concepts. I found the above link by reading this blog post.http://mobilebytes. wordpress.com /2009 /06/14/ android-orm-coming/ I have been hearing rumblings about this, but was just curious if anyone has any further information.
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Oct 29, 2010
I have several related database tables and I would like to treat their rows as objects and their tables as something like lists. What are the considerations that I have to keep in mind (for instance, ensuring that the objects stay consistent with one another and with the database, lazy loading)? And what is a good design pattern for implementing this? As I imaging the answer is pretty involved, a link to a good website would suffice.
On the other hand, if someone knows of Hibernate-like thing that really works on Android, I might give that a whirl (although it's a little heavy weight for me right now).
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Aug 7, 2011
I've a HTC Sensation and a few days ago i did a long press on the search button (bottom right). A pop up asked me what application to launch, i choose google voice and tick the case by default. I would like to come back on this choice...
Is there a way to modify which application or function is launched by default with a hardware button?
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Nov 21, 2012
Is there a android app that allows you to map and access SMB network shares on your local network? Just wondering as it'll be easier than using a streamer.
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Aug 6, 2012
I don't know how, but some app/bug changed the association of the emoticon in the messaging app of my phone; now the emoticon shows up only when I type " : - D i " instead of " : - D ". How to restore the correct mapping? I have a rooted Gsmart G1345 with GB 2.3.4
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Aug 7, 2010
Ok so here's the deal guys and gals, I am trying to have my phone assist me with my running. There are plenty of apps that will track my run via gps if I bring my phone on the run with me, but I don't wanna do that. I want to be able to map a course out, enter how long it took me, save the map and even share it with friends. Ideally the app would have the gps running features I mentioned above just on case I ever do start bringing my phone with me. Here is an example of what I mean in website form (unfortunately they make a sweet app for the iphone but their android version is pretty awful right now.MapMyRun.com -
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Jan 8, 2013
I am wanting to create CWM recovery for a device that doesn't currently have it, the EK-GC100 to exact, trouble is I can get it to boot, but because the device doesn't have volume buttons, only "Zoom in/out" the recovery cannot be navigated, what to do, to remap the keys in the recovery to buttons the device actually has?
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Apr 5, 2012
What I want to do is be able to map arbitrary keycodes to execute custom commands. I purchased a Bluetooth numeric keypad, and with CM7, I am able to sync it and generate key events. However, they're not mapped to anything, so it's pretty useless. My hope in buying this product was the ability to map the keys to input events and be able to control my phone (Maps, IME, etc) while my phone is docked in my car so I'm not doing the "distracted driving" thing. So, is there a way I could code an app/service that would capture key/scancodes and execute user-defined commands (such as screen events)? Further, could this service change its behavior when the IME is active, allowing me to map the keys to the on-screen keyboard? I use a T9 app, and if the program could map to screen events when the IME is active allowing me to type T9 on a physical keyboard, that would be amazing.
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Feb 9, 2012
Any way to take games with virtual controllers (D-Pad and buttons) and map them to physical keys?" Either on a built-in keyboard like the Droid 4, or the Xperia Play's keys, or even mapping them to a third party device such as a bluetooth keyboard or Wiimote/PS3 controller.
So what I was wondering, is if there already is an app out there that can take a point on the touchscreen, and assign it to a keypress on a physical device?
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Feb 22, 2010
What do you think is the best way to map the buttons for these two emulators (NESOID AND SNESOID). I'm having trouble finding a solution. Your help as always is appreciated...and yes I searched, but could only find info on the actual droid which has an actual keyboard not just a virtual one.
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Jul 25, 2013
How I may check the mount point mappings for my phone?
All i can understand is /system is /dev/block/mmcblk0p3" but how do check for the rest?
I already tried the following commands in terminal emulator but they didn't work:
mount
/proc/partitions
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Nov 9, 2009
The camera button just sits there useless until the camera is used. How about letting us map that to a function? Personally, I would like to be able to use it as a Pause/Play toggle. When I am out and about listening to music, I very often need to pause. Currently, this requires pulling out the phone, pressing the power button, swiping it open, and (if the music screen is up) pressing pause. That is WAY too long, and a simple hardware button would be perfect.
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Mar 8, 2012
I have a quick development question. I have an application that displays an image. You can pinch zoom/move the image around easy enough. What I'm wondering is how would I go about mapping the location of the users touch to the coordinates on the image itself, and not the screen?
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Oct 30, 2009
How do I map the device Y axis to the screen Y axis?I can't figure this out.I'm the developer of Tricorder, and I'm trying to make it so that the accelerometer and magnetometer indicators I draw always point in the right direction.On the G1 phone with the slider closed, all is well.But when I open the slider, I end up showing that gravity is pulling me to the left (if the phone is held with the display vertical).So, I know that the device, and hence sensor, Y axis is always in the direction of the earpiece; and the screen Y axis changes when I open the slider.And I know that I can use remapCoordinateSystem() to change the device axes to match the screen axes.But where do I find out what the device's orientation is?In other words, how do I compute the correct values for the X and Y parameters to remapCoordinateSystem()?
Configuration.orientation seems quite useless.Suppose it is set to LANDSCAPE.What does this mean?Does it mean a device which is "naturally" portrait (i.e. the sensor Y axis points to the narrow end), and which has been turned into landscape mode?If so, which way was it turned?Or does it mean a device which is naturally landscape?In other words, LANDSCAPE could mean that the screen axis is off from the sensor axis by +90, 0, OR -90 degrees.Not much help.So how do I do this?Obviously I want my app to work on all devices, not just the G1 phone.
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