Android :: Getting Magnetic Field Results As Degrees
Dec 12, 2009
I'm working on an application that will randomly point an arrow in a direction, and have that arrow maintain it's direction if the device is moved. All I want to do it get the magnetic field readings as degrees and I can do it from there. The problem I'm having is getting the magnetic field readings. I can't find any tutorials on it and the API demo on google's dev site uses deprecated code (figures, google's sample code is never n00b friendly).
At this point I've got this together but I don't know what I'm missing, all the examples I can find are using SensorListener which has onSensorChanged(int sensor, float[] values) but SensorEventListener does not support "float[] values"
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Mar 24, 2010
I have noticed a rash of EMF "detectors" currently available for the iPhone 3GS only.
Does the Milestone/Droid series phones have the capability to detect EMF and if so does anyone know of a current app or one in development that will do this? I've searched the app store without finding a clear result.
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Jul 27, 2010
When using a BB and starting an email, in the name field I could type "Jo Ba" and the search results would return Joe Barnes and John Baker and I could choose from either. I do the same on the Incredible and get nothing. Additionally, if I wanted to get the name of someone at a specific company I could go to the contacts and type "Goog" and all the contacts that had Google in them would show on the screen. Am I missing something, is there a better way or is there an app that handles people searches a bit better?
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Nov 2, 2010
Does anyone know the difference between the orientation sensor and magnetic field sensor on Android?Since I've read that magnetometer is synonymous with digital compass I'm a little bit confused. What are they really?
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Jun 28, 2010
Are there any 3rd party apps out there that rotate the screen 180 degrees? I can't seem to find any.Most times, I find it easier to use my Cliq if it is upside down (such as listening to music and charging.)
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Jul 22, 2010
Is there a way to include the small circular degrees symbol to a Text View? This would be for temperature readings, as in degrees Celsius or Fahrenheit. I'm finding this an awkward question to Google, and wondering if anyone has done this program apically before.
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Apr 20, 2009
Does anyone know how to convert the accelerometer readings from g's to degrees?For example, if I want to use the x-axis readings and measure the tilt of the phone, flat would be 0g = 0 degrees and a 90 degree tilt to the right would be 1g (9.80665 m/sec^2).I can't come up with a formula for say 20 degrees or 45 degrees. Any help would be greatly appreciated.
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Oct 5, 2010
I would like to display some UI Elements on a android xml layout file. I try to make an application, where two players can sit at each end of the mobile device, and play against each other.
So need to show some Button 180 degrees rotateted.
Is this possible? I tried android:gravity, but this did not work.
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Jun 8, 2010
How to rotate control (checkbox) in 180 or 90 degrees ?
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Oct 26, 2010
I have a database with coordinates in Degrees Minutes Seconds format, is there any way to change them to decimal coordinates using Android built in function or is there any simpler way to show such coordinates in a mapview ?
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Dec 16, 2009
I have noticed that the magnetic flap of my droid pouch has activated the phone every time I insert or pull the phone in/out of the pouch. Even though, the screen will shut off as it supposes to be, but I just wonder will the magnetic will affect, or damage the phone, such as the GPS feature.
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Jun 16, 2010
My eve was running at 56 degrees celsius in my house earlier today. Wtf? I found out with juice plotter.The phone was at idle and i picked up to send out a text and and it was really warm to the touch.I took out the battery for an hour or so. It's been back on for a few hours now and its at thirty six celsius.Any suggestions ?
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Nov 8, 2010
Please link me to any website from where I can see the 360 Degrees View of Samsung Vibrant?
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Aug 3, 2010
When I turn it upside down it stays the same?
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Jun 22, 2010
I thought this thing had an accelerometer in it? It only goes from portrait to landscape instead of 360 degrees depending on when you turn it like my Pre? When holding the phone in your right hand and it is connected to the charger and on the net the damn cord gets in the way. Am i missing something here? You have got to be kidding me if there is no way to change this?
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Apr 6, 2010
Cyanogen 5.0.5.6 with bekit 1ghz running at 40 degrees. Is this a bad combination? I'm constantly at 40 degrees. If not there, usually upper 30s. I'm hearing people are often in low 20s with their ROMs. What's the deal? I don't even play games that much, nor do I browse intense websites. Would you suggest a different kernel?
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Jun 2, 2013
My g-sensor is working but is shifted for 90 degrees. So when my tablet is in landscape, screen is in portrait and vice cersa.How to calibrate it? I am having JB 4.2.2.
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Dec 11, 2009
Has anyone used a magnetic mount like this?
HTC Droid Eris Phone Holder and Mount Cellular Accessory
Should I be worried about magnets messing up my phone, or is that just an old wives tale?
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Oct 3, 2010
I've looked around and have noticed a number of complaints, but I haven't found any solutions, so I beg of your advanced knowledge and expertise... would anyone be able to help me?
I own a motorola milestone, and I love it to pieces. However, I am finding that the leather case I have has a magnetic clasp which triggers the phone to enter into multimedia mode. This is very annoying, as I never plan to use this mode so I was wondering one of two things.
1. am I able to reassign the magnetic trigger from "open multimedia dock app" to "enter standby". Considering I just rooted the phone, i would imagine that I have the priveledges to do so, but I'm unaware of what level that control would be on and if I could manipulate it without bricking the phone.
2. am I able to completely remove this app? so that the magnetic trigger just does nothing?
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Sep 21, 2010
Has anyone used those magnetic macro or optical zoom lenses you can attach to the camera lens?
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Feb 18, 2010
I understand that one should not use a case with magnetic closure because it adversely affects the Moto Droid -I believe the concern is the GPS radio. When I first got the Droid I used an old Covertec Palm case, which has magnetic closure, to tide me over until I bought a new case. Did I fry the GPS radio? Google Maps cannot find my location and my SMobile security system cannot find me either. WeatherBug is on and off in knowing my location. Thoughts about magnets and Droid?
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Jul 9, 2010
I have both the Spica and the S side by side. When I tested their compasses, they're pointing in different directions.
I pressed *#0*#. There's nothing unusual on the Spica. The S' Magnetic Sensor Test Self Test says "PASS". However, under sensor, under MAGNETIC Sensor, it says "Need for calibration #". The # fluctuates from 0 to 3 (0, 1, 2, and 3). What does this mean? It says "Need for calibration" but I don't see any options to calibrate the magnetic sensor.
I've already tried the #8 motion in different axes & it didn't fix anything. Is this normal? Is the S supposed to say "Need for calibration" under the MAGNETIC Sensor section?
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Dec 17, 2009
I may be purchasing a Droid soon. One thing that worries me a little is the GPS/Dock function that "activates" when you dock it in the media or car dock. From what I understand this triggers due to magnets that the Droid senses.
I use a leather money clip that holds like 10 cards then has a clip with a magnet in it to hold bills. (See picture).
My concern is that if I keep the Dtoid in my right pocket with my wallet it's going to activate and start draining the battery like crazy. As the phone would be too big to fit in the small "change" pocket on jeans that I used to use for my LG Voyager and previous phones it has me a little worried how I'm going to tote it around. I may buy one of those glasses cleaning clothes and wrap it in that, but the magnetic portion could still be an issue.
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Jun 9, 2010
Review: Magnetic macro lens for HTC EVO 4G
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Jun 22, 2010
Is it possible that the magnetic closure on the HTC leather holster is causing reboots on my EVO? I've wanted a leather holster since I got the EVO, but could find one I like and fit the phone. Yesterday, I decided to purchase the HTC holster from Sprint ($29.99). Since then, my phone as rebooted at least 6 times this morning - kinda annoying. It's not an app 'cause I haven't downloaded anything in days, so I figured that maybe the magnets (which are right there by the back of the phone) are interupting something.
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Jul 27, 2010
For some reason it shows 103 degrees no matter the time or location. The city changes and the low/high temps change but not the current temperature. Any else ran into this?
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Mar 22, 2010
I originally purchased a holster off of ebay that was meant for an iPhone (seeing as they're about the same dimensions), but its clasp is magnetic and will randomly confuse the phone into thinking it's in car mode.I just got another case (this one) that has a velcro clasp and was marketed for the Droid. Well...it came in the mail today and my phone definitely doesn't fit in it.Has anyone found a decent holster that doesn't use a magnetic clasp? I found that verizon has one, has anyone tried it? I don't ever use the belt clip, so I'd like to get a case that the belt clip is removable.
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Nov 9, 2009
So it's no secret that the super-special-awesome multimedia and car docks use magnetics to get you into that mode. But I got curious just now, so here is what happens when you put 1/4" cube neodymium magnets on certain spots on the device. If you already figured that this is how it works, good for you.
These pictures are terrible, yes. You can click on them to see them in their full-sized horror. I didn't make a point of being artistic here, I just want to show you what happens. And yes, that is a box of Sensodyne. It was on my bathroom vanity, which is the best-lit area of my house at nighttime.
This is where you want to put the magnet to activate the sensor.
But the polarity is the key to choosing which "dock" gets activated. I don't have a polarity indicator to tell me which pole is which, but suffice it to say that one pole activates multimedia, and the other activates car.
I tried this with 5mm diameter, 1mm thick neodymium disks, but they didn't work. That's the only other size I have besides 1" cubes which I'd be afraid to put by my phone though.
You may want to look into something like 5mm by 2mm or 10mm by 2mm or something. 1/4" cubes aren't very compact if you're looking to be thrifty and make your own dock. You could just slip a thin disk into your design and it'd be totally discreet. Hey, making your own dock or buying an el cheapo one and slipping in a 10 cent magnet sure beats buying a $30 one, doesn't it?
This also shows us that there may not be any more special docks to come, and if there will be, they won't be based on this technology. After all, both poles of the magnetic sensor have already been used.
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Jul 18, 2010
I have a HTC Desire and it fits nicely inside a flip case, held closed with a magnet. I am no scientist but a good friend of mine, who is a scientist, seems to think that a magnet could damage the phone!
I have heard that they can mess with the internal compas (i didnt even know i had one until yesterday) but what about the motor in the lens, will this be damaged being an electro magnetic motor?
I am most worried about the screen being effected by a magnetic field always being near (even on) it.
Has anyone had any experience of a HTC Desire being messed up with a magnet or can anyone reassure me that the 3 ebay phone case is phone friendly?
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Aug 10, 2013
The magnetic sensor in my stock rom (JB) is deviated from the direction. and it is due to faulty sensor files in the stock rom. The sensor works perfect in old ICS version.
Calibration apps wont work because the problem lies in the sensor files itself
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