Android :: How To Use Accelerometer Detection

May 20, 2010

I want to know how to calculate the accelerometer movement.When i place the mobile horizontally in idle state and similarly when i place the mobile in hands,So there accelerometer value change when it is place horizontally or while it is in hand vertically.How To Identify them,Any Sample Codes will be useful.

Android :: How to use Accelerometer Detection


Android :: Accelerometer False Detection

Oct 27, 2009

I have a code snippet to detect accelerometer movements. It works some times by properly detecting slight movements, but sometimes it detects movements when I kept my device idle too. Are there any problems with built-in accelerometer detection on Android?

I use an HTC G-1 device. My code snippet is below. How do I resolve it so I can detect small device movements but not detect anything when the device is idle?

CODE:..............

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Android :: Accelerometer Shake Side-to-side Detection

Jul 31, 2009

I'm developing an app and i need to detect when the user shakes the phone from side to side , that means just along one axis (in this case X).I want to know when the user shakes the phone to the left and when to the right, the problem is that my code does not detect shaking but tilt, i have tested this code and it works when i tilt the phone to left or to the right, but not when a shake it from side to side (no matter the orientation of the phone).

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Android :: Sounds + Accelerometer - Weird Accelerometer Values - BUG?

Jun 9, 2009

I am developing a game. In which the user controls movement using the accelerometer. Sounds effects can also be enabled. However when laying the phone flat down and playing the game without the accelerometer gives nice 0,0,0 values. However when play WITH SOUNDS on, i get a buch of weird values: while the phone is NOT moving.

This is really a big bug that makes life hard for Game Developers. I tried to take an avarge of the last 5 values from the sensor.. but this is not enough.. The harder the sounds plays: the higher the weird sensor values. When using the headphones: almost no weird values. Seems that sounds interferes with the accelerometer sensor.

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Android :: 1.5 Bug With Earphone Detection

May 5, 2009

On my Google dev phone there is a problem with the new 1.5 version in combination with an official HTC adapter cable YC A300 and 3.5mm earphones. Android doesn't recognize the earphones (it worked on 1.1!). Android still recognizes the HTC earphones with ExtUSB.

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Android :: Shake Detection On Emulator

Apr 30, 2010

I am pretty new to android. I have a use case where I need to detect a shake and show some images in my application. Can I test shake functionality on android emulator ? What are the other alternatives apart from testing it on a real phone ?

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Android :: Motion Detection Using Camera?

Jun 6, 2010

Is this possible? How do i do it? I want to learn but dont know where to begin even

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Android :: Sobel Edge Detection

May 30, 2010

As part of an application that I'm developing for Android I'd like to show the user an edge-detected version of an image they have taken (something similar to the example below).To achieve this I've been looking at the Sobel operator and how to implement it in Java. However, many of the examples that I've found make use of objects and methods found in AWT (like this example) that isn't part of Android.My question is then really, does Android provide any alternatives to the features of AWT that have been used in the above example? If we were to rewrite that example just using the libraries built into Android, how would we go about it?

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Android :: Increase Hit Detection On ItemizedOverlay

Sep 23, 2010

I have an itemizedOverlay extended and I want to increase the hit detection on the OverLayItem's if this is possible?

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Android :: Runtime API Level Detection

Apr 27, 2009

I'm trying to product a binary that is compatible with 1.1 and 1.5, but i'm having trouble with the ViewSwitcher class behaving different. I'd like to create a wrapper for it, but I need a way to programatically detect the api level at runtime.

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Android :: Face Detection In Phone

Nov 8, 2010

I am currently working on an experimental camera app. I'm looking into implementing face detection at the moment and am currently weighing up my options.I have considered the OpenCV port available for android and using their face detection functions, but from demos I have seen of previous implementations the camera seems to lag a lot.Considering the camera on the HTC desire has face detecting, I know it must be possible to get at least a semi decent face detection system in place. I was just wondering if anyone had an opinion on how I could get the best results.Using an available library? Implementing a particular algorithm myself?

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Android :: Using Face Detection Program

Nov 5, 2010

Has anyone ever used the API for face detect in their android program?More simply stated, can I have a java class that pulls up the camera, scans a person's face and returns parameters back into the program?

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Android :: Froyo - Killed Application Detection?

Jul 29, 2010

On Froyo, we found that some new "Task Manager" apps are now using the ActivityManager.killBackgroundProcesses() to kill apps. When this happens, Intent.ACTION_PACKAGE_RESTARTED is no longer fired. How can I find out that my application has been killed? I tried to start a service, and I do see this message printed in logcat:

W/ActivityManager( 2426): Scheduling restart of crashed service com.example.android.apis/.app.RemoteService in 20000ms

However, the service is never restarted as advertised, if the app is killed using the killBackgroundProcesses API. (If I go into adb shell and kill the service process, the service will indeed be restarted ...) This looks like a bug anyway, because the notification created by the app is no longer removed like in eclair (the StatusBarService, and a bunch of other system services, depend on the Intent.ACTION_PACKAGE_RESTARTED broadcast).

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Android :: Enter Button With Finger Detection?

Apr 2, 2010

I'm working on a soundboard, however I've got a problem when it come to drag the finger over the screen to play the sounds for the buttons I drag the finger over.Do anyone know how I can detect when a finger enter a button and not click the button?

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Android :: Google Sky Map A Little Off / Orientation Detection Of Phone?

Jul 1, 2010

I've been trying out Google Sky Map and it seems a bit off. I hold my phone in landscape mode and point it at the moon as if I were going to take a picture of it. The application shows the moon about 5-10 degrees off from where it actually is. Is this just the accuracy of the compass and orientation detection of the phone?

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Android :: Simple Bluetooth Presence Detection

Apr 12, 2010

Really general, very new to bluetooth. Can we have one android device broadcasting a simple 'hello' bluetooth network (maybe a radius of just a few feet) - then when other android devices come into that area, reply with a 'hello' back? The client devices moving through the 'hello' radius wouldn't need to be always be checking for presence. I'd let the user open an app and check for bluetooth networks nearby. If they find one of these hubs, they can then choose to broadcast back a hello.Is that at all possible? Any general info would be great.

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Android :: Complex Object Collision Detection

Nov 29, 2009

I am currently working on a collision detection routine for an Android based game which is capable of handling complex concave curves in 2D. I use complex in this post to describe any non-trivial, arbitrary shape (beyond circles, squares, etc). My problem is that all of the various methods I have come across are either too simplistic to be realistic or too complex for a cell phone. At the moment I am favoring a tile-based scheme but I am having problems figuring out how to do this with convex curves that span several tiles and may have several line segments per tile. I gave some thought to representing the curves mathematically, with each tile being an interval of the function, but there will likely be points where the curve doubles-back on itself (think the big loop at the top of a pinball table that brings the ball all the way around the table and back the direction it came). My questions boil down to:

1. Does anyone know of a way of hit testing a given simple shape (e.g. a circle) against a concave series of line segments (shapes beyond circles can be figured out from there) beyond just a Boolean result?

2. What is the best way to represent large, complex shapes programatically? I am currently favoring an XML file describing my levels and the objects in them with shape/position/physics/etc. data to be parsed in during load time.

3. Is there an altogether better way of doing this beyond line segments?

The one saving grace in this conundrum is that I know the vast majority of the objects are stationary with, at most, three or four (usually one) dynamic objects moving around.

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Android :: Voice Activity Detection In Phone

Oct 15, 2010

I am writing an application that will behave similar to the existing Voice recognition but will be sending the sound data to a proprietary web service to perform the speech recognition part. I am using the standard MediaRecord (which is AMR-NB encoded) which seems to be perfect to speech recognition. The only data provided by this is the Amplitude via the getMaxAmplitude() method.I am trying to detect when the person starts to talk so that when the person stops talking for about 2 seconds I can proceed to send the sound data to the web service. Right now I am using a threshold for the amplitude that if its goes over a value (i.e. 1500) then I assume the person is speaking. My concern is that the amplitude levels may vary by device (i.e. Nexus One v Droid), so I am looking for a more standard approach to this that can be derived from the amplitude values.

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General :: WMP / MTP / Android Audio Format Detection

Mar 5, 2014

According to the MS website, Windows Media Player queries an MTP device to see what formats it supports. My Razr Maxx HD supports ogg and m4a. When attempting to sync WMP does not sync those files stating they might not be supported on the device. Being that I've had so much trouble in the past even getting any of the Android devices to be properly detected as an MTP device I'm worried this is a driver issue.I should be able to get WMP to at least convert them.

this is the device mis-reporting the formats, Windows not querying them properly, or an actual WMP issue? Would like to be able to get sync working without any conversions. Maybe there is a way to hardcode formats within the mtp inf file?

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Android : IPhone / Droid Swipe Detection For Mobile Browser

Jun 30, 2010

Is it possible to detect that the viewport is being dragged by a touch event?

Using the following code I am able to get the position of where the finger touched the screen, what node started the event and where it was dragged to. Which solves one of the problems but I would really like to detect when the user has dragged the page/window/viewport down.

To attempt to be more clear as to what I am trying to do: I would like simulate the refresh activity in Tweetie 2/Twitter for iPhone but in HTML5 and JavaScript. Code....

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General :: Alcatel OT 990 - No USB Detection?

Jun 6, 2012

Ive got a Rooted and Unlocked to any network OT 990, I have a problem when trying to connect the USB cable Nothing happens apart from the phone charges, Windows does not detect the phone. Have tried in XP and Win 7.

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Motorola Milestone :: USB Connection Detection

Jul 10, 2010

I've had a Milestone for about a month now and have noticed that it seems to have problems detecting that the USB cable has been connected.Sometimes when I connect it, to the mains charger or to a PC, it doesn't indicate that anything has happened - no USB notification and no lightning symbol on the battery to show that it is charging. If I power the phone off and then connect it the phone turns on and shows the USB notification.Has anyone else experienced this or should I look at getting the phone exchanged?

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HTC Desire :: Face Detection Capabilities

Sep 16, 2010

does anyone know how does face detection work in the desire's camera. i have it enabled but i don't see any changes. any ideas guys?

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General :: Home WiFi Detection

Jul 26, 2012

Is there any way to have my wifi automatically turn off when i leave my home wifi connection? I'm trying to not have it continue to search for signal ans drain bay when not in range at home

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General :: SoundHound / Shazam - Inbuilt Audio Detection

Dec 14, 2012

I was wondering if there is anyway to make SoundHound or Shazam to detect musics that played from Internet radio, ie "tunein" or alikes, that usually plays only if you plug your headphones in?

It seems SoundHound and Shazam can only detect incoming sound using the phones mic, so if nothing is going to mic it will not detect anything at all.

I saw in a post from a Sony Xperia user that he accidently made it working but i think its only for that particular phone.

Any workarounds/mods to make this work on any android device?

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Android :: Accelerometer For Gaming

Jul 10, 2009

I'm designing a game for Android and I would like to use the accelerometer for some aspects of control. Has anyone come across a tutorial or example for something like this?

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Android :: How Do I Readjust Accelerometer?

Jan 15, 2010

My accelerometer is not reading the angle of the phone right. When I play Teeter I have to keep the phone on a sharpe angle to keep the ball still, and I feel I have to rotate it extra to go into landscape mode. Now the question is... how do I readjust the accelerometer?

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Android :: Example App That Uses Accelerometer Sensor?

Jan 23, 2009

Where can I find a simple example application that uses the Accelerometer Sensor?

I've seen the Open Intents applications, but I'd rather use the raw Android API, at least until I understand it a little better. I'm surprised at the lack of documentation.

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Android :: Get A Single Accelerometer Value?

Aug 23, 2010

I'm working on adding a calibration feature to an accelerometer-driven game. For the calibration, I need a single value from the accelerometer. Should I register a listener, get the first value it gives me, and unregister it, or is there a better way to get just one value?

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Android :: Accelerometer Direction Of Shake?

Apr 8, 2010

I've been playing with the data given by the accelerometer,trying to work out how I can gauge a shake from front to back or side to side. This all seems straightforward enough.But I'd love to know the direction of the shake. So, if the user is shaking backwards and forwards, I want to know if the device is moving away from the user, or back towards him/her. I can't find any way of telling this.

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