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2014/10/16 ¤W¤È 08:23:40
android Programming Glossary: sensorsConvert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame about the problem in advance. android sensor android sensors magnetometer magnetic share improve this question In my.. is the correct value. The accelerometer and magnetic field sensors measure the acceleration of the device and the magnetic field.. m does not change but the event.values returns by the sensors are different because the basis is different I will talk about..
LocationListener of NETWORK_PROVIDER is enabled but , onLocationChanged is never called http://stackoverflow.com/questions/15747543/locationlistener-of-network-provider-is-enabled-but-onlocationchanged-is-never was showing always correct location because it uses other sensors information also apart from Network location provider. But here..
Android Compass that can Compensate for Tilt and Pitch http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch added low pass filters to filter out the gitter from the sensors. However the compass is only stable when the phone is flat on.. I have to abandon my project. Thanks Adam android android sensors share improve this question By co incidence I've been thinking.. erratic. Note that the code records the accuracy of the sensors via the method onAccuracyChanged Sensor sensor int accuracy..
Android: Temporarily disable orientation changes in an Activity http://stackoverflow.com/questions/3611457/android-temporarily-disable-orientation-changes-in-an-activity ALWAYS change the screen orientation without emulating sensors moves. EDIT this was not the best possible answer. As explained..
Android phone orientation overview including compass http://stackoverflow.com/questions/4819626/android-phone-orientation-overview-including-compass been trying to get my head around the Android orientation sensors for a while. I thought I understood it. Then I realised I didn't... is pointing South and Y axis point to the sky. Now the sensors on the phone allow you to work out the orientation not location.. over on your right hand. Your inner ear has gravitational sensors youtube clip which allow you to detect if you are falling forward..
Android - disable landscape mode? http://stackoverflow.com/questions/582185/android-disable-landscape-mode hardware dock. So most apps should just let the phone sensors software and physical configuration make their own decision.. changes mid activity that you think the device's sensors and software won't cope with well for example in a tilt based..
how to calculate phone's movement in the vertical direction from rest? http://stackoverflow.com/questions/6291110/how-to-calculate-phones-movement-in-the-vertical-direction-from-rest that I have already gone through the articles about sensors and accelerometers but I couldn't really find anything to help..
How to use Accelerometer to measure distance for Android Application Development http://stackoverflow.com/questions/6352681/how-to-use-accelerometer-to-measure-distance-for-android-application-development a point. Thank You Arslan android accelerometer android sensors share improve this question You get position by integrating..
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer indoor position. My phone is an Google Nexus S using two sensors the first being an Accelerometer and the second being a Gyroscope... starting reference point a known GPS position using the 2 sensors accelerometer for motion and Gyro for directions track the phone.. is that i have no idea how to combine both of these sensors to give me an actual position I have read some article on internet..
Android TYPE_LINEAR_ACCELERATION sensor - what does it show? http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show TYPE_GRAVITY TYPE_ROTATION_VECTOR are fused sensors which return respectively the linear acceleration gravity and..
Convert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame magneticYTextView private TextView magneticZTextView Sensors. private Sensor mAccelerometer private Sensor mGeomagnetic private..
Android Compass orientation on unreliable (Low pass filter) http://stackoverflow.com/questions/4699417/android-compass-orientation-on-unreliable-low-pass-filter I use the values from a MagneticField and Accelerometer Sensors to calculate the device orientation with SensorManager.getRotationMatrix..
How do I use the Android Accelerometer? http://stackoverflow.com/questions/5180187/how-do-i-use-the-android-accelerometer You should try to read the Android Developer Guide on Sensors. There are a bunch of tutorials AndroGames Android Accelerometer..
http://stackoverflow.com/questions/5774496/android-gyroscope-examples android development Best Android 2.0 development book Sensors Android Gyroscope tutorial or sample code Android accelerometer.. library os android sensor index.html ca dgr lnxw09Android Sensors S_TACT 105AGX59 S_CMP grlnxw09 SGS Yes it has accelerometer..
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer Smoothers Pedestrian Tracking with Shoe Mounted Inertial Sensors Enhancing the Performance of Pedometers Using a Single Accelerometer..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation Smoothers Pedestrian Tracking with Shoe Mounted Inertial Sensors Enhancing the Performance of Pedometers Using a Single Accelerometer..
Convert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame Thanks everybody who read this post and who post some thoughts about the problem in advance. android sensor android sensors magnetometer magnetic share improve this question In my comment on the checked answer on the link you provided above.. values . If you read further on the X is always very small is the correct value. The accelerometer and magnetic field sensors measure the acceleration of the device and the magnetic field of the earth at the device location respectively. They are.. term it is a moving coordinate system. Thus even though m does not change but the event.values returns by the sensors are different because the basis is different I will talk about fluctuation later . As is the event.values are useless because..
LocationListener of NETWORK_PROVIDER is enabled but , onLocationChanged is never called http://stackoverflow.com/questions/15747543/locationlistener-of-network-provider-is-enabled-but-onlocationchanged-is-never only solution was force device restart . Though google map was showing always correct location because it uses other sensors information also apart from Network location provider. But here is good news not Long time back Google introduced Fused..
Android Compass that can Compensate for Tilt and Pitch http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch phone Nexus 4 which will be used in a model boat. I've added low pass filters to filter out the gitter from the sensors. However the compass is only stable when the phone is flat on its back. If I tilt it up such as turning a page of a booK.. other axis roll or pitch . Can anyone please help before I have to abandon my project. Thanks Adam android android sensors share improve this question By co incidence I've been thinking about this problem for several weeks because As a mathematician.. by using a low pass filter if the inputs turn out to be a bit erratic. Note that the code records the accuracy of the sensors via the method onAccuracyChanged Sensor sensor int accuracy so if the azimuth seems unstable another thing to check is how..
Android: Temporarily disable orientation changes in an Activity http://stackoverflow.com/questions/3611457/android-temporarily-disable-orientation-changes-in-an-activity it's broken when testing on the emulator the ctrl F11 shortcut ALWAYS change the screen orientation without emulating sensors moves. EDIT this was not the best possible answer. As explained in the comments there are issues with this method. The real..
Android phone orientation overview including compass http://stackoverflow.com/questions/4819626/android-phone-orientation-overview-including-compass phone orientation overview including compass I've been trying to get my head around the Android orientation sensors for a while. I thought I understood it. Then I realised I didn't. Now I think hope I have a better feeling for it again.. to the diagram below I have the X axis pointing East the Z axis is pointing South and Y axis point to the sky. Now the sensors on the phone allow you to work out the orientation not location of the device in this situation. This part has always confused.. Similarly if someone shoves you left shoulder you will fall over on your right hand. Your inner ear has gravitational sensors youtube clip which allow you to detect if you are falling forward back or falling left right or falling down or up . Therefore..
Android - disable landscape mode? http://stackoverflow.com/questions/582185/android-disable-landscape-mode app for one specific model of tablet always used in a fixed hardware dock. So most apps should just let the phone sensors software and physical configuration make their own decision about how the user wants to interact with your app. A few cases.. in your use case If your main concern is accidental orientation changes mid activity that you think the device's sensors and software won't cope with well for example in a tilt based game consider supporting landscape and portrait but using..
how to calculate phone's movement in the vertical direction from rest? http://stackoverflow.com/questions/6291110/how-to-calculate-phones-movement-in-the-vertical-direction-from-rest a height change between point A and point B how would i calculate that I have already gone through the articles about sensors and accelerometers but I couldn't really find anything to help me with that. Anyone have any ideas android accelerometer..
How to use Accelerometer to measure distance for Android Application Development http://stackoverflow.com/questions/6352681/how-to-use-accelerometer-to-measure-distance-for-android-application-development by an iPhone using the accelerometer . But I didn't come to a point. Thank You Arslan android accelerometer android sensors share improve this question You get position by integrating the linear acceleration twice but the error is horrible...
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer and Accelerometer I am developing an Android App to track indoor position. My phone is an Google Nexus S using two sensors the first being an Accelerometer and the second being a Gyroscope. My idea is that from a starting reference point a known.. and the second being a Gyroscope. My idea is that from a starting reference point a known GPS position using the 2 sensors accelerometer for motion and Gyro for directions track the phone when moving. And display on a map when the user is going... And display on a map when the user is going. But the problem is that i have no idea how to combine both of these sensors to give me an actual position I have read some article on internet that talk about kalman filter and after some more research..
Android TYPE_LINEAR_ACCELERATION sensor - what does it show? http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show helpers. This sensor is heavily processed . TYPE_LINEAR_ACCELERATION TYPE_GRAVITY TYPE_ROTATION_VECTOR are fused sensors which return respectively the linear acceleration gravity and rotation vector a quaternion . It is not defined how these..
Convert magnetic field X, Y, Z values from device into global reference frame http://stackoverflow.com/questions/15315129/convert-magnetic-field-x-y-z-values-from-device-into-global-reference-frame measurements. private TextView magneticXTextView private TextView magneticYTextView private TextView magneticZTextView Sensors. private Sensor mAccelerometer private Sensor mGeomagnetic private float accelerometerValues private float geomagneticValues..
Android Compass orientation on unreliable (Low pass filter) http://stackoverflow.com/questions/4699417/android-compass-orientation-on-unreliable-low-pass-filter a ImageView depending on the Orientation of the device. I use the values from a MagneticField and Accelerometer Sensors to calculate the device orientation with SensorManager.getRotationMatrix rotationMatrix null accelerometerValues magneticFieldValues..
How do I use the Android Accelerometer? http://stackoverflow.com/questions/5180187/how-do-i-use-the-android-accelerometer code android accelerometer share improve this question You should try to read the Android Developer Guide on Sensors. There are a bunch of tutorials AndroGames Android Accelerometer Tutorial AndDev Accessing the Accelerometer And there's..
http://stackoverflow.com/questions/5774496/android-gyroscope-examples Now to answer your questions Books Good book for beginning android development Best Android 2.0 development book Sensors Android Gyroscope tutorial or sample code Android accelerometer http www.helloandroid.com tutorials using android phones.. for android 1 6 http www.ibm.com developerworks opensource library os android sensor index.html ca dgr lnxw09Android Sensors S_TACT 105AGX59 S_CMP grlnxw09 SGS Yes it has accelerometer and compass sensors http www.phonearena.com phones Samsung Galaxy..
Indoor Positioning System based on Gyroscope and Accelerometer http://stackoverflow.com/questions/7499959/indoor-positioning-system-based-on-gyroscope-and-accelerometer Indoor Localization and Tracking Using Sigma Point Kalman Smoothers Pedestrian Tracking with Shoe Mounted Inertial Sensors Enhancing the Performance of Pedometers Using a Single Accelerometer I have no idea how these methods would perform in real..
Android accelerometer accuracy (Inertial navigation) http://stackoverflow.com/questions/7829097/android-accelerometer-accuracy-inertial-navigation Indoor Localization and Tracking Using Sigma Point Kalman Smoothers Pedestrian Tracking with Shoe Mounted Inertial Sensors Enhancing the Performance of Pedometers Using a Single Accelerometer I have no idea how these methods would perform in real..
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