แสดงบทความที่มีป้ายกำกับ Android Magnetic Fields Sensor แสดงบทความทั้งหมด
แสดงบทความที่มีป้ายกำกับ Android Magnetic Fields Sensor แสดงบทความทั้งหมด

วันเสาร์ที่ 17 ธันวาคม พ.ศ. 2554

Android Magnetic Fields Sensor Detection App.




Android Magnetic Fields Sensor Detection App.




















 We've test Magnetic Fields Sensor for Android Mobile phone.( LG Optimus One P500 )

public class

GeomagneticField

extends Object
java.lang.Object
   ↳ android.hardware.GeomagneticField

Class Overview

This class is used to estimated estimate magnetic field at a given point on Earth, and in particular, to compute the magnetic declination from true north.
This uses the World Magnetic Model produced by the United States National Geospatial-Intelligence Agency. More details about the model can be found at http://www.ngdc.noaa.gov/geomag/WMM/DoDWMM.shtml. This class currently uses WMM-2010 which is valid until 2015, but should produce acceptable results for several years after that. Future versions of Android may use a newer version of the model.

Summary

Public Constructors
GeomagneticField(float gdLatitudeDeg, float gdLongitudeDeg, float altitudeMeters, long timeMillis)
Estimate the magnetic field at a given point and time.
Public Methods
float getDeclination()
float getFieldStrength()
float getHorizontalStrength()
float getInclination()
float getX()
float getY()
float getZ()
[Expand]
Inherited Methods
From class java.lang.Object



more info about Android Development
http://androiddevelopersthai.blogspot.com/