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Android GPS Tutorial

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GPS Technology: SimplifiedThe Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.

Introduction

1. Android Application DevelopmentGPS AccessAhsanul Karimahsanul.karim@sentinelbd.comSentinel Solutions Ltd.http://www.sentinelbd.com

2. GPS Technology: SimplifiedThe Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS.

3. GPS Technology: Simplified (Contd.)Global Positioning System satellites transmit signals to equipment (receivers) on the ground. GPS receivers passively receive satellite signals; they do not transmit. GPS receivers require an unobstructed view of the skyDepend on a very accurate time reference, which is provided by atomic clocks at the U.S. Naval Observatory. Each GPS satellite has atomic clocks on board.Each GPS satellite transmits data that indicates its location and the current time. All GPS satellites synchronize operations so that these repeating signals are transmitted at the same instant. The signals, moving at the speed of light, arrive at a GPS receiver at slightly different times because some satellites are farther away than others. The distance to the GPS satellites can be determined by estimating the amount of time it takes for their signals to reach the receiver. When the receiver estimates the distance to at least four GPS satellites, it can calculate its position in three dimensions.There are at least 24 operational GPS satellites at all times. The satellites, operated by the U.S. Air Force, orbit with a period of 12 hours.

4. GPS Technology: Determining Position

5. GPS AccessCreate a project Named “UseGps”We need to add some permissions to use GPS and Internet

6. GPS Access3. Now we need add a location listener, so each time the GPS senses a new location, this callback function will be called from the android system.To do this, we need to add the fallowing code in the onCreate() method:

7. GPS Access4. We now have to create MyLocationListener class that implements LocationListener and Implement methods for various events:· onLocationChanged ( Location Update )· onProviderDisabled ( GPS Off )· onProviderEnabled (GPS On )

8. GPS Access

9. GPS Access5. Now we run the app in emulator and use emulator control to emulate the GPS module

10. GPS Access6. Now we’ll add a webview to main.xml layout and show the location in a map7. Capture the webview by findViewById()

11. GPS Access8. Now when the location is changed 9. Lets run it again

12. GPS Access

Android GPS Tutorial

Android GPS Tutorial Posted on 23-03-2014  GPS Technology: SimplifiedThe Global Positioning System (GPS) is a satellite-based navigation system made up of a network of 24 satellites placed into orbit by the U.S. Department of Defense. GPS was originally intended for military applications, but in the 1980s, the government made the system available for civilian use. GPS works in any weather conditions, anywhere in the world, 24 hours a day. There are no subscription fees or setup charges to use GPS. 1.25/10 719

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