使用GPS获取经纬度

GPSHelper.java文件:

package edison.gps;

import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;

public class GPSHelper {

	private Context con;
	private double mLatitude = 0;
	private double mLongitude = 0;
	private LocationManager mLocationManager;

	public GPSHelper(Context con) {
		this.con = con;
	}

	public static GPSHelper mGps;

	public static GPSHelper getGpsInstance(Context mCon) {
		if (mGps == null) {
			mGps = new GPSHelper(mCon);
		}
		return mGps;
	}

	/** Get the locationManager object and set GPS update listener. */
	public void openGps() {
		mLocationManager = (LocationManager) con
				.getSystemService(Context.LOCATION_SERVICE);
		/**
		 * Register the listener with the Location Manager to receive
		 * locationupdates
		 */
		mLocationManager.requestLocationUpdates(
				LocationManager.NETWORK_PROVIDER, 6000, 0, locationListener);
	}

	/** Close the gps service. */
	public void closeGps() {
		if (mLocationManager != null) {
			mLocationManager.removeUpdates(locationListener);
		}
	}

	/** Get the latitude location. */
	public double getLatitude() {
		return mLatitude;
	}

	/** Get the longitude location. */
	public double getLongitude() {
		return mLongitude;
	}

	private void updateWithNewLocation(Location location) {
		if (location != null) {
			mLatitude = location.getLatitude();
			mLongitude = location.getLongitude();
		}
	}

	private final LocationListener locationListener = new LocationListener() {
		public void onLocationChanged(Location location) {
			updateWithNewLocation(location);
		}

		public void onProviderDisabled(String provider) {
		}

		public void onProviderEnabled(String provider) {
		}

		public void onStatusChanged(String provider, int status, Bundle extras) {
		}
	};

}

GpsLocation.java

package edison.gps;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class GpsLocation extends Activity {

	private Button mGetLocation;
	private TextView mLongitude, mLatitude;
	private GPSHelper mGps;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		mGps = GPSHelper.getGpsInstance(getApplicationContext());
		findView();
	}

	public void findView() {
		mGetLocation = (Button) findViewById(R.id.mGetLocation);
		mGetLocation.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				mGps.openGps();
				mLongitude.setText(String.valueOf(mGps.getLongitude()));
				mLatitude.setText(String.valueOf(mGps.getLatitude()));
			}
		});
		mLongitude = (TextView) findViewById(R.id.mLongitude);
		mLatitude = (TextView) findViewById(R.id.mLatitude);
	}
}

    在这2个类里面获取的GPS坐标时,需要在手机上设置一个选项:允许手机使用无线网络通过基站来获取位置信息(这样可以保证在室内或室外都可以快速的获取GPS定位坐标)

需要加几个权限:

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />