Android AGPS 定位 测试程序

Java代码 收藏代码

import android.app.Activity;

import android.content.Context;

import android.location.Criteria;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.widget.TextView;

public class CurrentLocation extends Activity {

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

LocationManager locationManager;

String serviceName = Context.LOCATION_SERVICE;

locationManager = (LocationManager)getSystemService(serviceName);

//String provider = LocationManager.GPS_PROVIDER;

Criteria criteria = new Criteria();

criteria.setAccuracy(Criteria.ACCURACY_FINE);

criteria.setAltitudeRequired(false);

criteria.setBearingRequired(false);

criteria.setCostAllowed(true);

criteria.setPowerRequirement(Criteria.POWER_LOW);

String provider = locationManager.getBestProvider(criteria, true);

Location location = locationManager.getLastKnownLocation(provider);

updateWithNewLocation(location);

locationManager.requestLocationUpdates(provider, 2000, 10,

locationListener);

}

private final LocationListener locationListener = new LocationListener() {

public void onLocationChanged(Location location) {

updateWithNewLocation(location);

}

public void onProviderDisabled(String provider){

updateWithNewLocation(null);

}

public void onProviderEnabled(String provider){ }

public void onStatusChanged(String provider, int status,

接上页

Bundle extras){ }

};

private void updateWithNewLocation(Location location) {

String latLongString;

TextView myLocationText;

myLocationText = (TextView)findViewById(R.id.myLocationText);

if (location != null) {

double lat = location.getLatitude();

double lng = location.getLongitude();

latLongString = "纬度:" + lat + " 经度:" + lng;

} else {

latLongString = "无法获取地理信息";

}

myLocationText.setText("您当前的位置是: " +

latLongString);

}

}