Android AGPS 定位 测试程序
16lz
2021-01-23
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, 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 + "\n经度:" + lng; } else { latLongString = "无法获取地理信息"; } myLocationText.setText("您当前的位置是:\n" + latLongString); } }
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