Android上使用Google Map 定位，androidmap

Android上使用Google Map 定位，androidmap

<无详细内容>

1.[Java]代码

package com.google.zxing.client.android.map.google;

import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.widget.Toast;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;

import com.google.zxing.client.android.R;


public class GMapViewDemo extends MapActivity {
	


	private MapView mapView;
	private MapController mapController;
	private String provider;
	private LocationManager locationManager;
	private LocationListener locationListener;


    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.gmapviewdemo);
        mapView = (MapView) findViewById(R.id.gmapView);
		mapView.setBuiltInZoomControls(true);
		
		mapController = mapView.getController();
		mapController.setZoom(12);
		openGPSSettings() ;
		getLocation();
    }
 
   
    private void openGPSSettings() {
    	LocationManager alm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
    	if (alm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
    		Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT).show();
    		return;
    	}
    	else{
	    	Toast.makeText(this, "请开启GPS！", Toast.LENGTH_SHORT).show();
	    	Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
	    	startActivityForResult(intent,0); //此为设置完成后返回到获取界面    
    	}
    }
    
    private void getLocation()    {
    	// 获取位置管理服务
        String serviceName = Context.LOCATION_SERVICE;
    	locationManager = (LocationManager) this.getSystemService(serviceName);
    	//locationManager.setTestProviderEnabled("gps", true);
    	
    	// 查找到服务信息
    	Criteria criteria = new Criteria();
    	criteria.setAccuracy(Criteria.ACCURACY_FINE);
    	// 高精度
    	criteria.setAltitudeRequired(false);
    	criteria.setBearingRequired(false);
    	criteria.setCostAllowed(true); 
    	criteria.setPowerRequirement(Criteria.POWER_LOW);
    	// 低功耗
    		
    	provider = locationManager.getBestProvider(criteria, true);
    	
    	
    	locationListener=new LocationListener(){
        	public void onLocationChanged(Location location){
        		updateToNewLocation(location);
        		//locationManager.removeUpdates(this);
        		//locationManager.setTestProviderEnabled(provider, false);
        	}
        	
        	public void onProviderDisabled(String provider){
        		updateToNewLocation(null);
        	}
        	
        	public void onProviderEnabled(String provider){	
        		
        	}
        	public void onStatusChanged(String provider,int status,Bundle extras){
        		
        	}
        };
        
    	// 设置监听器，自动更新的最小时间为间隔N秒(1秒为1*1000，这样写主要为了方便)或最小位移变化超过N米 
    	//locationManager.requestLocationUpdates(provider, 5*1000, 0,locationListener);
        //locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000,0,locationListener);
          locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000,0,locationListener);
        
    }

    

    
    
    private void updateToNewLocation(Location location) {
    	if (location != null) {
    		double  latitude = location.getLatitude(); 
    		double longitude= location.getLongitude();
    		Toast.makeText(this, "维度：" +  latitude+ "\n经度" + longitude, Toast.LENGTH_SHORT).show();
    		
    		GeoPoint p = new GeoPoint((int)location.getLatitude() * 1000000, (int) location.getLongitude() * 1000000);
    		mapController.animateTo(p);

    	} else {
    		Toast.makeText(this, "无法获取地理信息", Toast.LENGTH_SHORT).show();
    	}
    }
    
	@Override
	protected boolean isRouteDisplayed() {
		// TODO Auto-generated method stub
		return false;
	}
	
	@Override
	protected void onDestroy(){
		locationManager.removeUpdates(locationListener);
		//locationManager.setTestProviderEnabled(provider, false);
		super.onDestroy();
	}
	
}