Andriod获取当前位置的经纬度

package com.example.testlocation;

import java.util.List;

import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {
	
	private TextView tv_name;  
	private LocationManager locationManager;
	private String locationProvider;  
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		tv_name = (TextView) findViewById(R.id.tv_name);
		
		locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);  
	    //获取所有可用的位置提供器  
	    List providers = locationManager.getProviders(true);  
	    if(providers.contains(LocationManager.GPS_PROVIDER)){  
	        //如果是GPS  
	        locationProvider = LocationManager.GPS_PROVIDER;  
	    }else if(providers.contains(LocationManager.NETWORK_PROVIDER)){  
	        //如果是Network  
	        locationProvider = LocationManager.NETWORK_PROVIDER;  
	    }else{  
	        Toast.makeText(this, "没有可用的位置提供器", Toast.LENGTH_SHORT).show();  
	        return ;  
	    }  
	    //获取Location  
	    Location location = locationManager.getLastKnownLocation(locationProvider);  
	    if(location!=null){  
	        //不为空,显示地理位置经纬度  
	    	String locationStr = "维度：" + location.getLatitude() +"\n" + "经度：" + location.getLongitude();  
	    }  
	    //监视地理位置变化  
	    locationManager.requestLocationUpdates(locationProvider, 3000, 1, locationListener);  
	}

	/** 
	 * 显示地理位置经度和纬度信息 
	 * @param location 
	 */  
	private void showLocation(Location location){  
	    String locationStr = "维度：" + location.getLatitude() +"\n" + "经度：" + location.getLongitude();  
	    tv_name.setText(locationStr);
	}  

	 /** 
	 * LocationListern监听器 
	 * 参数：地理位置提供器、监听位置变化的时间间隔、位置变化的距离间隔、LocationListener监听器 
	 */  
	LocationListener locationListener =  new LocationListener() {  
	      
	    @Override  
	    public void onStatusChanged(String provider, int status, Bundle arg2) {  
	    }  
	      
	    @Override  
	    public void onProviderEnabled(String provider) {  
	    }  
	      
	    @Override  
	    public void onProviderDisabled(String provider) {  
	    }  
	      
	    @Override  
	    public void onLocationChanged(Location location) {  
	        //如果位置发生变化,重新显示  
	        showLocation(location);  
	    }  
	};
	
	@Override  
	protected void onDestroy() {  
	    super.onDestroy();  
	    if(locationManager!=null){  
	        //移除监听器  
	        locationManager.removeUpdates(locationListener);  
	    }  
	} 
}