GpsProvider与NetWorkProvider

package com.location;
//    <uses-permission android:name="android.permission.INTERNET"/>
 
 //  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  
  //<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends Activity {
	Button showGeroInfoBtn;
	TextView showGeroInfoText;
	Button showGcsInfoBtn;
	TextView showGcsInfoText;
    private double latGps;
    private double lonGps;
    private double latNet;
    private double lonNet;   
    Location locationGps;
    Location locationNet;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		//showGeroInfoBtn=(Button) findViewById(R.id.showGeroInfoBtn);
		showGeroInfoText=(TextView) findViewById(R.id.showGcsInfoText);
		showGcsInfoBtn=(Button) findViewById(R.id.showGcsInfoBtn);
		showGcsInfoText=(TextView) findViewById(R.id.showGcsInfoText);
		showGcsInfoBtn.setOnClickListener(new OnClickListener(){

			@Override
			public void onClick(View v) {
				LocationManager locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
			        locationGps=locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
				locationNet=locationManager.getLastKnownLocation(locationManager.NETWORK_PROVIDER);
                               //gps与net同时声明，但系统只会选择一个使用，太不科学了。
				LocationListener locationListenerGps=new LocationListener() {
					
					@Override
					public void onStatusChanged(String provider, int status, Bundle extras) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onProviderEnabled(String provider) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onProviderDisabled(String provider) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onLocationChanged(Location location) {
						// TODO Auto-generated method stub
						locationGps=location;
                                                   //空代码未删。
						latGps=location.getLatitude();
						lonGps=location.getLongitude();
						Log.e("GGGGGGGGG", latGps+"_!!!___!!!_"+lonGps);
					}
				};
				LocationListener locationListenerNet=new LocationListener() {
					
					@Override
					public void onStatusChanged(String provider, int status, Bundle extras) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onProviderEnabled(String provider) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onProviderDisabled(String provider) {
						// TODO Auto-generated method stub
						
					}
					
					@Override
					public void onLocationChanged(Location location) {
						// TODO Auto-generated method stub
						locationNet=location;
						latNet=location.getLatitude();
						lonNet=location.getLongitude();
						Log.e("NNNNNNNNNN", latNet+"_!!!___!!!_"+lonNet);						
					}
				};
				locationManager.requestLocationUpdates(locationManager.GPS_PROVIDER, 1000, 0, locationListenerGps);
				//locationGps=locationManager.getLastKnownLocation(locationManager.GPS_PROVIDER);
				locationManager.requestLocationUpdates(locationManager.NETWORK_PROVIDER, 1000, 0, locationListenerNet);
				//locationNet=locationManager.getLastKnownLocation(locationManager.NETWORK_PROVIDER);
				showGeroInfoText.setText("经度："+latGps+";"+"纬度:"+lonGps+"Gps");
				showGcsInfoText.setText("经度："+latNet+";"+"纬度:"+lonNet+"Net");
				}});
			}
	//屋内手机实测，network得到经纬度，gps没有，看来系统自动选的net。不知道系统是随即选的还是根据信号强弱选的。如果是前者，需要加if语句自己选择，如果是后者，那直接全写交给系统就行。此外，开启后须等待十来秒之后才会更新。
/*
    if(locationGps==null){

    showGcsInfoText.setText("经度："+latNet+";"+"纬度:"+lonNet+"Net");

    }else if(locationNet==null){
 
    showGcsInfoText.setText("经度："+latGps+";"+"纬度:"+lonGps+"Gps");
 
    }
*/
//试过用asynctask处理，但更新Ui时报错，不懂为什么。个人猜测为execute()方法只能执行一次，后来location更新再执行出错。试试handler,如果同样不行，那我的猜测应该是错的。
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

api参考 https://developers.google.com/maps/documentation/geocoding/?hl=zh-CN&csw=1