android网络-GPS获取定位信息

设置每60秒，每移动十米向LocationProvider获取一次GPS的定位信息

当LocationProvider可用，不可用或定位信息改变时，调用updateView，更新显示

程序效果：按下按钮后，按要求更新定位信息的显示

DDMS的Emulator Control面板中Manual输入经度和纬度值，单击“send”,即可向模拟器发出GPS定位信息(模拟手机中GPS开启状态下自动获取定位信息)

先加上两个权限，第二个为获取定位信息的权限

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

主activity

package com.song;

import android.app.Activity;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class C613_Googlemap2Activity extends Activity {
    /** Called when the activity is first created. */
	Button button;
	TextView textview;
	LocationManager manager;
	Location location;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        textview=(TextView)findViewById(R.id.textview);
        button=(Button)findViewById(R.id.button);
        manager=(LocationManager)getSystemService(LOCATION_SERVICE);
        //从GPS_PROVIDER获取最近的定位信息
        location=manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        updateView(location);
        //判断GPS是否可用
        System.out.println("state="+manager.isProviderEnabled(LocationManager.GPS_PROVIDER));
        button.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				//设置每60秒，每移动十米向LocationProvider获取一次GPS的定位信息
				//当LocationProvider可用，不可用或定位信息改变时，调用updateView,更新显示
				manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 10, 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
						//
						updateView(manager.getLastKnownLocation(provider));
					}
					
					@Override
					public void onProviderDisabled(String provider) {
						// TODO Auto-generated method stub
						updateView(null);
					}
					
					@Override
					public void onLocationChanged(Location location) {
						// TODO Auto-generated method stub
						//location为变化完的新位置，更新显示
						updateView(location);
					}
				});
			}
		});
    }
    //更新显示内容的方法
    public void updateView(Location location)
    {
    	StringBuffer buffer=new StringBuffer();
    	if(location==null)
    	{
    		textview.setText("未获得服务");
    		return;
    	}
    	buffer.append("经度："+location.getLongitude()+"\n");
    	buffer.append("纬度："+location.getLatitude()+"\n");
    	buffer.append("高度："+location.getAltitude()+"\n");
    	buffer.append("速度："+location.getSpeed()+"\n");
    	buffer.append("方向："+location.getBearing()+"\n");
    	textview.setText(buffer.toString());
    }
}

显示效果