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() {@Overridepublic 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() {@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {// TODO Auto-generated method stub}@Overridepublic void onProviderEnabled(String provider) {// TODO Auto-generated method stub//updateView(manager.getLastKnownLocation(provider));}@Overridepublic void onProviderDisabled(String provider) {// TODO Auto-generated method stubupdateView(null);}@Overridepublic 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());    }}

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