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 [html] view plaincopy
- <uses-permission android:name="android.permission.INTERNET"/>
- <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
主activity [java] view plaincopy
- 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
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