package ziv.locationdemo;
import android.app.Activity;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class LocationDemo extends Activity {
?TextView locationShow = null; ???????// 显示区
?TextView infoTextView = null; ???????// 提示信息显示
?Button locationbutton = null; ???????// 绑定GPS监听按钮
?Button locationbuttonNetwork=null; ??????// 绑定NEWWOR简体按钮
?LocationManager locationManager = null; ????// 定位管理
?public LocationListener locationListener_GPS = null; ?// 监听gps返回数据
?public LocationListener locationListener_NETWORK=null;
?/** Called when the activity is first created. */
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?public void onCreate(Bundle savedInstanceState) {
??super.onCreate(savedInstanceState);
??setContentView(R.layout.main);
??// 实例化显示区
??locationShow = (TextView) findViewById(R.id.locationShow);
??// 在视图层提出提示信息文本框
??infoTextView = (TextView) findViewById(R.id.infoTextView);
??// 实例化绑定监听按钮
??locationbutton = (Button) findViewById(R.id.locationbutton);
??locationbuttonNetwork = (Button) findViewById(R.id.locationbuttonNetwork);
??
??// 获得定位管理类
??locationManager = (LocationManager) LocationDemo.this
????.getSystemService(Context.LOCATION_SERVICE);
??// 实例化监听对象变量
??locationListener_GPS = new LocationListenerSelf("GPS");
??locationListener_NETWORK=new LocationListenerSelf("NETWORK");
??locationbuttonNetwork.setOnClickListener(new OnClickListenerButton(LocationManager.NETWORK_PROVIDER));
??// 监听单击按钮
??locationbutton.setOnClickListener(new OnClickListenerButton(LocationManager.GPS_PROVIDER));
?}
?// 执行就绪
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?protected void onResume() {
??// 在就绪执行中，自动选择位置信息提供者，且触发监听
??if (locationManager != null) {
???// 实例化查询条件
???Criteria criteria = new Criteria();
???criteria.setAccuracy(Criteria.ACCURACY_FINE);// 高精度
???// 获得定位服务提供者名称
???String provider = locationManager.getBestProvider(criteria, true);
???
???//locationManager.setTestProviderEnabled("gps", true);
???//criteria.setCostAllowed(true);
???// 自动位置变化监听
???if("gps".equals(provider)){
????
????locationManager.requestLocationUpdates(provider, 2000, 0,
??????locationListener_GPS);
???}else{
????locationManager.requestLocationUpdates(provider, 2000, 0,
??????locationListener_NETWORK);
????
???}
???
???// 获得最后的位置信息
???Location location = locationManager.getLastKnownLocation(provider);
???// 显示坐标信息
???if (location != null) {
????showLocation(location,provider);
???} else {
????locationShow.append(" onResume 没获得到定位\n");
????infoTextView.setText("提供者:"+provider);
???}
??}
??super.onResume();
?}
?/**
? * 显示location 信息
? *
? * @param location
? */
?private void showLocation(Location location,String provider) {
??locationShow.append("经度：" + location.getLongitude() + "\n" + "纬度："
????+ location.getLatitude() + "\n");
??infoTextView.setText("提供者:"+provider);
?}
?
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?protected void onPause() {
??System.out.println("onPause");
??if (locationManager != null) {
???locationManager.removeUpdates(locationListener_GPS);
???locationManager.removeUpdates(locationListener_NETWORK);
??}
??super.onPause();
?}
?private class OnClickListenerButton implements OnClickListener{
??String provider="";
??public OnClickListenerButton(){
???super();
??}
??public OnClickListenerButton(String provider){
???super();
???this.provider=provider;
??}
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??public void onClick(View v) {
?
???Location location = locationManager
?????.getLastKnownLocation(provider);
???// 显示坐标信息
???if (location != null) {
????showLocation(location,provider);
???} else {
????locationShow.append(" 没获得到定位\n");
????infoTextView.setText("提供者:"+provider+";是否可用："+locationManager.isProviderEnabled(provider));
???}
???//启动gps监听
???if(locationManager.GPS_PROVIDER.equals(provider)){
????
????locationManager.requestLocationUpdates(
??????provider, 1000, 0,
??????locationListener_GPS);
???}else{
????locationManager.requestLocationUpdates(
??????provider, 1000, 0,
??????locationListener_NETWORK);
???}
???
??}
?
?}
?/**
? * 位置变化监听
? * @author ziv
? *
? */
?private class LocationListenerSelf implements LocationListener{
??String provider="null";
??public LocationListenerSelf(){
???
??}
??public LocationListenerSelf(String provider){
???this.provider=provider;
??}
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??public void onLocationChanged(Location location) {
???if (location != null) {
????showLocation(location,provider);
???} else {
????locationShow.append(" location listener 没获得到定位 \n");
????infoTextView.setText("提供者:"+provider);
???}
??}
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??public void onProviderDisabled(String provider) {
???System.out.println("onProviderDisabled");
??}
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??public void onProviderEnabled(String provider) {
???System.out.println("onProviderEnabled");
??}
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??public void onStatusChanged(String provider, int status,
????Bundle extras) {
???System.out.println("onStatusChanged");
??}
?
?}
}
?
?
成功执行 。