获得位置信息 android
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. */
@Override
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
@Override
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);
}
@Override
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;
}
@Override
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;
}
@Override
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);
}
}
@Override
public void onProviderDisabled(String provider) {
System.out.println("onProviderDisabled");
}
@Override
public void onProviderEnabled(String provider) {
System.out.println("onProviderEnabled");
}
@Override
public void onStatusChanged(String provider, int status,
Bundle extras) {
System.out.println("onStatusChanged");
}
}
}
成功执行 。