package com.google.zxing.client.android.map.google;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.widget.Toast;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.zxing.client.android.R;
public class GMapViewDemo extends MapActivity {
private MapView mapView;
private MapController mapController;
private String provider;
private LocationManager locationManager;
private LocationListener locationListener;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.gmapviewdemo);
mapView = (MapView) findViewById(R.id.gmapView);
mapView.setBuiltInZoomControls(true);
mapController = mapView.getController();
mapController.setZoom(12);
openGPSSettings() ;
getLocation();
}
private void openGPSSettings() {
LocationManager alm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
if (alm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT).show();
return;
}
else{
Toast.makeText(this, "请开启GPS!", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
startActivityForResult(intent,0); //此为设置完成后返回到获取界面
}
}
private void getLocation() {
// 获取位置管理服务
String serviceName = Context.LOCATION_SERVICE;
locationManager = (LocationManager) this.getSystemService(serviceName);
//locationManager.setTestProviderEnabled("gps", true);
// 查找到服务信息
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
// 高精度
criteria.setAltitudeRequired(false);
criteria.setBearingRequired(false);
criteria.setCostAllowed(true);
criteria.setPowerRequirement(Criteria.POWER_LOW);
// 低功耗
provider = locationManager.getBestProvider(criteria, true);
locationListener=new LocationListener(){
public void onLocationChanged(Location location){
updateToNewLocation(location);
//locationManager.removeUpdates(this);
//locationManager.setTestProviderEnabled(provider, false);
}
public void onProviderDisabled(String provider){
updateToNewLocation(null);
}
public void onProviderEnabled(String provider){
}
public void onStatusChanged(String provider,int status,Bundle extras){
}
};
// 设置监听器，自动更新的最小时间为间隔N秒(1秒为1*1000，这样写主要为了方便)或最小位移变化超过N米
//locationManager.requestLocationUpdates(provider, 5*1000, 0,locationListener);
//locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000,0,locationListener);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000,0,locationListener);
private void updateToNewLocation(Location location) {
if (location != null) {
double latitude = location.getLatitude();
double longitude= location.getLongitude();
Toast.makeText(this, "维度：" + latitude+ "n经度" + longitude, Toast.LENGTH_SHORT).show();
GeoPoint p = new GeoPoint((int)location.getLatitude() * 1000000, (int) location.getLongitude() * 1000000);
mapController.animateTo(p);
} else {
Toast.makeText(this, "无法获取地理信息", Toast.LENGTH_SHORT).show();
}
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
@Override
protected void onDestroy(){
locationManager.removeUpdates(locationListener);
//locationManager.setTestProviderEnabled(provider, false);
super.onDestroy();
}
}
