关于android:位置服务与地图应用-Andorid开发期末复习1

让程序提供位置服务-> 如何获取LocationManager?

通过调用android.app.Activity.getSystemService()函数

String serviceString = Context.LOCATION_SERVICE;LocationManager locationManager =(LocationManager)getSystemService(serviceString);

获取LocationManager后指定其定位办法

String provider = LocationManager.GPS_PROVIDER;Location location = locationManager.getLastKnownLocation(provider);

调用location中的办法

double lat = location.getLatitude();double lng = location.getLongitude();

监督地位变动

//参数阐明：//provider:定位办法//2000:残剩地位扭转事件的工夫距离//0:间隔条件//locationListener:回调函数locationManager.requestLocationUpdates(provider, 2000, 0, locationListener);//locationListener的实现private final LocationListener locationListener = new LocationListener(){     @Override     public void onLocationChanged(Location location) {         getLocationInfo(location);     }     @Override     public void onProviderDisabled(String provider) {         getLocationInfo(null);     }     @Override     public void onProviderEnabled(String provider) {         getLocationInfo(null);     }     @Override     public void onStatusChanged(String provider, int status, Bundle extras) {     }

最初要使GPS定位失效须要在AndroidManifest.xml退出用户许可

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>