今天在Android项目中要实现一个通过GPS或NetWork来获取当前移动终端设备的经纬度功能。要实现该功能要用到Android Framework 中的 LocationManager 类。下面我就直接贴上主要的代码说明如何实现通过GPS或NetWork来获取实时位置的经纬度。
private double latitude=0.0; private double longitude =0.0; LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE); if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){ Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); if(location != null){ latitude = location.getLatitude(); longitude = location.getLongitude(); } }else{ LocationListener locationListener = new LocationListener() { // Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数 @Override public void onStatusChanged(String provider, int status, Bundle extras) { } // Provider被enable时触发此函数,比如GPS被打开 @Override public void onProviderEnabled(String provider) { } // Provider被disable时触发此函数,比如GPS被关闭 @Override public void onProviderDisabled(String provider) { } //当坐标改变时触发此函数,如果Provider传进相同的坐标,它就不会被触发 @Override public void onLocationChanged(Location location) { if (location != null) { Log.e("Map", "Location changed : Lat: " + location.getLatitude() + " Lng: " + location.getLongitude()); } } }; locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,1000, 0,locationListener); Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); if(location != null){ latitude = location.getLatitude(); //经度 longitude = location.getLongitude(); //纬度 } }
<!-- 连接互联网Internet权限 --> <uses-permission android:name="android.permission.INTERNET" /> <!-- GPS定位权限 --> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />