分享程序员开发的那些事...
更新时间：2023-01-27 14:43:35
我已经创建了一个带有分步说明的小应用程序来获取当前位置的 GPS 坐标.
I have created a small application with step by step description to get current location's GPS coordinates.
完整的示例源代码在获取当前位置坐标、城市名称 - 在 Android 中.
Complete example source code is in Get Current Location coordinates , City name - in Android.
看看它是如何工作的:
我们需要做的就是在清单文件中添加这个权限:
All we need to do is add this permission in the manifest file:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
然后像这样创建一个 LocationManager 实例:
And create a LocationManager instance like this:
LocationManager locationManager = (LocationManager)
getSystemService(Context.LOCATION_SERVICE);
检查 GPS 是否启用.
Check if GPS is enabled or not.
然后实现LocationListener并获取坐标:
And then implement LocationListener and get coordinates:
LocationListener locationListener = new MyLocationListener();
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 5000, 10, locationListener);
这是执行此操作的示例代码
Here is the sample code to do so
/*---------- Listener class to get coordinates ------------- */
private class MyLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location loc) {
editLocation.setText("");
pb.setVisibility(View.INVISIBLE);
Toast.makeText(
getBaseContext(),
"Location changed: Lat: " + loc.getLatitude() + " Lng: "
+ loc.getLongitude(), Toast.LENGTH_SHORT).show();
String longitude = "Longitude: " + loc.getLongitude();
Log.v(TAG, longitude);
String latitude = "Latitude: " + loc.getLatitude();
Log.v(TAG, latitude);
/*------- To get city name from coordinates -------- */
String cityName = null;
Geocoder gcd = new Geocoder(getBaseContext(), Locale.getDefault());
List<Address> addresses;
try {
addresses = gcd.getFromLocation(loc.getLatitude(),
loc.getLongitude(), 1);
if (addresses.size() > 0) {
System.out.println(addresses.get(0).getLocality());
cityName = addresses.get(0).getLocality();
}
}
catch (IOException e) {
e.printStackTrace();
}
String s = longitude + "
" + latitude + "
My Current City is: "
+ cityName;
editLocation.setText(s);
}
@Override
public void onProviderDisabled(String provider) {}
@Override
public void onProviderEnabled(String provider) {}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
}