问题描述
如何使用定位工具在android中获取移动设备的当前纬度和经度?
How do I get the current Latitude and Longitude of the mobile device in android using location tools?
推荐答案
使用 LocationManager
.
LocationManager lm = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
Location location = lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
double longitude = location.getLongitude();
double latitude = location.getLatitude();
对 getLastKnownLocation()
的调用不会阻塞 - 这意味着如果当前没有可用位置,它将返回 null
- 所以你可能想看看将 LocationListener
传递给 requestLocationUpdates()
方法,它将为您提供位置的异步更新.
The call to getLastKnownLocation()
doesn't block - which means it will return null
if no position is currently available - so you probably want to have a look at passing a LocationListener
to the requestLocationUpdates()
method instead, which will give you asynchronous updates of your location.
private final LocationListener locationListener = new LocationListener() {
public void onLocationChanged(Location location) {
longitude = location.getLongitude();
latitude = location.getLatitude();
}
}
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 2000, 10, locationListener);
您需要为您的应用程序提供 ACCESS_FINE_LOCATION
权限 如果你想使用 GPS.
You'll need to give your application the ACCESS_FINE_LOCATION
permission if you want to use GPS.
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
您可能还想添加 ACCESS_COARSE_LOCATION
当 GPS 不可用时的权限 并使用 getBestProvider()
方法.
You may also want to add the ACCESS_COARSE_LOCATION
permission for when GPS isn't available and select your location provider with the getBestProvider()
method.
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