如何防止GPS更新？

Question

编译以下代码时，出现编译错误：

Error:(154, 47) error: local variable locationListener is accessed from within inner class; needs to be declared final 

在locationListener中的以下一行：

getDistance(locationA,locationListener );
                    lm.removeUpdates(locationListener);

如何阻止GPS更新？

 locationListener = new LocationListener() {
            @Override
            public void onLocationChanged(final Location location) {
                Location net_loc, gps_loc;
                net_loc = location;
                while (net_loc != null) {
                    showCurrentLocation(net_loc);
                    Location locationA = new Location("A");
                    locationA.setLatitude(location.getLatitude());
                    locationA.setLongitude(location.getLongitude());
                    getDistance(locationA,locationListener );
                    lm.removeUpdates(locationListener);
                }

Answer 1

尝试

lm.removeUpdates(this);

而不是

lm.removeUpdates(locationListener);

还有一点要记住，一旦在代码中输入while循环，它就会持续运行直到net_loc==null，所以lm.removeUpdates(locationListener)每次都会调用。