Question

我使用下面的代码定期检查一段距离后的位置变化。但onLocationChanged从未打过电话。

拥有权限的Android Manifiest文件：

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


locationListener = new LocationListener() {

        @Override
        public void onStatusChanged(String provider, int status,
                Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
            Toast.makeText(MainActivity1.this,
                    "Provider enabled: " + provider, Toast.LENGTH_SHORT)
                    .show();
        }

        @Override
        public void onProviderDisabled(String provider) {
            Toast.makeText(MainActivity1.this,
                    "Provider disabled: " + provider, Toast.LENGTH_SHORT)
                    .show();
        }

        @Override
        public void onLocationChanged(Location location) {
            Toast.makeText(MainActivity1.this, "onLocationChanged",
                    Toast.LENGTH_SHORT).show();

        }


    };

locationManager = (LocationManager) this
            .getSystemService(Context.LOCATION_SERVICE);

    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
            0,10, locationListener);

Answer 1

检查您当前的位置是否为null。＆安培;然后调用onlocationchanged（），如果它在您的活动或服务中为null。

private Location location;
if (location != null) { 
            mCurrentLoc.onLocationChanged(location);
        }

Answer 2

你只需改变： -

locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,
                    0,10, (android.location.LocationListener) this);

那就是它。

android - onLocationChanged没有调用行程距离

2 个答案: