Android--监听GPS开启和关闭

关键代码如下

getContentResolver()
            .registerContentObserver(
                    Settings.Secure
                            .getUriFor(Settings.System.LOCATION_PROVIDERS_ALLOWED),
                    false , mGpsMonitor);

完整的代码如下：

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public class MyActivity extends Activity { private final ContentObserver mGpsMonitor = new ContentObserver( null ) { @Override public void onChange( boolean selfChange) { super .onChange(selfChange); boolean enabled = mLocationManager .isProviderEnabled(LocationManager.GPS_PROVIDER); Log.i ( "gps ： " + enabled); } }; private LocationManager mLocationManager; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); mLocationManager = (LocationManager) getSystemService(LOCATION_SERVICE); } protected void onStart() { getContentResolver() .registerContentObserver( Settings.Secure .getUriFor(Settings.Secure.LOCATION_PROVIDERS_ALLOWED), false , mGpsMonitor); }; @Override protected void onStop() { super .onStop(); getContentResolver().unregisterContentObserver(mGpsMonitor); } }