Android—定位

 public class MainActivity extends AppCompatActivity implements View.OnClickListener {
     private Button bt_main_checkin;
     private  Toolbar toolbar;
     private TextView tv_main_test;

     private LocationManager mLocationManager;

     private static final int TEN_SECONDS = 10000;
     private static final int TEN_METERS = 10;
     private static final int TWO_MINUTES = 1000 * 60 * 2;

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         initView();
         bt_main_checkin.setOnClickListener(this);
         setSupportActionBar(toolbar);
         mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
         Location LatLng = setup();
 //        Toast.makeText(this, LatLng.getLatitude() + "|" + LatLng.getLongitude(), Toast.LENGTH_SHORT).show();
         tv_main_test.setText(LatLng.getLatitude() + "|" + LatLng.getLongitude());
     }

     private void initView() {
         toolbar = (Toolbar) findViewById(R.id.toolbar);
         bt_main_checkin = (Button) findViewById(R.id.bt_main_checkin);
         tv_main_test= (TextView) findViewById(R.id.tv_main_test);
     }

     @Override
     protected void onResume() {
         super.onResume();
         setup();
     }

     @Override
     protected void onStop() {
         super.onStop();
         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
             return;
         }
         mLocationManager.removeUpdates(listener);
     }

     @Override
     protected void onStart() {
         super.onStart();
         LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
         final boolean gpsenable = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
         if (!gpsenable) {
             new EnableGpsDialogFragment().show(getFragmentManager(), "enableGpsDialog");
         }
     }

     @Override
     public void onClick(View v) {

     }
     private Location setup() {
         Location gpsLocation = null;
         Location networkLocation = null;
         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
             // TODO: Consider calling
             new EnableGpsDialogFragment().show(getFragmentManager(), "enableGpsDialog");
             new EnableNetworkDialogFragment().show(getFragmentManager(), "enableNetworkDialog");
             return null;
         }
         mLocationManager.removeUpdates(listener);
         gpsLocation = requestUpdatesFromProvider(LocationManager.GPS_PROVIDER, R.string.not_support_gps);
         networkLocation = requestUpdatesFromProvider(LocationManager.NETWORK_PROVIDER, R.string.not_support_network);
         if (gpsLocation != null && networkLocation != null) {
             return getBetterLocation(gpsLocation, networkLocation);
         } else if (gpsLocation != null) {
             return gpsLocation;
         } else if (networkLocation != null) {
             return networkLocation;
         }
         return null;
     }

     private Location requestUpdatesFromProvider(final String provider, final int errorResId) {
         Location location = null;
         if (mLocationManager.isProviderEnabled(provider)) {
             if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                 // TODO: Consider calling
                 return null;
             }
             mLocationManager.requestLocationUpdates(provider, TEN_SECONDS, TEN_METERS, listener);
             location = mLocationManager.getLastKnownLocation(provider);
         } else {
             Toast.makeText(this, errorResId, Toast.LENGTH_SHORT).show();
         }
         return location;
     }

     private final LocationListener listener = new LocationListener() {
         @Override
         public void onLocationChanged(Location location) {
             // TODO: 2016/3/23 updata ui in it

         }

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

         }

         @Override
         public void onProviderEnabled(String provider) {

         }

         @Override
         public void onProviderDisabled(String provider) {

         }
     };

     protected Location getBetterLocation(Location newLocation, Location currentBestLocation) {
         if (currentBestLocation == null) {
             // A new location is always better than no location
             return newLocation;
         }
         // If it's been more than two minutes since the current location, use the new location
         // because the user has likely moved.
         long timeDelta = newLocation.getTime() - currentBestLocation.getTime();
         boolean isSignficantlyNewer = timeDelta > TWO_MINUTES;
         boolean isSignficantlyOlder = timeDelta < -TWO_MINUTES;
         boolean isNewer = timeDelta > 0;
         if (isSignficantlyNewer) {
             return newLocation;
         } else if (isSignficantlyOlder) {
             return currentBestLocation;
         }
         // Determine location quality using a combination of timeliness and accuracy
         int accuracyDelta = (int) (newLocation.getAccuracy() - currentBestLocation.getAccuracy());
         boolean isLessAccurate = accuracyDelta > 0;
         boolean isMoreAccurate = accuracyDelta < 0;
         boolean isSignificantlyLessAccurate = accuracyDelta > 200;

         boolean isFromSameProvider = isSameProvider(newLocation.getProvider(),
                 currentBestLocation.getProvider());
         if (isMoreAccurate) {
             return newLocation;
         } else if (isNewer && !isLessAccurate) {
             return newLocation;
         } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
             return newLocation;
         }
         return currentBestLocation;
     }

     /**
      * Checks whether two providers are the same
      */
     private boolean isSameProvider(String provider1, String provider2) {
         if (provider1 == null) {
             return provider2 == null;
         }
         return provider1.equals(provider2);
     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         // Inflate the menu; this adds items to the action bar if it is present.
         getMenuInflater().inflate(R.menu.menu_main, menu);
         return true;
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         // Handle action bar item clicks here. The action bar will
         // automatically handle clicks on the Home/Up button, so long
         // as you specify a parent activity in AndroidManifest.xml.
         int id = item.getItemId();
         switch (id){
             case R.id.action_settings:
                 break;
             case R.id.action_register:
                 break;
             default:
                 break;
         }
         //noinspection SimplifiableIfStatement
 //        if (id == R.id.action_settings) {
 //            return true;
 //        }

         return true;
     }

 }

详细见官网