Java tutorial
/* * Copyright 2013-2016 microG Project Team * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.microg.gms.ui; import android.content.Intent; import android.location.Address; import android.location.Geocoder; import android.location.Location; import android.location.LocationManager; import android.os.Build; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.v4.app.ActivityCompat; import android.support.v4.view.MenuItemCompat; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.SearchView; import android.support.v7.widget.Toolbar; import android.text.Html; import android.text.TextUtils; import android.util.Log; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.widget.TextView; import com.google.android.gms.R; import com.google.android.gms.common.api.CommonStatusCodes; import com.google.android.gms.common.api.Status; import com.google.android.gms.location.places.internal.PlaceImpl; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.LatLngBounds; import org.microg.gms.location.LocationConstants; import org.microg.gms.maps.BackendMapView; import org.microg.gms.maps.GmsMapsTypeHelper; import org.microg.safeparcel.SafeParcelUtil; import org.oscim.core.MapPosition; import org.oscim.event.Event; import org.oscim.map.Map; import java.util.List; import java.util.concurrent.atomic.AtomicBoolean; import static android.Manifest.permission.ACCESS_COARSE_LOCATION; import static android.Manifest.permission.ACCESS_FINE_LOCATION; import static android.content.pm.PackageManager.PERMISSION_GRANTED; import static org.microg.gms.location.LocationConstants.EXTRA_PRIMARY_COLOR; import static org.microg.gms.location.LocationConstants.EXTRA_PRIMARY_COLOR_DARK; import static org.microg.gms.maps.GmsMapsTypeHelper.fromLatLngBounds; public class PlacePickerActivity extends AppCompatActivity implements Map.UpdateListener { private static final String TAG = "GmsPlacePicker"; private PlaceImpl place; private BackendMapView mapView; private Intent resultIntent; private AtomicBoolean geocoderInProgress = new AtomicBoolean(false); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); resultIntent = new Intent(); place = new PlaceImpl(); setContentView(R.layout.pick_place); Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowHomeEnabled(true); if (getIntent().hasExtra(EXTRA_PRIMARY_COLOR)) { toolbar.setBackgroundColor(getIntent().getIntExtra(EXTRA_PRIMARY_COLOR, 0)); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) getWindow().setStatusBarColor(getIntent().getIntExtra(EXTRA_PRIMARY_COLOR_DARK, 0)); ((TextView) findViewById(R.id.place_picker_title)) .setTextColor(getIntent().getIntExtra(EXTRA_PRIMARY_COLOR_DARK, 0)); } mapView = (BackendMapView) findViewById(R.id.map); mapView.map().getEventLayer().enableRotation(false); mapView.map().getEventLayer().enableTilt(false); mapView.map().events.bind(this); LatLngBounds latLngBounds = getIntent().getParcelableExtra(LocationConstants.EXTRA_BOUNDS); if (latLngBounds != null) { place.viewport = latLngBounds; MapPosition mp = new MapPosition(); mp.setByBoundingBox(fromLatLngBounds(latLngBounds), mapView.map().getWidth(), mapView.map().getHeight()); mapView.map().getMapPosition(mp); } else { if (ActivityCompat.checkSelfPermission(PlacePickerActivity.this, ACCESS_FINE_LOCATION) != PERMISSION_GRANTED) { ActivityCompat.requestPermissions(PlacePickerActivity.this, new String[] { ACCESS_COARSE_LOCATION, ACCESS_FINE_LOCATION }, 0); } else { updateMapFromLocationManager(); } } findViewById(R.id.place_picker_select).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { resultIntent.putExtra(LocationConstants.EXTRA_STATUS, SafeParcelUtil.asByteArray(new Status(CommonStatusCodes.SUCCESS))); resultIntent.putExtra(LocationConstants.EXTRA_PLACE, SafeParcelUtil.asByteArray(place)); resultIntent.putExtra(LocationConstants.EXTRA_FINAL_BOUNDS, SafeParcelUtil.asByteArray(place.viewport)); setResult(RESULT_OK, resultIntent); finish(); } }); } @SuppressWarnings("MissingPermission") private void updateMapFromLocationManager() { LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE); Location last = null; for (String provider : lm.getAllProviders()) { if (lm.isProviderEnabled(provider)) { Location t = lm.getLastKnownLocation(provider); if (t != null && (last == null || t.getTime() > last.getTime())) { last = t; } } } Log.d(TAG, "Set location to " + last); if (last != null) { mapView.map().setMapPosition(new MapPosition(last.getLatitude(), last.getLongitude(), 4096)); } } @Override public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { if (requestCode == 0) { for (int grantResult : grantResults) { if (grantResult != PERMISSION_GRANTED) return; } updateMapFromLocationManager(); } } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); MenuInflater inflater = getMenuInflater(); inflater.inflate(R.menu.pick_place, menu); SearchView searchView = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.menu_action_search)); // TODO: search return true; } @Override protected void onResume() { super.onResume(); mapView.onResume(); } @Override protected void onPause() { mapView.onPause(); super.onPause(); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == android.R.id.home) { finish(); return true; } return super.onOptionsItemSelected(item); } @Override protected void onDestroy() { super.onDestroy(); } @Override public void onMapEvent(Event event, MapPosition position) { place.viewport = GmsMapsTypeHelper.toLatLngBounds(mapView.map().viewport().getBBox(null, 0)); resultIntent.putExtra(LocationConstants.EXTRA_FINAL_BOUNDS, place.viewport); place.latLng = GmsMapsTypeHelper.toLatLng(position.getGeoPoint()); place.name = ""; place.address = ""; updateInfoText(); if (geocoderInProgress.compareAndSet(false, true)) { new Thread(new Runnable() { @Override public void run() { try { LatLng ll = null; while (ll != place.latLng) { ll = place.latLng; Thread.sleep(1000); } Geocoder geocoder = new Geocoder(PlacePickerActivity.this); List<Address> addresses = geocoder.getFromLocation(place.latLng.latitude, place.latLng.longitude, 1); if (addresses != null && !addresses.isEmpty() && addresses.get(0).getMaxAddressLineIndex() > 0) { Address address = addresses.get(0); StringBuilder sb = new StringBuilder(address.getAddressLine(0)); for (int i = 1; i < address.getMaxAddressLineIndex(); ++i) { if (i == 1 && sb.toString().equals(address.getFeatureName())) { sb = new StringBuilder(address.getAddressLine(i)); continue; } sb.append(", ").append(address.getAddressLine(i)); } if (place.latLng == ll) { place.address = sb.toString(); place.name = address.getFeatureName(); runOnUiThread(new Runnable() { @Override public void run() { updateInfoText(); } }); } } } catch (Exception ignored) { Log.w(TAG, ignored); } finally { geocoderInProgress.lazySet(false); } } }).start(); } } private void updateInfoText() { if (TextUtils.isEmpty(place.address)) { ((TextView) findViewById(R.id.place_picker_info)).setText(getString( R.string.place_picker_location_lat_lng, place.latLng.latitude, place.latLng.longitude)); } else if (TextUtils.isEmpty(place.name)) { ((TextView) findViewById(R.id.place_picker_info)).setText(place.address); } else { ((TextView) findViewById(R.id.place_picker_info)) .setText(Html.fromHtml("<b>" + place.name + "</b>, " + place.address)); } } }