Java tutorial
/* * Licensed Materials - Property of IBM * Copyright IBM Corporation 2015. All Rights Reserved. */ package com.ibm.mil.readyapps.telco.hotspots; import android.graphics.Point; import android.location.Geocoder; import android.location.Location; import android.location.LocationManager; import android.os.Bundle; import android.support.design.widget.FloatingActionButton; import android.support.v4.view.GestureDetectorCompat; import android.support.v4.widget.NestedScrollView; import android.support.v7.app.AppCompatActivity; import android.support.v7.widget.Toolbar; import android.text.SpannableString; import android.text.Spanned; import android.text.style.ForegroundColorSpan; import android.text.style.RelativeSizeSpan; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.widget.LinearLayout; import android.widget.TextView; import com.google.android.gms.maps.CameraUpdateFactory; import com.google.android.gms.maps.GoogleMap; import com.google.android.gms.maps.OnMapReadyCallback; import com.google.android.gms.maps.SupportMapFragment; import com.google.android.gms.maps.model.BitmapDescriptor; import com.google.android.gms.maps.model.BitmapDescriptorFactory; import com.google.android.gms.maps.model.LatLng; import com.google.android.gms.maps.model.Marker; import com.google.android.gms.maps.model.MarkerOptions; import com.ibm.mil.readyapps.telco.R; import com.ibm.mil.readyapps.telco.analytics.GestureListener; import com.ibm.mil.readyapps.telco.utils.JsonUtils; import com.ibm.mil.readyapps.telco.utils.MapUtils; import com.ibm.mil.readyapps.telco.utils.RxUtils; import com.ibm.mil.readyapps.telco.utils.Utils; import com.lsjwzh.widget.materialloadingprogressbar.CircleProgressBar; import java.text.DecimalFormat; import java.util.List; import java.util.Locale; import butterknife.ButterKnife; import butterknife.Bind; import butterknife.OnClick; import rx.Observable; import rx.functions.Action1; import rx.subjects.PublishSubject; public class HotSpotActivity extends AppCompatActivity implements HotSpotView, OnMapReadyCallback { private static final LatLng DEFAULT_LOCATION = new LatLng(30.398974, -97.712885); private static final DecimalFormat distanceFormatter = new DecimalFormat("0.0"); private GestureDetectorCompat detector; @Bind(R.id.toolbar) Toolbar toolbar; @Bind(R.id.nested_scroll_view) NestedScrollView nestedScrollView; @Bind(R.id.map_area) View mapArea; @Bind(R.id.map_touchevent_capture_view) View mapTouchEventCaptureView; @Bind(R.id.content_area) View contentArea; @Bind(R.id.progress_bar) CircleProgressBar progressBar; @Bind(R.id.fab) FloatingActionButton fab; @Bind(R.id.hotspot_name) TextView hotSpotName; @Bind(R.id.verification_status) TextView verificationStatus; @Bind(R.id.hotspot_distance) TextView hotspotDistance; @Bind(R.id.address_line1) TextView addressLine1; @Bind(R.id.address_line2) TextView addressLine2; @Bind(R.id.download_speed) TextView downloadSpeed; @Bind(R.id.sign_in_requirement) TextView signInRequirement; @Bind(R.id.connection_count) TextView connectionCount; private GoogleMap map; private HotSpot currentHotSpot; private Marker currentMarker; private Marker userMarker; private HotSpotPresenter presenter; private BitmapDescriptor activePin; private BitmapDescriptor defaultPin; private static SpannableString spanSuffix(String text, String suffix, Object... spans) { String fullText = text + " " + suffix; int startIndex = fullText.indexOf(suffix); int endIndex = fullText.length(); return createSpan(fullText, startIndex, endIndex, spans); } private static SpannableString createSpan(String text, int start, int stop, Object... spans) { SpannableString spannableString = new SpannableString(text); for (Object span : spans) { spannableString.setSpan(span, start, stop, Spanned.SPAN_INCLUSIVE_EXCLUSIVE); } return spannableString; } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_hot_spot); ButterKnife.bind(this); detector = new GestureDetectorCompat(this, new GestureListener()); presenter = new HotSpotPresenterImpl(this, new HotSpotModelImpl()); setSupportActionBar(toolbar); assert getSupportActionBar() != null; getSupportActionBar().setDisplayHomeAsUpEnabled(true); getSupportActionBar().setDisplayShowTitleEnabled(false); progressBar.setColorSchemeColors(R.color.dark_indigo); // make map area 1/3 of available screen size Point screenSize = new Point(); getWindowManager().getDefaultDisplay().getSize(screenSize); mapArea.setLayoutParams( new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, screenSize.y / 3)); // prevent nested scroll view from scrolling up and down when gesture is performed on map mapTouchEventCaptureView.setOnTouchListener(new View.OnTouchListener() { @Override public boolean onTouch(View view, MotionEvent motionEvent) { switch (motionEvent.getAction()) { case MotionEvent.ACTION_UP: case MotionEvent.ACTION_DOWN: nestedScrollView.requestDisallowInterceptTouchEvent(true); return false; default: return true; } } }); SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager() .findFragmentById(R.id.map); mapFragment.getMapAsync(this); } @Override public void onMapReady(GoogleMap map) { this.map = map; activePin = BitmapDescriptorFactory.fromResource(R.drawable.pin); defaultPin = BitmapDescriptorFactory.fromResource(R.drawable.dot); map.setMyLocationEnabled(false); map.getUiSettings().setMyLocationButtonEnabled(false); map.getUiSettings().setMapToolbarEnabled(false); map.getUiSettings().setCompassEnabled(false); // have presenter watch for marker clicks final PublishSubject<LatLng> markerPublisher = PublishSubject.create(); presenter.watchMarkerClick(markerPublisher); map.setOnMarkerClickListener(new GoogleMap.OnMarkerClickListener() { @Override public boolean onMarkerClick(Marker marker) { // define no behavior for clicking user marker if (marker.getPosition().equals(userMarker.getPosition())) { return true; } // notify subscriber (presenter) that a new marker was selected // this will cause the presenter to fetch the detailed data for the hotspot markerPublisher.onNext(marker.getPosition()); // reset marker icon to dot if (currentMarker != null) { currentMarker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.dot)); currentMarker.setAnchor(0.5f, 0.5f); } marker.setIcon(BitmapDescriptorFactory.fromResource(R.drawable.pin)); marker.setAnchor(0.5f, 1.0f); currentMarker = marker; return false; } }); Location userLocation = initUserMarker(); if (Utils.isConnected(this)) { useOnlineMode(userLocation); } else { useOfflineMode(userLocation, null); } } private void useOnlineMode(final Location userLocation) { final Geocoder geocoder = new Geocoder(this, Locale.getDefault()); presenter.getOnlineHotSpots(geocoder, userLocation).compose(hotSpotTransformer()).subscribe(hotSpotOnNext(), new Action1<Throwable>() { @Override public void call(Throwable throwable) { useOfflineMode(userLocation, geocoder); } }); } private void useOfflineMode(Location userLocation, Geocoder geocoder) { String json = JsonUtils.parseJsonFile(this, "offline_hotspots.json"); presenter.getOfflineHotSpots(json, geocoder, userLocation).compose(hotSpotTransformer()) .subscribe(hotSpotOnNext()); } private Observable.Transformer<HotSpot, List<HotSpot>> hotSpotTransformer() { return new Observable.Transformer<HotSpot, List<HotSpot>>() { @Override public Observable<List<HotSpot>> call(Observable<HotSpot> observable) { return observable.toList().compose(RxUtils.<List<HotSpot>>showBackgroundWork()); } }; } private Action1<List<HotSpot>> hotSpotOnNext() { return new Action1<List<HotSpot>>() { @Override public void call(List<HotSpot> hotSpots) { displayHotSpots(hotSpots); } }; } private Location initUserMarker() { LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); Location userLocation = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); LatLng userPosition = DEFAULT_LOCATION; // default if no user location exists if (userLocation != null) { userPosition = new LatLng(userLocation.getLatitude(), userLocation.getLongitude()); } userMarker = map.addMarker(new MarkerOptions().position(userPosition).anchor(0.5f, 0.5f) .icon(BitmapDescriptorFactory.fromResource(R.drawable.person))); return MapUtils.convertLatLng(userMarker.getPosition()); } private void displayHotSpots(List<HotSpot> hotSpots) { for (int i = 0, size = hotSpots.size(); i < size; i++) { HotSpot hotSpot = hotSpots.get(i); LatLng location = new LatLng(hotSpot.getLatitude(), hotSpot.getLongitude()); Marker marker = map .addMarker(new MarkerOptions().position(location).anchor(0.5f, 0.5f).icon(defaultPin)); // select first (nearest) hotspot if (i == 0) { currentMarker = marker; currentHotSpot = hotSpot; showHotSpotDetails(hotSpot); marker.setIcon(activePin); marker.setAnchor(0.5f, 1.0f); map.moveCamera(CameraUpdateFactory.newLatLngZoom(location, 10.0f)); } } contentArea.setVisibility(View.VISIBLE); fab.setVisibility(View.VISIBLE); } @Override public void showHotSpotDetails(HotSpot hotSpot) { currentHotSpot = hotSpot; hotSpotName.setText(hotSpot.getName()); addressLine1.setText(hotSpot.getAddressLine1()); addressLine2.setText(hotSpot.getAddressLine2()); if (hotSpot.isVerified()) { verificationStatus.setText(R.string.verified_network); } else { verificationStatus.setText(R.string.unverified_network); } if (hotSpot.getSignInRequired()) { signInRequirement.setText(R.string.sign_in); } else { signInRequirement.setText(R.string.no_sign_in); } downloadSpeed.setText(spanSuffix(Integer.toString(hotSpot.getDownloadSpeed()), getString(R.string.internet_unit), new RelativeSizeSpan(0.75f))); connectionCount.setText(spanSuffix(Integer.toString(hotSpot.getConnections()), getString(R.string.connections), new RelativeSizeSpan(0.75f))); hotspotDistance.setText(spanSuffix(distanceFormatter.format(hotSpot.getDistanceAway()), getString(R.string.distance_away), new RelativeSizeSpan(0.66f), new ForegroundColorSpan(getResources().getColor(R.color.gray_ae)))); } @OnClick(R.id.fab) public void getDirections(View view) { MapUtils.showDirections(this, MapUtils.convertLatLng(userMarker.getPosition()), MapUtils.convertLatLng(currentHotSpot.getLatitude(), currentHotSpot.getLongitude())); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == android.R.id.home) { finish(); return true; } return super.onOptionsItemSelected(item); } @Override public boolean onTouchEvent(MotionEvent event) { this.detector.onTouchEvent(event); return super.onTouchEvent(event); } }