From 6be2b7a3718d00e0e19e34b1d44a510cbcbd28f9 Mon Sep 17 00:00:00 2001
From: valentin <poubelle@romanet.fr>
Date: Sun, 27 Dec 2020 19:31:56 +0100
Subject: [PATCH] Added MapMarker Class Added Global accessible context
 Implementation of MapActivityViewModel Added observers to MapActivity Display
 all markers on the map thanks to the ViewModel

---
 app/src/main/AndroidManifest.xml              |  3 +
 .../vj/apps/myrealestateagency/MapMarker.java | 53 +++++++++++++
 .../vj/apps/myrealestateagency/MyApp.java     | 23 ++++++
 .../repository/MapsActivityRepository.java    |  7 +-
 .../view/AgentsActivity.java                  |  4 +
 .../myrealestateagency/view/MapsActivity.java | 75 +++++++++++++++++--
 .../viewmodel/MapsActivityViewModel.java      | 53 +++++++++++++
 7 files changed, 209 insertions(+), 9 deletions(-)
 create mode 100644 app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MapMarker.java
 create mode 100644 app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MyApp.java
 create mode 100644 app/src/main/java/fr/romanet/vj/apps/myrealestateagency/viewmodel/MapsActivityViewModel.java

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 289798a..36bf4ee 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,6 +11,7 @@
     <uses-permission android:name="android.permission.INTERNET"/>
 
     <application
+        android:name=".MyApp"
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
@@ -25,6 +26,8 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <activity android:name=".view.MapsActivity"></activity>
         <!--
              The API key for Google Maps-based APIs is defined as a string resource.
              (See the file "res/values/google_maps_api.xml").
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MapMarker.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MapMarker.java
new file mode 100644
index 0000000..22927c0
--- /dev/null
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MapMarker.java
@@ -0,0 +1,53 @@
+package fr.romanet.vj.apps.myrealestateagency;
+
+import android.location.Address;
+
+import com.google.android.gms.maps.model.BitmapDescriptorFactory;
+import com.google.android.gms.maps.model.LatLng;
+
+public class MapMarker {
+
+    private Address address;
+    private LatLng latLng;
+    private String title;
+    private float color;
+
+    public MapMarker(Address address, String title, float color) {
+        this.address = address;
+        this.latLng = new LatLng(this.address.getLatitude(), this.address.getLongitude());
+        this.title = title;
+        this.color = color;
+    }
+
+    public Address getAddress() {
+        return address;
+    }
+
+    public void setAddress(Address address) {
+        this.address = address;
+    }
+
+    public LatLng getLatLng() {
+        return latLng;
+    }
+
+    public void setLatLng(LatLng latLng) {
+        this.latLng = latLng;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public float getColor() {
+        return color;
+    }
+
+    public void setColor(float color) {
+        this.color = color;
+    }
+}
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MyApp.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MyApp.java
new file mode 100644
index 0000000..23aad56
--- /dev/null
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/MyApp.java
@@ -0,0 +1,23 @@
+package fr.romanet.vj.apps.myrealestateagency;
+
+import android.app.Application;
+import android.content.Context;
+
+public class MyApp extends Application {
+    private static MyApp instance;
+
+    public static MyApp getInstance() {
+        return instance;
+    }
+
+    public static Context getContext(){
+        return instance;
+        // or return instance.getApplicationContext();
+    }
+
+    @Override
+    public void onCreate() {
+        instance = this;
+        super.onCreate();
+    }
+}
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/MapsActivityRepository.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/MapsActivityRepository.java
index d1732c5..40a6aa3 100644
--- a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/MapsActivityRepository.java
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/repository/MapsActivityRepository.java
@@ -8,8 +8,11 @@ import java.io.IOException;
 import java.util.List;
 
 public class MapsActivityRepository {
-    public List<Address> get_lat_long_from_address(String address, Context context) throws IOException {
+
+    public static Address get_lat_long_from_address(String address, Context context) throws IOException {
         Geocoder gc = new Geocoder(context);
-        return gc.getFromLocationName(address, 1);
+        return gc.getFromLocationName(address, 1).get(0);
     }
+
+
 }
\ No newline at end of file
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/AgentsActivity.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/AgentsActivity.java
index 57d5b5e..1120daa 100644
--- a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/AgentsActivity.java
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/AgentsActivity.java
@@ -6,6 +6,7 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.recyclerview.widget.DividerItemDecoration;
 import androidx.recyclerview.widget.RecyclerView;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.View;
 import android.view.View.OnClickListener;
@@ -32,6 +33,9 @@ final public class AgentsActivity extends AppCompatActivity implements OnClickLi
         recyclerView.addItemDecoration(new DividerItemDecoration(this, DividerItemDecoration.VERTICAL));
         viewModel = new ViewModelProvider(this).get(AgentsActivityViewModel.class);
         observeAgents();
+
+        Intent i = new Intent(AgentsActivity.this, MapsActivity.class);
+        AgentsActivity.this.startActivity(i);
     }
 
     private void observeAgents()
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/MapsActivity.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/MapsActivity.java
index 1a3d523..1a2d98e 100644
--- a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/MapsActivity.java
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/view/MapsActivity.java
@@ -1,33 +1,57 @@
 package fr.romanet.vj.apps.myrealestateagency.view;
 
 import androidx.fragment.app.FragmentActivity;
+import androidx.lifecycle.Observer;
+import androidx.lifecycle.ViewModel;
+import androidx.lifecycle.ViewModelProvider;
 
+import android.location.Address;
 import android.os.Bundle;
+import android.util.Log;
 
+import com.google.android.gms.maps.CameraUpdate;
 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.LatLngBounds;
+import com.google.android.gms.maps.model.Marker;
 import com.google.android.gms.maps.model.MarkerOptions;
 
+import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
 
+import fr.romanet.vj.apps.myrealestateagency.MapMarker;
 import fr.romanet.vj.apps.myrealestateagency.R;
 import fr.romanet.vj.apps.myrealestateagency.repository.MapsActivityRepository;
+import fr.romanet.vj.apps.myrealestateagency.viewmodel.MapsActivityViewModel;
+//import fr.romanet.vj.apps.myrealestateagency.viewmodel.MainActivityViewModel;
 
 public class MapsActivity extends FragmentActivity implements OnMapReadyCallback {
 
     private GoogleMap mMap;
+    private MapsActivityViewModel viewModel;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_maps);
+
+
         // Obtain the SupportMapFragment and get notified when the map is ready to be used.
         SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                 .findFragmentById(R.id.map);
         mapFragment.getMapAsync(this);
+
+        // - Define and point to the ViewModel
+        viewModel = new ViewModelProvider(this).get(MapsActivityViewModel.class);
+
+        getLifecycle().addObserver(viewModel);
+
     }
 
     /**
@@ -41,13 +65,50 @@ public class MapsActivity extends FragmentActivity implements OnMapReadyCallback
      */
     @Override
     public void onMapReady(GoogleMap googleMap) {
-        mMap = googleMap;
+        LatLng latlng_cachan;
+        LatLng latlng_efrei;
 
-        // Add a marker in Sydney and move the camera
-        LatLng sydney = new LatLng(-34, 151);
-//        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
-        mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney"));
-        mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));
-//        List<String> ll = MapsActivityRepository.get
+        LatLngBounds latlngbnd;
+        observeAddresses(googleMap);
+
+
+
+    }
+
+    private void observeAddresses(GoogleMap mMap){
+        viewModel.markers_to_display.observe(this, new Observer<List<MapMarker>>() {
+        List<MarkerOptions> markers = new ArrayList<MarkerOptions>();
+        MarkerOptions tmp_marker;
+
+            @Override
+            public void onChanged(List<MapMarker> mapMarkers) {
+
+                for (MapMarker mapMarker: mapMarkers){
+                    tmp_marker = new MarkerOptions().position(mapMarker.getLatLng()).title(mapMarker.getTitle()).icon(BitmapDescriptorFactory.defaultMarker(mapMarker.getColor()));
+                    mMap.addMarker(tmp_marker);
+                    markers.add(tmp_marker);
+                }
+
+                mMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
+                    @Override
+                    public void onMapLoaded() {
+                        LatLngBounds.Builder builder = new LatLngBounds.Builder();
+                        for (MarkerOptions marker : markers) {
+                            builder.include(marker.getPosition());
+                        }
+                        LatLngBounds bounds = builder.build();
+
+                        int padding = 200; // offset from edges of the map in pixels
+                        CameraUpdate cu = CameraUpdateFactory.newLatLngBounds(bounds, padding);
+
+                        mMap.animateCamera(cu);
+
+
+
+//                            mMap.moveCamera(CameraUpdateFactory.newLatLngBounds(latlngbnd, 30));
+                    }
+                });
+            }
+        });
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/viewmodel/MapsActivityViewModel.java b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/viewmodel/MapsActivityViewModel.java
new file mode 100644
index 0000000..7cebbee
--- /dev/null
+++ b/app/src/main/java/fr/romanet/vj/apps/myrealestateagency/viewmodel/MapsActivityViewModel.java
@@ -0,0 +1,53 @@
+package fr.romanet.vj.apps.myrealestateagency.viewmodel;
+
+import android.app.Application;
+import android.location.Address;
+
+import androidx.annotation.NonNull;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleObserver;
+import androidx.lifecycle.MutableLiveData;
+import androidx.lifecycle.OnLifecycleEvent;
+
+import com.google.android.gms.maps.model.BitmapDescriptorFactory;
+import com.google.android.gms.maps.model.LatLng;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import fr.romanet.vj.apps.myrealestateagency.MapMarker;
+import fr.romanet.vj.apps.myrealestateagency.MyApp;
+import fr.romanet.vj.apps.myrealestateagency.repository.MapsActivityRepository;
+import fr.romanet.vj.apps.myrealestateagency.view.MapsActivity;
+
+public class MapsActivityViewModel extends AndroidViewModel implements LifecycleObserver {
+
+    public MapsActivityViewModel(@NonNull Application application) {
+        super(application);
+    }
+
+    public MutableLiveData<List<MapMarker>> markers_to_display = new MutableLiveData<>();
+
+    @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
+    private void init_map() throws IOException {
+        List<MapMarker> mapMarkers = new ArrayList<MapMarker>();
+//        List<LatLng> latLngs = null;
+
+        mapMarkers.add(new MapMarker(MapsActivityRepository.get_lat_long_from_address("Paris, France", MyApp.getContext()), "Paris", BitmapDescriptorFactory.HUE_BLUE));
+        mapMarkers.add(new MapMarker(MapsActivityRepository.get_lat_long_from_address("Villejuif, France", MyApp.getContext()), "Villejuif", BitmapDescriptorFactory.HUE_BLUE));
+        mapMarkers.add(new MapMarker(MapsActivityRepository.get_lat_long_from_address("Cachan, France", MyApp.getContext()), "Cachan", BitmapDescriptorFactory.HUE_BLUE));
+        mapMarkers.add(new MapMarker(MapsActivityRepository.get_lat_long_from_address("Massy, France", MyApp.getContext()), "Massy", BitmapDescriptorFactory.HUE_GREEN));
+        mapMarkers.add(new MapMarker(MapsActivityRepository.get_lat_long_from_address("Ivry, France", MyApp.getContext()), "Ivry", BitmapDescriptorFactory.HUE_RED));
+
+//        for (MapMarker mapMarker : mapMarkers){
+//            latLngs.add(new LatLng(addr.getLatitude(), addr.getLongitude()));
+//        }
+
+        markers_to_display.postValue(mapMarkers);
+    }
+
+
+}