Add location FAB

app/build.gradle

@@ -21,18 +21,24 @@ android {
     }
 }
 
+ext {
+    supportLibVersion = '25.3.1'
+    playServicesVersion = '11.0.2'
+    butterKnifeVersion = '8.6.0'
+    appAuthVersion = '0.2.0'
+}
+
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
-    compile 'com.android.support:appcompat-v7:25.3.1'
-    compile 'net.openid:appauth:0.2.0'
-    testCompile 'junit:junit:4.12'
-    compile 'com.android.support:design:25.3.1'
-    compile 'com.google.android.gms:play-services-maps:10.2.6'
-    compile 'com.android.support.constraint:constraint-layout:1.0.2'
-    compile 'com.android.support:support-v4:25.3.1'
-    compile 'com.jakewharton:butterknife:8.6.0'
-    annotationProcessor 'com.jakewharton:butterknife-compiler:8.6.0'
+    compile "com.android.support:appcompat-v7:${supportLibVersion}"
+    compile "net.openid:appauth:${appAuthVersion}"
+    testCompile "junit:junit:4.12"
+    compile "com.android.support:design:${supportLibVersion}"
+    compile "com.google.android.gms:play-services-maps:${playServicesVersion}"
+    compile "com.android.support:support-v4:${supportLibVersion}"
+    compile "com.jakewharton:butterknife:${butterKnifeVersion}"
+    annotationProcessor "com.jakewharton:butterknife-compiler:${butterKnifeVersion}"
 }

app/src/main/java/in/ac/iitb/gymkhana/iitbapp/fragments/MapFragment.java

@@ -2,7 +2,11 @@ package in.ac.iitb.gymkhana.iitbapp.fragments;
 
 import android.Manifest;
 import android.content.pm.PackageManager;
+import android.graphics.PorterDuff;
+import android.location.Location;
+import android.location.LocationManager;
 import android.os.Bundle;
+import android.support.design.widget.FloatingActionButton;
 import android.support.v4.app.Fragment;
 import android.support.v4.content.ContextCompat;
 import android.view.LayoutInflater;
@@ -10,6 +14,7 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Toast;
 
+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;
@@ -18,12 +23,18 @@ import com.google.android.gms.maps.model.LatLng;
 import com.google.android.gms.maps.model.LatLngBounds;
 import com.google.android.gms.maps.model.MarkerOptions;
 
+import java.util.List;
+
 import in.ac.iitb.gymkhana.iitbapp.R;
 
+import static android.content.Context.LOCATION_SERVICE;
+
 public class MapFragment extends Fragment implements OnMapReadyCallback {
 
     SupportMapFragment gMapFragment;
-    GoogleMap googleMap ;
+    GoogleMap googleMap;
+    FloatingActionButton locationButton;
+    Location currentLocation;
 
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
@@ -36,44 +47,72 @@ public class MapFragment extends Fragment implements OnMapReadyCallback {
         return view;
     }
 
+    private Location getLastKnownLocation() {
+        LocationManager mLocationManager = (LocationManager) getContext().getSystemService(LOCATION_SERVICE);
+        List<String> providers = mLocationManager.getProviders(true);
+        Location bestLocation = null;
+        for (String provider : providers) {
+            Location l = mLocationManager.getLastKnownLocation(provider);
+            if (l == null) {
+                continue;
+            }
+            if (bestLocation == null || l.getAccuracy() < bestLocation.getAccuracy()) {
+                bestLocation = l;
+            }
+        }
+        return bestLocation;
+    }
+
     @Override
     public void onMapReady(GoogleMap gMap) {
 
-        googleMap=gMap;
-        if (ContextCompat.checkSelfPermission(getActivity(),
-                Manifest.permission.ACCESS_FINE_LOCATION)
-                == PackageManager.PERMISSION_GRANTED) {
+        //TODO: Handle Location permissions in MainActivity, permission required to view fragment
+        googleMap = gMap;
+        if (ContextCompat.checkSelfPermission(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
             googleMap.setMyLocationEnabled(true);
-            googleMap.getUiSettings().setMyLocationButtonEnabled(true);
+            googleMap.getUiSettings().setMyLocationButtonEnabled(false);
             googleMap.getUiSettings().setZoomGesturesEnabled(true);
         } else {
             requestPermissions(new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 0);
         }
 
 
-        LatLngBounds iitbBounds=new LatLngBounds(new LatLng(19.1249000, 72.9046000),new LatLng(19.143522, 72.920000));
+        LatLngBounds iitbBounds = new LatLngBounds(new LatLng(19.1249000, 72.9046000), new LatLng(19.143522, 72.920000));
         googleMap.setLatLngBoundsForCameraTarget(iitbBounds);
         googleMap.setMaxZoomPreference(30);
-        googleMap.setMinZoomPreference((float) 14.5);
+        googleMap.setMinZoomPreference(14.5f);
         // Position the map's camera near Mumbai
         LatLng iitb = new LatLng(19.1334, 72.9133);
-        googleMap.addMarker(new MarkerOptions().position(iitb)
-                .title("Marker in IITB"));
+        googleMap.addMarker(new MarkerOptions().position(iitb).title("Marker in IITB"));
         googleMap.moveCamera(CameraUpdateFactory.newLatLng(iitb));
+
+        googleMap.setOnCameraMoveListener(new GoogleMap.OnCameraMoveListener() {
+            @Override
+            public void onCameraMove() {
+                locationButton.getDrawable().setColorFilter(ContextCompat.getColor(getContext(), R.color.colorGray), PorterDuff.Mode.SRC_IN);
             }
-    public void onRequestPermissionsResult (int requestCode,
-                                          String[] permissions,
-                                          int[] grantResults)
-{
-    if(grantResults[0]==PackageManager.PERMISSION_GRANTED)
-    {
+        });
+
+        locationButton = (FloatingActionButton) getActivity().findViewById(R.id.location);
+        locationButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                currentLocation = getLastKnownLocation();
+                CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(new LatLng(currentLocation.getLatitude(), currentLocation.getLongitude()), 17);
+                googleMap.animateCamera(cameraUpdate);
+                locationButton.getDrawable().setColorFilter(ContextCompat.getColor(getContext(), R.color.colorPrimary), PorterDuff.Mode.SRC_IN);
+            }
+        });
+    }
+
+    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
+        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
             googleMap.setMyLocationEnabled(true);
-        googleMap.getUiSettings().setMyLocationButtonEnabled(true);
+            googleMap.getUiSettings().setMyLocationButtonEnabled(false);
             googleMap.getUiSettings().setZoomGesturesEnabled(true);
-    }
-    else
-    {
+        } else {
             Toast toast = Toast.makeText(getActivity(), "Need Permission", Toast.LENGTH_SHORT);
             toast.show();
         }
-}}
+    }
+}

app/src/main/res/layout/fragment_map.xml

@@ -12,4 +12,15 @@
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         map:cameraZoom="18" />
+
+    <!--TODO: Change colours-->
+    <android.support.design.widget.FloatingActionButton
+        android:id="@+id/location"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_marginBottom="48dp"
+        android:layout_marginEnd="@dimen/fab_margin"
+        android:src="@drawable/ic_my_location_black_24dp" />
+
 </FrameLayout>
\ No newline at end of file

app/src/main/res/values/colors.xml

@@ -4,4 +4,5 @@
     <color name="colorPrimaryDark">#44C0CA</color>
     <color name="colorAccent">#ECF833</color>
     <color name="colorCalendarWeek">#000000</color>
+    <color name="colorGray">#757575</color>
 </resources>

build.gradle

@@ -7,7 +7,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0-alpha3'
+        classpath 'com.android.tools.build:gradle:3.0.0-alpha4'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle/wrapper/gradle-wrapper.properties

-#Fri May 19 05:35:14 IST 2017
+#Fri Jun 30 22:37:20 IST 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-milestone-1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-rc-1-all.zip