[android] Dynamic update of InfowWindow with InfoWindowAdapter example

Fixes #5353

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/annotations/InfoWindow.java

@@ -259,11 +259,20 @@ public class InfoWindow {
         View view = mView.get();
         if (mapboxMap != null && marker != null && view != null) {
             mCoordinates = mapboxMap.getProjection().toScreenLocation(marker.getPosition());
-            view.setX(mCoordinates.x + mViewWidthOffset - mMarkerWidthOffset);
+
+            if (view instanceof InfoWindowView) {
+                view.setX(mCoordinates.x + mViewWidthOffset - mMarkerWidthOffset);
+            } else {
+                view.setX(mCoordinates.x - (view.getMeasuredWidth() / 2) - mMarkerWidthOffset);
+            }
             view.setY(mCoordinates.y + mMarkerHeightOffset);
         }
     }
 
+    public View getView() {
+        return mView != null ? mView.get() : null;
+    }
+
     boolean isVisible() {
         return mIsVisible;
     }

platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/annotations/Marker.java

@@ -117,6 +117,11 @@ public class Marker extends Annotation {
         refreshInfoWindowContent();
     }
 
+    @Nullable
+    public InfoWindow getInfoWindow() {
+        return infoWindow;
+    }
+
     /**
      * Update only for default Marker's InfoWindow content for Title and Snippet
      */

platform/android/MapboxGLAndroidSDKTestApp/src/main/AndroidManifest.xml

@@ -41,6 +41,14 @@
                 android:name="@string/category"
                 android:value="@string/category_infowindow" />
         </activity>
+        <activity
+            android:name=".activity.infowindow.DynamicInfoWindowAdapterActivity"
+            android:description="@string/description_dynamic_info_window_adapter"
+            android:label="@string/activity_dynamic_infowindow_adapter">
+            <meta-data
+                android:name="@string/category"
+                android:value="@string/category_infowindow"/>
+        </activity>
         <activity
             android:name=".activity.annotation.BulkMarkerActivity"
             android:configChanges="orientation|keyboardHidden|screenSize"

platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/infowindow/DynamicInfoWindowAdapterActivity.java

@@ -0,0 +1,169 @@
+package com.mapbox.mapboxsdk.testapp.activity.infowindow;
+
+import android.graphics.Color;
+import android.graphics.PorterDuff;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.support.annotation.NonNull;
+import android.support.annotation.Nullable;
+import android.support.v4.content.ContextCompat;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.TextView;
+
+import com.mapbox.mapboxsdk.annotations.IconFactory;
+import com.mapbox.mapboxsdk.annotations.InfoWindow;
+import com.mapbox.mapboxsdk.annotations.Marker;
+import com.mapbox.mapboxsdk.annotations.MarkerView;
+import com.mapbox.mapboxsdk.annotations.MarkerViewOptions;
+import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
+import com.mapbox.mapboxsdk.geometry.LatLng;
+import com.mapbox.mapboxsdk.maps.MapView;
+import com.mapbox.mapboxsdk.maps.MapboxMap;
+import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
+import com.mapbox.mapboxsdk.testapp.R;
+
+/**
+ * Shows how to dynamically update InfoWindow when Using an MapboxMap.InfoWindowAdapter
+ */
+public class DynamicInfoWindowAdapterActivity extends AppCompatActivity {
+
+    private MapView mapView;
+
+    private LatLng paris = new LatLng(48.864716, 2.349014);
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_infowindow_adapter);
+
+        setupActionBar();
+
+        mapView = (MapView) findViewById(R.id.mapView);
+        mapView.onCreate(savedInstanceState);
+
+        mapView.getMapAsync(new OnMapReadyCallback() {
+            @Override
+            public void onMapReady(@NonNull final MapboxMap mapboxMap) {
+                //Add info window adapter
+                addCustomInfoWindowAdapter(mapboxMap);
+
+                //Keep info windows open on click
+                mapboxMap.getUiSettings().setDeselectMarkersOnTap(false);
+
+                //Add a marker
+                final MarkerView marker = addMarker(mapboxMap);
+                mapboxMap.selectMarker(marker);
+
+                //On map click, change the info window contents
+                mapboxMap.setOnMapClickListener(new MapboxMap.OnMapClickListener() {
+                    @Override
+                    public void onMapClick(@NonNull LatLng point) {
+                        //Distance from click to marker
+                        double distanceKm = marker.getPosition().distanceTo(point) / 1000;
+
+                        //Get the info window
+                        InfoWindow infoWindow = marker.getInfoWindow();
+
+                        //Get the view from the info window
+                        if (infoWindow != null && infoWindow.getView() != null) {
+                            //Set the new text on the text view in the info window
+                            ((TextView) infoWindow.getView()).setText(String.format("%.2fkm", distanceKm));
+
+                            //Update the info window position (as the text length changes)
+                            infoWindow.update();
+                        }
+                    }
+                });
+
+                //Focus on Paris
+                mapboxMap.animateCamera(CameraUpdateFactory.newLatLng(paris));
+            }
+        });
+    }
+
+    private MarkerView addMarker(MapboxMap mapboxMap) {
+        IconFactory iconFactory = IconFactory.getInstance(this);
+        Drawable iconDrawable = ContextCompat.getDrawable(this, R.drawable.ic_location_city_24dp);
+        iconDrawable.setColorFilter(getResources().getColor(R.color.mapbox_blue), PorterDuff.Mode.SRC_IN);
+
+        return mapboxMap.addMarker(
+                new MarkerViewOptions()
+                        .position(paris)
+                        .icon(iconFactory.fromDrawable(iconDrawable))
+        );
+    }
+
+    private void addCustomInfoWindowAdapter(final MapboxMap mapboxMap) {
+        final int padding = (int) getResources().getDimension(R.dimen.attr_margin);
+        mapboxMap.setInfoWindowAdapter(new MapboxMap.InfoWindowAdapter() {
+
+            @Nullable
+            @Override
+            public View getInfoWindow(@NonNull Marker marker) {
+                TextView textView = new TextView(DynamicInfoWindowAdapterActivity.this);
+                textView.setText(marker.getTitle());
+                textView.setBackgroundColor(Color.WHITE);
+                textView.setText("Click the map to calculate the distance");
+                textView.setPadding(padding, padding, padding, padding);
+
+                return textView;
+            }
+        });
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        mapView.onResume();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        mapView.onPause();
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        mapView.onSaveInstanceState(outState);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        mapView.onDestroy();
+    }
+
+    @Override
+    public void onLowMemory() {
+        super.onLowMemory();
+        mapView.onLowMemory();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                onBackPressed();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private void setupActionBar() {
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+            actionBar.setDisplayShowHomeEnabled(true);
+        }
+    }
+}

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/layout/activity_infowindow_adapter_dynamic.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <android.support.v7.widget.Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:background="@color/primary"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />
+
+    <com.mapbox.mapboxsdk.maps.MapView
+        android:id="@+id/mapView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:style_url="@string/style_mapbox_streets"
+        app:center_latitude="47.798202"
+        app:center_longitude="7.573781"
+        app:zoom="4" />
+
+</LinearLayout>

platform/android/MapboxGLAndroidSDKTestApp/src/main/res/values/strings.xml

@@ -22,6 +22,7 @@
     <!-- InfoWindow-->
     <string name="activity_info_window">Standard InfoWindow example</string>
     <string name="activity_infowindow_adapter">Custom InfoWindow Adapter</string>
+    <string name="activity_dynamic_infowindow_adapter">Custom Dynamic InfoWindow Adapter</string>
 
     <!-- Camera -->
     <string name="activity_camera_animation_types">Animation Types</string>
@@ -80,6 +81,7 @@
     <string name="description_doublemap">2 maps in a view hierarchy</string>
     <string name="description_back_to_map">Restart map view after temporarily leaving to another activity</string>
     <string name="description_view_marker">Use an Android SDK View as marker</string>
+    <string name="description_dynamic_info_window_adapter">Learn how to create a dynamic custom InfoWindow</string>
 
     <string name="menuitem_title_concurrent_infowindow">Concurrent Open InfoWindows</string>
     <string name="menuitem_title_deselect_markers_on_tap">Deselect Markers On Tap</string>