simplify osm attribution (#3613)

src/main/java/eu/siacs/conversations/ui/LocationActivity.java

@@ -27,6 +27,7 @@ import org.osmdroid.tileprovider.tilesource.TileSourceFactory;
 import org.osmdroid.util.GeoPoint;
 import org.osmdroid.views.CustomZoomButtonsController;
 import org.osmdroid.views.MapView;
+import org.osmdroid.views.overlay.CopyrightOverlay;
 import org.osmdroid.views.overlay.Overlay;
 
 import java.io.IOException;
@@ -71,7 +72,7 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 	protected void updateLocationMarkers() {
 		clearMarkers();
 	}
-	
+
 	@Override
 	protected void onCreate(final Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
@@ -130,6 +131,7 @@ public abstract class LocationActivity extends ActionBarActivity implements Loca
 
 	protected void setupMapView(MapView mapView, final GeoPoint pos) {
 		map = mapView;
+		map.getOverlays().add(new CopyrightOverlay(this));
 		map.setTileSource(TileSourceFactory.MAPNIK);
 		map.getZoomController().setVisibility(CustomZoomButtonsController.Visibility.NEVER);
 		map.setMultiTouchControls(true);

src/main/java/eu/siacs/conversations/ui/ShareLocationActivity.java

@@ -11,9 +11,7 @@ import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.design.widget.Snackbar;
 import android.support.v7.widget.Toolbar;
-import android.text.method.LinkMovementMethod;
 import android.view.View;
-import android.widget.TextView;
 
 import org.osmdroid.api.IGeoPoint;
 import org.osmdroid.util.GeoPoint;
@@ -107,8 +105,6 @@ public class ShareLocationActivity extends LocationActivity implements LocationL
 			}
 			toggleFixedLocation();
 		});
-
-		binding.openstreetmapCredit.setMovementMethod(LinkMovementMethod.getInstance());
 	}
 
 	@Override

src/main/res/layout/activity_share_location.xml

@@ -26,18 +26,6 @@
                 android:layout_width="match_parent"
                 android:layout_height="match_parent" />
 
-            <TextView
-                android:id="@+id/openstreetmap_credit"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_gravity="bottom|start"
-                android:layout_margin="4dp"
-                android:text="@string/openstreetmap_credit"
-                android:background="@color/white50"
-                android:paddingLeft="4dp"
-                android:paddingRight="4dp"
-                app:elevation="4dp" />
-
             <android.support.design.widget.FloatingActionButton
                 android:id="@+id/fab"
                 android:layout_width="wrap_content"

src/main/res/values/colors.xml

@@ -9,7 +9,6 @@
 	<color name="white87">#deffffff</color>
 	<color name="white70">#b2ffffff</color>
 	<color name="white12">#1fffffff</color>
-	<color name="white50">#80FFFFFF</color>
 	<color name="grey50">#fffafafa</color>
 	<color name="grey200">#ffeeeeee</color>
 	<color name="grey300">#ffe0e0e0</color>

src/main/res/values/strings.xml

@@ -886,5 +886,4 @@
         <item quantity="one">View %1$d Participant</item>
         <item quantity="other">View %1$d Participants</item>
     </plurals>
-    <string name="openstreetmap_credit">© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors</string>
 </resources>