Position a View on the map
Use a positioner to locate a View at a point on the map

package com.eegeo.apisamples;
import android.content.Context;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.UiThread;
import android.graphics.Point;
import android.graphics.PointF;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;
import com.eegeo.mapapi.EegeoApi;
import com.eegeo.mapapi.EegeoMap;
import com.eegeo.mapapi.MapView;
import com.eegeo.mapapi.geometry.LatLng;
import com.eegeo.mapapi.geometry.LatLngAlt;
import com.eegeo.mapapi.map.OnMapReadyCallback;
import com.eegeo.mapapi.positioner.Positioner;
import com.eegeo.mapapi.positioner.PositionerOptions;
import com.eegeo.mapapi.positioner.OnPositionerChangedListener;
import com.eegeo.ui.util.ViewAnchor;
import static com.eegeo.mapapi.geometry.ElevationMode.HeightAboveGround;
public class PositionViewOnMapActivity extends WrldExampleActivity {
private MapView m_mapView;
private EegeoMap m_eegeoMap = null;
private OnPositionerChangedListener m_positionerChangedListener = null;
View m_calloutView;
TextView m_screenView;
TextView m_worldView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Initialise the EegeoApi with your api key - this needs calling either in the application
// instance, or in the activity that contains the MapView
EegeoApi.init(this, getString(R.string.eegeo_api_key));
// The MapView is contained in a layout xml
setContentView(R.layout.position_view_on_map_activity);
m_mapView = (MapView) findViewById(R.id.position_view_on_map_mapview);
m_mapView.onCreate(savedInstanceState);
m_calloutView = findViewById(R.id.position_view_on_map_callout);
m_calloutView.setVisibility(View.INVISIBLE);
m_screenView = (TextView) findViewById(R.id.screen_text_view_on_map_text);
m_worldView = (TextView) findViewById(R.id.world_text_view_on_map_text);
m_mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(final EegeoMap map) {
m_eegeoMap = map;
m_positionerChangedListener = new OnScreenPointChangedListener(m_calloutView, m_screenView, m_worldView);
m_eegeoMap.addPositionerChangedListener(m_positionerChangedListener);
map.addPositioner(new PositionerOptions()
.position(new LatLng(37.802355, -122.405848))
.elevation(10.0)
.elevationMode(HeightAboveGround)
);
}
});
}
public void onClickMapCollapse(View view) {
if (m_eegeoMap != null) {
m_eegeoMap.setMapCollapsed(!m_eegeoMap.isMapCollapsed());
}
}
@Override
protected void onResume() {
super.onResume();
m_mapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
m_mapView.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
m_mapView.onDestroy();
}
private class OnScreenPointChangedListener implements OnPositionerChangedListener {
private View m_callout;
private TextView m_screenTextView;
private TextView m_worldTextView;
OnScreenPointChangedListener(@NonNull View callout,
@NonNull TextView screenTextView,
@NonNull TextView worldTextView)
{
m_callout = callout;
m_screenTextView = screenTextView;
m_worldTextView = worldTextView;
}
@UiThread
public void onPositionerChanged(Positioner positioner) {
String notVisibleString = getString(R.string.not_visible_add_positioner_activity);
if(positioner.isScreenPointProjectionDefined())
{
Point screenPoint = positioner.getScreenPointOrNull();
if(screenPoint != null)
{
m_screenTextView.setText(String.format(
getString(R.string.screen_point_add_positioner_activity),
screenPoint.x,
screenPoint.y));
PointF anchorUV = new PointF(0.5f, 1.0f);
ViewAnchor.positionView(m_callout, screenPoint, anchorUV);
}
else {
m_screenTextView.setText(notVisibleString);
}
LatLngAlt transformedPoint = positioner.getTransformedPointOrNull();
if(transformedPoint != null)
{
m_worldTextView.setText(String.format(
getString(R.string.world_point_add_positioner_activity),
transformedPoint.latitude,
transformedPoint.longitude,
transformedPoint.altitude));
}
else {
m_worldTextView.setText(notVisibleString);
}
m_callout.setVisibility(View.VISIBLE);
}
else {
m_screenTextView.setText(notVisibleString);
m_worldTextView.setText(notVisibleString);
m_callout.setVisibility(View.INVISIBLE);
}
}
}
}