Position a code-created View on the map
Position a code-created view on the map and use a positioner to locate it

package com.eegeo.apisamples;
import android.graphics.Point;
import android.graphics.PointF;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.annotation.UiThread;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ImageView;
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.map.OnMapReadyCallback;
import com.eegeo.mapapi.positioner.OnPositionerChangedListener;
import com.eegeo.mapapi.positioner.Positioner;
import com.eegeo.mapapi.positioner.PositionerOptions;
import com.eegeo.ui.util.ViewAnchor;
public class PositionCodeCreatedViewOnMapActivity extends WrldExampleActivity {
private MapView m_mapView;
private EegeoMap m_eegeoMap = null;
private OnPositionerChangedListener m_positionerChangedListener = null;
@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_code_created_view_on_map_activity);
m_mapView = (MapView) findViewById(R.id.position_code_created_view_on_map_mapview);
m_mapView.onCreate(savedInstanceState);
m_mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(final EegeoMap map) {
m_eegeoMap = map;
ImageView imageView = new ImageView(PositionCodeCreatedViewOnMapActivity.this);
imageView.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT));
imageView.setImageResource(R.drawable.wrld3d);
m_mapView.addView(imageView);
imageView.setVisibility(View.INVISIBLE);
m_positionerChangedListener = new ViewAnchorAdapter(imageView, 0.5f, 0.5f);
m_eegeoMap.addPositionerChangedListener(m_positionerChangedListener);
m_eegeoMap.addPositioner(new PositionerOptions()
.position(new LatLng(37.802355, -122.405848))
);
}
});
}
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 ViewAnchorAdapter implements OnPositionerChangedListener {
private View m_view;
private PointF m_anchorUV;
ViewAnchorAdapter(@NonNull View view, float u, float v)
{
m_view = view;
m_anchorUV = new PointF(u, v);
}
@UiThread
public void onPositionerChanged(Positioner positioner) {
if(positioner.isScreenPointProjectionDefined()) {
m_view.setVisibility(View.VISIBLE);
Point screenPoint = positioner.getScreenPointOrNull();
if(screenPoint != null)
ViewAnchor.positionView(m_view, screenPoint, m_anchorUV);
}
else {
m_view.setVisibility(View.INVISIBLE);
}
}
}
}