Android google map marker to enable all custom infowindow to be shown

Question

I have my following codes as below where I am putting 2 markers just for testing purpose into my codes. The problem all works fine and the markers appear the issue now is now to customised further so that the I can control to show all info window or close all info window.

protected void onPostExecute(String result) {
            String s = result.trim();


            //Toast.makeText(getApplicationContext(), "restult is"+s, Toast.LENGTH_LONG).show();
            String  stringSucess = "";
            //markers = new Hashtable<String, String>();
            int height = 50;
            int width = 40;
            BitmapDrawable bitmapdraw=(BitmapDrawable)getResources().getDrawable(R.drawable.basgray);
            Bitmap b=bitmapdraw.getBitmap();
            Bitmap smallMarker = Bitmap.createScaledBitmap(b, width, height, false);
            LatLng sydney = new LatLng(-34, 151);

            Marker mk = mMap.addMarker(new MarkerOptions()
                    .position(new LatLng(Double.parseDouble("-34"),Double.parseDouble("151")))
                    .title("First")
                    .snippet("")
                    .icon(BitmapDescriptorFactory.fromBitmap(smallMarker)));
            mk.showInfoWindow();

            //mMap.addMarker(new MarkerOptions().position(sydney).title("Marker in Sydney").icon(BitmapDescriptorFactory.fromBitmap(smallMarker))).showInfoWindow();
            mMap.moveCamera(CameraUpdateFactory.newLatLng(sydney));



            markers.put(mk.getId(), "RED");

            Marker mk2 = mMap.addMarker(new MarkerOptions()
                    .position(new LatLng(Double.parseDouble("-10"),Double.parseDouble("151")))
                    .title("Second")
                    .snippet("")
                    .icon(BitmapDescriptorFactory.fromBitmap(smallMarker)));
            mk2.showInfoWindow();
            //setListAdapter(adapter);
            markers.put(mk2.getId(), "Green");
        }

In my another function I already set for custom info window as below. Here I have already set that the info window will be customised according to another class as declared below.

public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;
        //mMap.setInfoWindowAdapter(new BalloonAdapter(getLayoutInflater(null)));
        mMap.setInfoWindowAdapter(new CustomInfoWindowAdapter());

    }

Here is my customised function to controlled the color and icon for my info window.

 private class CustomInfoWindowAdapter implements InfoWindowAdapter {

            private View view;

            public CustomInfoWindowAdapter() {
                //view = getLayoutInflater(null).inflate(R.layout.custom_info_window,
                //        null);
            }

            @Override
            public View getInfoContents(Marker marker) {

                if (marker != null
                        && marker.isInfoWindowShown()) {
                    marker.hideInfoWindow();
                    marker.showInfoWindow();
                }
                return null;
            }

            @Override
            public View getInfoWindow(final Marker marker) {
                //MapActivityFragment1.this.marker = marker;
                view = getLayoutInflater(null).inflate(R.layout.custom_info_window,
                        null);
                String url = null;

                if (marker.getId() != null && markers != null && markers.size() > 0) {
                    if ( markers.get(marker.getId()) != null &&
                            markers.get(marker.getId()) != null) {
                        url = markers.get(marker.getId());
                    }
                }


                final String title = marker.getTitle();
                final TextView titleUi = ((TextView) view.findViewById(R.id.title));
                if (title != null) {
                    titleUi.setText(title);
                } else {
                    titleUi.setText("");
                }

                final String snippet = marker.getSnippet();
                final TextView snippetUi = ((TextView) view
                        .findViewById(R.id.snippet));
                if (snippet != null) {
                    snippetUi.setText(snippet);
                } else {
                    snippetUi.setText("");
                }

                return view;
            }
        }

Answer 1

Why dont you save the instances of the markers created? Probably in a list and call a function to show info windows on the markers (marker.showInfoWindow()) and the reverse for hiding them.

Code Snippet: Create a global variable to save the list of markers.

ArrayList<Marker> markersList = new ArrayList<>();

Now when you create a marker as per your code, add them to the list.

Marker mk = mMap.addMarker(new MarkerOptions()
                .position(new LatLng(Double.parseDouble("-34"),Double.parseDouble("151")))
                .title("First")
                .snippet("")
                .icon(BitmapDescriptorFactory.fromBitmap(smallMarker)));
markersList.add(mk);

Now a simple function will do

private void showOrHideInfoWindows(boolean shouldShow){
    for(Marker marker:markersList){
        if(shouldShow)
            marker.showInfoWindow();
        else
            marker.hideInfoWindow();
    }
}

A good way to use info window is (in map fragment)

View view = getLayoutInflater().inflate(R.layout.custom_info_window, null);
mMap.setInfoWindowAdapter(new CustomInfoWindow(view, this));
mMap.setOnInfoWindowClickListener(this);

And the custom class is like

public class CustomInfoWindow implements GoogleMap.InfoWindowAdapter {

View infoWindow;
IMapDelegate mapDelegate;

public CustomInfoWindow(View view, IMapDelegate mapDelegate) {
    infoWindow = view;
    this.mapDelegate = mapDelegate;
}

@Override
public View getInfoContents(Marker marker) {
    displayView(marker);
    mapDelegate.onInfoWindowShown(infoWindow);
    return infoWindow;
}

private void displayView(final Marker marker) {
    ((TextView)infoWindow.findViewById(R.id.markerTextView)).setText(marker.getTitle());
}

@Override
public View getInfoWindow(Marker marker) {
    return null;
}

}