How to zoom in and out the map maintaining the course to destination?

Here is the current implementation of zoom in and out of the map during navigation.

ivZoomIn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                NavigationManager.getInstance().setMapUpdateMode(NavigationManager.MapUpdateMode.NONE);
                m_map.setZoomLevel(m_map.getZoomLevel() + 0.5, Map.Animation.BOW);
                tvReCenter.setVisibility(View.VISIBLE);
            }
        });

        ivZoomOut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                NavigationManager.getInstance().setMapUpdateMode(NavigationManager.MapUpdateMode.NONE);
                m_map.setZoomLevel(m_map.getZoomLevel() - 0.5, Map.Animation.BOW);
                tvReCenter.setVisibility(View.VISIBLE);
                tvReCenter.setVisibility(View.VISIBLE);
            }
        });
        tvReCenter.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                m_navigationManager.setMapUpdateMode(NavigationManager.MapUpdateMode.ROADVIEW);
                GeoPosition lkp = PositioningManager.getInstance().getLastKnownPosition();
                if (lkp != null && lkp.isValid())
                    m_map.setCenter(lkp.getCoordinate(), Map.Animation.BOW);
                tvReCenter.setVisibility(View.GONE);
                m_map.setZoomLevel(17.0f, Map.Animation.BOW);
            }
        });

With current implementation when we zoom in or out the map, the map remains still at the current position where it was zoomed and the position indication icon goes out of the map course to the destination. Actually we want to zoom in/out the map maintaining map updates and position indicator update. The reason of not updating the map is due to NavigationManager.getInstance().setMapUpdateMode(NavigationManager.MapUpdateMode.NONE); but the problem is if we don’t this, the zoom in/out out the map doesn’t work.

If we zoom the map with the below code it didn’t zoom.

ivZoomOut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                m_map.setZoomLevel(m_map.getZoomLevel() - 0.5, Map.Animation.BOW);

            }
        });

[NazarKacharaba]

Could you tell what exactly did not work for you? There is another more hacky way to achieve what you need, try this snippet:

final Handler handler = new Handler(Looper.getMainLooper());
void zoomInOut(boolean zoomIn) {
    handler.removeCallbacksAndMessages(null);
    final NavigationManager navigationManager = NavigationManager.getInstance();
    // stop any map movements to set zoom level
    navigationManager.setMapUpdateMode(MapUpdateMode.NONE);
    map.setZoomLevel(map.getZoomLevel() + (zoomIn ? 0.5 : -0.5), Map.Animation.LINEAR);
    // wait until zoom is set
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            navigationManager.setMapUpdateMode(MapUpdateMode.POSITION_ANIMATION);
        }
    }, 2000/*time to wait until LINEAR zoom animation is done*/);
}

[NazarKacharaba]

@binod-techindustan In NavigationManager.MapUpdateMode.ROADVIEW mode you should use NavigationManager.getInstance().getRoadView().zoomOut() or NavigationManager.getInstance().getRoadView().zoomIn() methods.