CODEWITHSUNDEEP
androidmaps
Sreedev
Sreedev

Reputation: 6653

How to set the zoom level of the map view making exact three pins visible?

My map view contains many pinpoints.When ever the user takes that activity the map should be zoomed in such a level the correct 3 pints are visible.The map should not be zoomed more or less it should be exactly three.I know zoom level of the map can be varied from 0 to 21 through code.But is there any way to set the zoom level in such a way that exact 3 pins are visible in both the cases if the pins are far or near correct 3 should be visible?Is there any functionality in the API to set like that?

Upvotes: 0

Views: 695

Answers (1)

ePeace
ePeace

Reputation: 1997

With points being all the geopoints you want to be visible on your map.

private void Zoom() {
    int minLatitude = Integer.MAX_VALUE;
    int maxLatitude = Integer.MIN_VALUE;
    int minLongitude = Integer.MAX_VALUE;
    int maxLongitude = Integer.MIN_VALUE;

    for (GeoPoint p : points) {
        int lati = p.getLatitudeE6();
        int lon = p.getLongitudeE6();

        maxLatitude = Math.max(lati, maxLatitude);
        minLatitude = Math.min(lati, minLatitude);
        maxLongitude = Math.max(lon, maxLongitude);
        minLongitude = Math.min(lon, minLongitude);
    }
    mapController.zoomToSpan(Math.abs(maxLatitude - minLatitude),
            Math.abs(maxLongitude - minLongitude));
    mapController.animateTo(new GeoPoint((maxLatitude + minLatitude) / 2,
            (maxLongitude + minLongitude) / 2));
}

Upvotes: 2

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