安卓：Location.distanceTo不能正常工作？ [英] Android : Location.distanceTo not working correctly?

问题描述

我有一个问题，使用Location.distanceTo方法计算距离。

I am having an issue calculating distance using the Location.distanceTo method.

private class MyLocationOverlay1 extends MyLocationOverlay {
    @Override
    public void drawMyLocation(Canvas canvas, MapView mapView, Location lastFix, GeoPoint myLocation, long when) 
            super.drawMyLocation(canvas,mapView,lastFix,myLocation,when);

            Location bLocation = new Location("reverseGeocoded");
            bLocation.setLatitude(FindList.gpslat);           // Value = 3.294391E7
            bLocation.setLongitude(FindList.gpslong);         // Value = -9.6564615E7
            Location aLocation = new Location("reverseGeocoded");
            aLocation.setLatitude(myLocation.getLatitudeE6());   // Value = 3.2946164E7
            aLocation.setLongitude(myLocation.getLongitudeE6()); // Value = -9.6505141E7
            aLocation.set(aLocation);    // Don't think I need this   
            bLocation.set(bLocation);    // Don't think I need this either

            int distance = (int)aLocation.distanceTo(bLocation);  // Value = 12637795 ???
            String str = " (" + String.valueOf(distance) + " meters)";
}
}

谁能告诉我为什么我的距离计算是显示12637795米？

Can someone tell my why my distance calculation is showing 12,637,795 Meters?

推荐答案

您应该修改行：

aLocation.setLatitude(myLocation.getLatitudeE6() / 1e6);
aLocation.setLongitude(myLocation.getLongitudeE6() / 1e6);

和删除行：

aLocation.set(aLocation);
bLocation.set(bLocation);

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