Question

I’m trying to add a proximity alert in my application but with variable radius.

If I use radius value like this

float radius = 100f;

It works!

But I’m trying to do it this way:

private void setProximityAlert(String Title, double lat, double lon, float radius, final int id, int requestCode){
    // Expiration is 10 Minutes (10mins * 60secs * 1000milliSecs)
    long expiration = 600000;

    LocationManager locManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

    Intent intent = new Intent(PROXIMITY_INTENT_ACTION);
    intent.putExtra("id", id);
    intent.putExtra("Title", Title);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), requestCode, intent, PendingIntent.FLAG_CANCEL_CURRENT);

    locManager.addProximityAlert(lat, lon, radius, expiration, pendingIntent);
}

I’m setting the proximity alerts this way:

    this.dh = new DataHelper(ShowMap.this);
    List<Pontos> list = this.dh.selectAll();
    int count = 0;
    for(Pontos p : list){
        markerPlaces.add(new OverlayItem(p.getName().toString(), Integer.toString(p.getId()), new GeoPoint(p.getLat(), p.getLng())));
        setProximityAlert(p.getName().toString(), p.getLat(), p.getLng(), p.getRadius(), p.getId(), count);
        count++;
    }

Note: p.getRadius() returns int value…

My problem is that is I use radius = 100f; it works fine, so I think I need to convert to float the same way, like the integer value is 10 so the float will be 10f.

Thanks!

Answer 1

It should be absolutely fine. There’s an implicit conversion from int to float, so if p.getRadius() returns int, that should be implicitly converted to float – which suggests the problem isn’t where you think it is.

• If it’s not compiling, you need to show the error message
• If it’s running, but not behaving the way you expect it to, you should explain how it’s not behaving as you expect. I strongly suspect you haven’t got the data you think you have…

You’ve said it works if you use 100f, but that your actual data is 10. So maybe the problem is that the proximity alert is estimating the distance as something like 50?