Android Google Maps SnapshotReadyCallback error

Question

I want to take a snapshot of my map:

SnapshotReadyCallback callback = new SnapshotReadyCallback() {
    Bitmap bitmap;
    @Override
    public void onSnapshotReady(Bitmap snapshot) {
        // TODO Auto-generated method stub
        bitmap = snapshot;
    }
};

map.snapshot(callback);

But it gives me this error:

width and height must be > 0

try to give a height and width for bitmap object. – Piyush Aug 14 '13 at 11:54 — Piyush, Aug 14 '13 at 11:54
ok, but how should i do that ? – David Aug 14 '13 at 11:59 — David, Aug 14 '13 at 11:59
When do you call `GoogleMap.snapshot`? – MaciejGórski Aug 14 '13 at 12:10 — MaciejGórski, Aug 14 '13 at 12:10

score 1 · Accepted Answer · edited May 23 '17 at 10:31

1

You are making a mistake of calling snapshot too early. Before all Views are layed out, they have a size of 0 by 0.

It's best to use this function on users action, e.g. in some Button's onClick.

If you need it after the map is shown, you can try with ViewTreeObserver. Check this answer: https://stackoverflow.com/a/7735122/2183804.

edited May 23 '17 at 10:31

Community

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answered Aug 14 '13 at 12:15

MaciejGórski

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ok i made it for in a button listener. if i run it it does nothing i think or i don't know where is it save the image... – David Aug 14 '13 at 12:22
@David Bitmap is returned to you via `Bitmap snapshot` parameter. The easiest way to check it worked, is e.g. setting background of the `Button` to this `Bitmap`. – MaciejGórski Aug 14 '13 at 12:25

Android Google Maps SnapshotReadyCallback error

1 Answers1