android - Find corner cell of TileMap? -


problem when detecting corner cell of tile map???

private void gettiles(int startx, int starty, int endx, int endy, array<rectangle> tiles) {  tiledmaptilelayer layer=(tiledmaptilelayer)worldrenderer.map.getlayers().getlayer(0);  tiledmaptilelayer layer1 = (tiledmaptilelayer)worldrenderer.map.getlayers().getlayer(1);          layer_height=layer1.getheight();         layer_width=layer1.getwidth();          leftcornercell=layer1.getcell(0, 0);

it calculate screen x/y while want give map x/y.

and gives result nullpointer exception.... meeans not finding cell @ perticuler position.

how find out corner cell of tilemap in libgdx???


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