如何在OpenLayers中刷新TMS层？

Question

I have a TMS layer that looks something like this:

var v = 1;
my_tms = new OpenLayers.Layer.TMS(
    "My TMS",
    "my_mapserver.php?v="+my_var+"&",
     { transparent: 'true', type:'png', getURL:get_my_url }
);

Where my_mapserver.php returns map tiles according to the value of v.

The app allows users to change v, and I simply want to refresh the my_tms layer, however, so far the only way I can get it to refresh is by destroying the map and recreating it.

I thought I could just do something like this:

v = 2;
my_tms = new OpenLayers.Layer.TMS(
    "My TMS",
    "my_mapserver.php?v="+my_var+"&",
     { transparent: 'true', type:'png', getURL:get_my_url }
);
my_tms.redraw();

However, these tiles are not getting requested when I redraw().

Any help is appreciated.

Answer 1

由于TMS图层是从Grid图层继承的，因此您可以尝试调用clearGrid（）方法来删除所有现有的图块，然后再调用spiralTileLoad（）来加载新的图块。

Answer 2

layer.redraw(); , OpenLayers.Strategy.Refresh and clearGrid() didn't help me in reloading tiles of OpenLayers.Layer.TMS layer in OpenLayers 2.13.1, but helped:

layer.mergeNewParams({});