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Check if a file was modified on the server |
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This tip shows how to check if a file was modified on the server!
URL u =null;
long timestamp = 0;
getImage(getDocumentBase(), "test.gif");
try {
u = new URL(getDocumentBase(), "test.gif");
URLConnection uc = u.openConnection();
uc.setUseCaches(false);
/*
** use timestamp has a reference, re-open an URLConnection
** to the same file to check if the timestamp is different
** with the getLastModified() method.
*/
timestamp = uc.getLastModified();
}
catch (Exception e) {
e.printStackTrace();}
}
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