I need to replace a file with old version of it in destination device via bluetooth. I know that OBEX(FTP and OPP) profiles is necessary to use for this. But I don't know How can delete old version and copy new version of file in destination directory (java code).
Can you help me please?
To perform operations on files you whould firstly change to the directory where the file is. For exampe, if you need to get to /root/directory/subdir/ you should call setPath three times
setPath(""); // to get to /root/
setPath("directory") // get to /root/directory/
setPath("subdir") // get to root/directory/subdir/
All the code written below is for J2ME I use this method to set the path with separators (e.g. /root/dir/)
private void moveToDirectory(String dir) throws IOException {
RE r = new RE("/"); // where RE is me.regexp.RE
setDir("");
String[] dirs = r.split(dir);
for (int i = 1; i < dirs.length; i++) setDir(dirs[i]);
}
To delete a file you should open a PUT operation on it and close it, or use the delete method in ClientSession.
public void delete() throws IOException {
HeaderSet hs = cs.createHeaderSet(); // where cs is an opened ClientSession
hs.setHeader(HeaderSet.NAME, file); // file - is a filename String, no slashes should be used
cs.delete(hs);
}
If you need to replace a file you probably don't need to call delete method, just open OutputStream and write to it a new one
public OutputStream openOutputStream() throws IOException {
HeaderSet hs = cs.createHeaderSet();
hs.setHeader(HeaderSet.NAME, file);
Operation op = cs.put(hs); // Operation should be global, so you can close it after you done
return op.openOutputStream();
}
remember to close Operation after you done with the streams.
