ProgressDialog not showing while performing a task

Question

I have a backup routine that copies everything from one folder to an external SD card which works perfectly. I\'m trying to get an nice popup dialog box that shows when it\'

Answer 1

You run long running tasks in a Thread or with an AsyncTask. Then your ProgressDialog will show up.

Do something like:

public void doBackup(View view) throws IOException{
    final ProgressDialog pd = new ProgressDialog(this);
    pd.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    pd.setMessage("Running backup. Do not unplug drive");
    pd.setIndeterminate(true);
    pd.setCancelable(false);
    pd.show();
    Thread mThread = new Thread() {
        @Override
        public void run() {
            File source = new File("/mnt/extSdCard/DirectEnquiries"); 
            File dest = new File("/mnt/UsbDriveA/Backup");
            copyDirectory(source, dest);
            pd.dismiss();
        }
    };
    mThread.start();
}