Clearing the Dhcp and dns cache of android

Question

Is there way to clear the dns cache of android device pogrammatically??.I search lot on google but didnt find anything regarding this.

Answer 1

As root, do in a shell:

ndc resolver flushdefaultif

And if you want to do it programatically, try this piece of code:

    public boolean reboot() {
    Process proc = null;
    try {
        proc = Runtime.getRuntime().exec("su");
        proc.getOutputStream().write(("ndc resolver flushdefaultif").getBytes());
        return proc.waitFor() == 0;
    } catch (IOException e) {
        e.printStackTrace();
    }
    catch (InterruptedException e) {
        e.printStackTrace();
    }

    return false;
}