Try this surely it will help you i already tried it
final Toast toast = Toast.makeText(getBaseContext(), "YOUR MESSAGE",Toast.LENGTH_SHORT);
toast.show();
new CountDownTimer(10000, 1000)
{
public void onTick(long millisUntilFinished) {toast.show();}
public void onFinish() {toast.cancel();}
}.start();
got the answer from this question please refer for full details
http://stackoverflow.com/questions/2220560/can-an-android-toast-be-longer-than-toast-length-long