Robotium long click

I have a simple calculator application. In my test project, I try to long click on the editview to see copy-paste options. I used both clickLongOnScreen and clickLongOnView functions but none of them worked. What might be the problem?

    public void testGesture(){
    int secondnumber = 60;

    EditText alan = (EditText) solo.getView(R.id.editText1);
    solo.clearEditText(alan);
    solo.enterText(alan,String.valueOf(secondnumber));
    solo.sleep(2000);

    solo.clickLongOnScreen(1024,207,3000);
    solo.sleep(5000);
    solo.clickLongOnView(alan, 2000);



}