title: ProgressBar(Dialog) inside a Button android
body: <p>Can someone suggest how to implement <strong>progress dialog</strong> inside a <code>Button</code>
  for example , when I click on submit <code>Button</code> then <strong>progress dialog</strong> occurs inside <code>Button</code> for showing loading
  I don't want to block other <strong>UI</strong> elements</p>