title: streambuilder is rebuilding again and again when keyboard popup or closes
body: <p>Here I was stuck in a problem. I have a column of widgets with a stream builder and a text field. When i try to input some text, the keyboard pops up and then the stream builder rebuilds again or when the keyboard closes, the stream builder rebuilds again. As i am building a chat screen, I don't want to rebuild the stream builder again as it increases in number of reads.</p>
  <p>Any sort of suggestions helpful.</p>