One important Android widget is AutoCompleteTextView which, as its name indicate, is a text view which allows the user to select text from among a list of possibilities based on the initial text typed:
As shown above, the user types “Ven” and is shown Venus on which the user can click on.
A second useful widget is the SeekBar which allows the user to select one value by dragging (here, a font size):
Finally, it is possible to embed a web browser within any Android application using a WebView. Note that this is different from launching a web browser activity (which launches the native Android web browser):