getQueryHint
Returns the hint text that will be displayed in the query text field.
The displayed query hint is chosen in the following order:
- Non-null value set with setQueryHint
- Value specified in XML using
app:queryHint
- Valid string resource ID exposed by the SearchableInfo via getHintId
- Default hint provided by the theme against which the view was inflated
Return
the displayed query hint text, or null
if none set queryHint