java - cannot resolve method getSupportActionBar().setDisplayHomeAsUpEnabled(true); -


i using android studios, however, unable add below 2 methods says cannot resolve them.

 getsupportactionbar().setdisplayhomeasupenabled(true);    getsupportactionbar().settitle("detail")

;

your issue you not extending appcompatactivity:

change:

 public class first extends fragmentactivity

with:

 public class first extends appcompatactivity

as can check in doc getsupportactionbar() method depends on appcompatactivity.


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