“Back button” using getSupportActionbar and appcompat v7 toolbar

Question

I\'m using the new toolbar from the Appcompat V7 library and I\'m making an application with navigation drawer and with fragments.

In some fragments I don\'t want to sho

Answer 1

Add setDisplayHomeAsUpEnabled(true)

    Toolbar toolbar  = findViewById(R.id.toolbar);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
        actionBar.setDisplayHomeAsUpEnabled(true);
    }

Handle the back button

   public boolean onSupportNavigateUp() {
    onBackPressed();
    return true;
}