Display back button of action bar is not going back in Android
<p>I am developing an Android app. I am using ActionBar with AppCompactActivity. In my app, I add back button to action bar. But when I click on it, it is not going back to the previous activity. For example, I start activity 2 from activity 1. Activity 2 contains action bar with back button. But when I click on action bar back button of activity 2, it is not going back to activity 1. </p>

<p>This is how I set action bar for activity 2:</p>

<pre><code>public class EditProfileActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.edit_profile);
        Toolbar toolbar = (Toolbar)findViewById(R.id.profile_action_toolbar);
        setSupportActionBar(toolbar);
        setTitle("Edit Profile");
        ActionBar actionBar= getSupportActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
    }
}
</code></pre>

<p>This is how I started activity 2 from activity 1:</p>

<pre><code>Intent i = new Intent(MainActivity.this,SecondActivity.class);
                    startActivity(i);
</code></pre>

<p>It is not going back when I click this button</p>

<p><a href="https://i.stack.imgur.com/hrxKR.png" rel="noreferrer"><img src="https://i.stack.imgur.com/hrxKR.png" alt="enter image description here"></a></p>

<p>Why it is not going back?</p>