HomeEnabled Activity

BaseHomeEnabledActivity.java

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.support.v4.app.TaskStackBuilder;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;

/**
 * @author Mostafa Gazar <mmegazar@gmail.com>
 */
public abstract class BaseHomeEnabledActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        if (id == android.R.id.home) {
            Intent upIntent = NavUtils.getParentActivityIntent(this);
            upIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            if (NavUtils.shouldUpRecreateTask(this, upIntent)) {
                TaskStackBuilder.create(this)
                        .addNextIntentWithParentStack(upIntent)
                        .startActivities();
            } else {
                NavUtils.navigateUpTo(this, upIntent);
            }
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

}