How to set a circular FAB button
<p><a href="https://i.stack.imgur.com/JTH2t.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JTH2t.jpg" alt="enter image description here"></a>I am trying to set a circular fab button which on clicked display other options in a circular but I am getting some error on setting the setImageDrawable
I am using compile time dependency
 compile 'com.oguzdev:CircularFloatingActionMenu:1.0.2' my java code is</p>

<pre><code>import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.ImageView;
import com.oguzdev.circularfloatingactionmenu.library.FloatingActionMenu;
import com.oguzdev.circularfloatingactionmenu.library.SubActionButton;

public class MainActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

   final FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            SubActionButton.Builder itemBuilder = new SubActionButton.Builder(MainActivity.this);
            ImageView itemIcon = new ImageView(MainActivity.this);
            int id = getResources().getIdentifier("yourpackagename:drawable/" + step-forward, null, null);
            itemIcon.setImageDrawable(R.drawable.button_action);
            SubActionButton button1 = itemBuilder.setContentView(itemIcon).build();

        FloatingActionMenu actionMenu = new FloatingActionMenu.Builder(MainActivity.this)
                .addSubActionView(button1)

                .attachTo(fab)
                .build();}
    });
}
</code></pre>

<p>}
What changes will i do to make the sub action button work
and when I use </p>

<pre><code> ImageView icon = new ImageView(this);
icon.setImageDrawable( ... );
FloatingActionButton actionButton = new FloatingActionButton.Builder(this)
.setContentView(icon)
.build();`
</code></pre>

<p>in place of <code>
     final FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
 fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {</code></p>

<p>declaring the fab button i get error in build
WHEN i used only one source  like this</p>

<pre><code> ImageView icon = new ImageView(this); // Create an icon
            icon.setImageDrawable(R.drawable.step_forward );
            FloatingActionButton actionButton = new     FloatingActionButton.Builder(this)
                    .setContentView(icon)
                    .build();
            SubActionButton.Builder itemBuilder = new   SubActionButton.Builder(MainActivity.this);
            ImageView itemIcon = new ImageView(MainActivity.this);
            int id = getResources().getIdentifier("yourpackagename:drawable/" + step-forward, null, null);
            itemIcon.setImageDrawable(R.drawable.button_action);
            SubActionButton button1 = itemBuilder.setContentView(itemIcon).build();

        FloatingActionMenu actionMenu = new FloatingActionMenu.Builder(MainActivity.this)
                .addSubActionView(button1)

                .attachTo(actionButton)
                .build();}
</code></pre>

<p>I am getting error in setting the Builder in    FloatingActionButton.Builder(this)
and error on setting the setImageDrawable</p>