Create Circular Floating Action Menu in Android.

                      Here I am going to explain how to create Circular Floating Action menu(FAB) in Android.

Step 1) activity_main.xml


<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
    </android.support.design.widget.AppBarLayout>

   <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email" />

</android.support.design.widget.CoordinatorLayout>


//To increase the size of SubActionButton click here

                                    

Step 2)Mainactivity.class

import android.os.Bundle;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;
import com.oguzdev.circularfloatingactionmenu.library.FloatingActionMenu;
import com.oguzdev.circularfloatingactionmenu.library.SubActionButton;


public class MainActivity extends AppCompatActivity
{

    private Toolbar toolbar;
   

    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        toolbar= (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

       

        SubActionButton.Builder itemBuilder = new SubActionButton.Builder(this);
        
        ImageView item1 = new ImageView(this);
        item1.setImageResource(R.mipmap.ic_launcher);

        ImageView item2 = new ImageView(this);
        item2.setImageResource(R.mipmap.ic_launcher);

        ImageView item3 = new ImageView(this);
        item3.setImageResource(R.mipmap.ic_launcher);

        SubActionButton button1 = itemBuilder.setContentView(item1).build();
        SubActionButton button2 = itemBuilder.setContentView(item2).build();
        SubActionButton button3 = itemBuilder.setContentView(item3).build();


      
        //attach the sub buttons
         new FloatingActionMenu.Builder(this)
                .addSubActionView(button1)
                .addSubActionView(button2)
                .addSubActionView(button3)
                .attachTo(fab)
                .build();

  }

Step 3)build.gradle


apply plugin: 'com.android.application'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.0"

    defaultConfig {
        applicationId "com.floatinglabel"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
          minifyEnabled false
          proguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'
        }
    }
  
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.0.1'
    compile 'com.android.support:design:23.0.1'
    compile 'com.oguzdev:CircularFloatingActionMenu:1.0.2'
}

Happy Coding :)