BottomNavogation

MainActivity.java

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.design.widget.BottomNavigationView;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.widget.Toast;
 public class MainActivity extends AppCompatActivity {
  @Override 
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   BottomNavigationView bottomNavigationView = (BottomNavigationView) 15 findViewById(R.id.navigation);
   bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
    @Override 
     public boolean onNavigationItemSelected(@NonNull MenuItem item) {
    
    switch (item.getItemId()) {
     
     case R.id.action_item1:
       //Write the logic of Item1 Click Here 
       Toast.makeText(getApplication(), "Item 1 Clicked", Toast.LENGTH_SHORT).show();
      
      break;
      
     case R.id.action_item2:
       //Write the logic of Item1 Click Here 
       Toast.makeText(getApplication(), "Item 2 Clicked", Toast.LENGTH_SHORT).show();
      
      break;
      
     case R.id.action_item3:
       //Write the logic of Item1 Click Here
       Toast.makeText(getApplication(), "Item 3 Clicked", Toast.LENGTH_SHORT).show();
      
      break;
    }
    
    return true;
   }
  });
 }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>  
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    xmlns:tools="http://schemas.android.com/tools" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     tools:context="arjun.example.com.materialdesign.MainActivity"> 
    <TextView 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:text="Bottom Navigation"
     android:gravity="center"
     android:textSize="20sp"/>
    
    <android.support.design.widget.BottomNavigationView
     android:id="@+id/navigation" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content"
     android:layout_alignParentBottom="true" 
     android:background="@color/colorPrimary"
     app:itemIconTint="#FFFFFF"
     app:itemTextColor="#FFFFFF" 
     app:menu="@menu/bottom_navigation_items"/>
</RelativeLayout>

bottom_navigation_item.xml

<?xml version="1.0" encoding="utf-8"?>  
<menu
    xmlns:android="http://schemas.android.com/apk/res/android">  
    <item 
     android:id="@+id/action_item1"
     android:icon="@drawable/ic_chevron_left_black_24dp"
     android:title="item_1"/>  
    <item 
     android:id="@+id/action_item2" 
     android:icon="@drawable/ic_lightbulb_outline_black_24dp"
     android:title="item_2"/>  
    <item 
     android:id="@+id/action_item3" 
     android:icon="@drawable/ic_chevron_right_black_24dp" 
     android:title="item_3"/>  
</menu> ​

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Author : Android Code Tutorial