Navigation Design using Kotlin

Android Studio

At the End Application Looks Like:

Screenshot1

Steps to Create Navigation Drawer

  1. Add Two Dependency In Gradle Scripts | build.gradle | module: Project_name.app

       implementation 'androidx.navigation:navigation-fragment-ktx:2.4.2'
   implementation 'androidx.navigation:navigation-ui-ktx:2.4.2'

  2. Create the New .xml file in Layout | Named as drawer_header

       <?xml version="1.0" encoding="utf-8"?>
   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
       android:layout_width="match_parent"
       android:layout_height="250dp"
       android:orientation="vertical"
       android:background="#5BBBE8">

     <ImageView
       android:layout_width="180dp"
       android:layout_height="180dp"
       android:src="@drawable/educationlogo" />

     <TextView
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:text="@string/navigation_design_a"
       android:textStyle="bold"
       android:padding="10dp"
       android:textSize="25sp"
       android:layout_marginTop="20dp"/>
 </LinearLayout>

Output:

image

  1. Add Image Asset in Drawable

image

Image asset Simply Go to Drawable | new | Image Asset Screenshot (259)

image

  1. Create menu directory in res folder res | new | directory

  2. now make new .xml layout in menu directory names as menu_drawer.xml

    <?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
   <group android:checkableBehavior="single">

     <item
         android:id="@+id/dashboard"
         android:icon="@drawable/ic_action_dash"
         android:title="@string/dashboard" />

     <item
         android:id="@+id/favourites"
         android:icon="@drawable/ic_action_fav"
         android:title="@string/favourites" />

     <item
         android:id="@+id/profile"
         android:icon="@drawable/ic_action_pro"
         android:title="@string/profile" />

     <item
         android:id="@+id/about"
         android:icon="@drawable/ic_action_info"
         android:title="@string/about" />

     <item
         android:id="@+id/setting"
         android:icon="@drawable/ic_action_sett"
         android:title="@string/settings" />
   </group>
 </menu>

Output: image

  1. Then Create the blank fragments com.surajpatil.navigationdrawer1 | new | fragments | blank Fragments

  2. Paste the Code in MainActivity.kt file

    <?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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"
android:id="@+id/drawerLayout"
tools:context=".MainActivity">

<androidx.coordinatorlayout.widget.CoordinatorLayout
 android:id="@+id/coordinatorLayout"
 android:layout_width="match_parent"
 android:layout_height="match_parent">

 <com.google.android.material.appbar.AppBarLayout
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:theme="@style/ThemeOverlay.AppCompat.Dark"
     android:elevation="0dp">

     <androidx.appcompat.widget.Toolbar
         android:id="@+id/toolbar"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:background="#5BBBE8"
         android:minHeight="?attr/actionBarSize"
         android:theme="@style/ThemeOverlay.AppCompat.Dark"
         app:layout_scrollFlags="scroll|enterAlways"/>

 </com.google.android.material.appbar.AppBarLayout>

 <FrameLayout
     android:id="@+id/frame"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>


<com.google.android.material.navigation.NavigationView
 android:id="@+id/navigationView"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:headerLayout="@layout/drawer_header"
 app:menu="@menu/menu_drawer"
 android:layout_gravity="start"/>

</androidx.drawerlayout.widget.DrawerLayout>

  3. Paste the Code in MainActivity.kt file

    package com.surajpatil.navigationdrawer1

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.MenuItem
import android.widget.FrameLayout
import android.widget.Toast
import androidx.appcompat.app.ActionBarDrawerToggle
import androidx.appcompat.widget.Toolbar
import androidx.coordinatorlayout.widget.CoordinatorLayout
import androidx.core.view.GravityCompat
import androidx.drawerlayout.widget.DrawerLayout
import com.google.android.material.navigation.NavigationView
import com.surajpatil.navigationdrawer1.fragments.*

class MainActivity : AppCompatActivity() {


lateinit var drawerLayout: DrawerLayout
lateinit var coordinatorLayout: CoordinatorLayout
lateinit var toolbar: Toolbar
lateinit var frameLayout: FrameLayout
lateinit var navigationView: NavigationView

var previousMenuItem : MenuItem?= null

 override fun onCreate(savedInstanceState: Bundle?) {
 super.onCreate(savedInstanceState)
 setContentView(R.layout.activity_main)

 drawerLayout = findViewById(R.id.drawerLayout)
 coordinatorLayout = findViewById(R.id.coordinatorLayout)
 toolbar = findViewById(R.id.toolbar)
 frameLayout = findViewById(R.id.frame)
 navigationView = findViewById(R.id.navigationView)

 // calling function setUpToolbar
 setUpToolbar()

 // by default open dashboard fragment
 openDashboard()

 val actionBarDrawerToggle = ActionBarDrawerToggle(
     this@MainActivity ,
     drawerLayout ,
     R.string.open_drawer ,
     R.string.close_drawer
 )

 drawerLayout.addDrawerListener(actionBarDrawerToggle)

 // back arrow and hamburger icon vice-virca
 actionBarDrawerToggle.syncState()

 navigationView.setNavigationItemSelectedListener {

     if(previousMenuItem != null)
     {
         previousMenuItem?.isChecked = false
     }

     it.isCheckable = true
     it.isChecked = true
     previousMenuItem = it

     when (it.itemId) {
         R.id.dashboard -> {
             Toast.makeText(this@MainActivity , "Clicked On Dashboard" , Toast.LENGTH_SHORT)
                 .show()

             supportFragmentManager.beginTransaction().replace(R.id.frame , DashboardFragment()).commit()

             supportActionBar?.title = "Dashboard"
             drawerLayout.closeDrawers()
         }
         R.id.favourites -> {
             Toast.makeText(this@MainActivity , "Clicked On Favourites" , Toast.LENGTH_SHORT)
                 .show()

             supportFragmentManager.beginTransaction().replace(R.id.frame , FavouritesFragment()).commit()

             supportActionBar?.title = "Favourites"
             drawerLayout.closeDrawers()
         }
         R.id.profile -> {
             Toast.makeText(this@MainActivity , "Clicked On Profile" , Toast.LENGTH_SHORT)
                 .show()

             supportFragmentManager.beginTransaction().replace(R.id.frame , ProfileFragment()).commit()

             supportActionBar?.title = "Profile"
             drawerLayout.closeDrawers()
         }
         R.id.setting -> {
             Toast.makeText(this@MainActivity , "Clicked On Settings" , Toast.LENGTH_SHORT)
                 .show()

             supportFragmentManager.beginTransaction().replace(R.id.frame , SettingsFragment()).commit()

             supportActionBar?.title = "Settings"
             drawerLayout.closeDrawers()
         }
         R.id.about -> {
             Toast.makeText(this@MainActivity , "Clicked On About App" , Toast.LENGTH_SHORT)
                 .show()

             supportFragmentManager.beginTransaction().replace(R.id.frame , AboutFragment()).commit()

             supportActionBar?.title = " About App"
             drawerLayout.closeDrawers()
         }
     }

     return@setNavigationItemSelectedListener true
 }
}

fun setUpToolbar() {
 setSupportActionBar(toolbar)
 supportActionBar?.title = "Toolbar Title"
 supportActionBar?.setHomeButtonEnabled(true)
 supportActionBar?.setDisplayHomeAsUpEnabled(true)
}


override fun onOptionsItemSelected(item: MenuItem): Boolean {
 val id = item.itemId
 if (id == android.R.id.home) {
     drawerLayout.openDrawer(GravityCompat.START)
 }
 return super.onOptionsItemSelected(item)
}

fun openDashboard()
{
 val fragment = DashboardFragment()
 val transcation = supportFragmentManager.beginTransaction()
 transcation.replace(R.id.frame, fragment)
 transcation.commit()
 supportActionBar?.title = "Dashboard"
 navigationView.setCheckedItem(R.id.dashboard)
}

override fun onBackPressed() {
 val frag = supportFragmentManager.findFragmentById(R.id.frame)

 when(frag)
 {
     !is DashboardFragment -> openDashboard()

     else -> super.onBackPressed()
  }
 }
}

GitHub

View Github