বিসমিল্লাহির রাহমানির রাহিম


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Output:




Another Design For Drawar Layout Without UX



All Code Here:

Main Activity.Kt Code:

package com.example.lecture12_kotlin

import android.os.Bundle
import android.support.design.widget.NavigationView
import android.support.v4.view.GravityCompat
import android.support.v7.app.ActionBarDrawerToggle
import android.support.v7.app.AppCompatActivity
import android.view.MenuItem
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.android.synthetic.main.app_bar_main.*
import android.support.v4.app.Fragment
import android.support.v4.app.FragmentManager


class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {

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


        val toggle = ActionBarDrawerToggle(
            this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close
        )
        drawer_layout.addDrawerListener(toggle)
        toggle.syncState()

        nav_view.setNavigationItemSelectedListener(this)
    }


    /**onBackPressed() Method er karone ...
     * Menu Jokhon open korbo ... open korar por Back Button e click dile .. back e chole jabe . ar
     * ei method jodi na thake tahole Back e click dile app Close Hoe jabe .
     */

    override fun onBackPressed() {
        if (drawer_layout.isDrawerOpen(GravityCompat.START)) {
            drawer_layout.closeDrawer(GravityCompat.START)
        } else {
            super.onBackPressed()
        }
    }



    override fun onNavigationItemSelected(item: MenuItem): Boolean {
        var fragment : Fragment? = null
        when (item.itemId) {
            R.id.nav_camera -> {
               fragment = Firstfragment()
            }
            R.id.nav_gallery -> {
               fragment = SecondFragment()
            }
            R.id.nav_slideshow -> {
               fragment = ThiedFragment()
            }
            R.id.nav_manage -> {
               fragment = FourthFragment()
            }

        }
        if(fragment!=null) {
            val fragmentManager: FragmentManager = supportFragmentManager
            fragmentManager.beginTransaction().replace(R.id.container_frame, fragment).commit()
        }
        drawer_layout.closeDrawer(GravityCompat.START)
        return true
    }
}