Open Navigation Drawer Programmatically in Android

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Hello Friends, Today I am going to share a code to Open Navigation Drawer Programmatically in Android. And to do so you just need DrawerLayout’s reference and then you can call openDrawer(int) function on it to open drawer. You can also close Drawer programmatically using closeDrawer(int) function but you don’t have to close Drawer because it automatically get closed when you click outside drawer. openDrawer(int) function is useful when you have a custom toolbar and you want to open drawer on a click of an icon in toolbar.

So, Here is code

MainActivity.java

package com.zatackcoder.navigationshowhide;

import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

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

        final DrawerLayout drawer = findViewById(R.id.drawer_layout);
        ImageView menuIcon = (ImageView) findViewById(R.id.menu_icon);
        menuIcon.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view) {
                drawer.openDrawer(Gravity.LEFT);
            }
        });
        NavigationView navigationView = findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    @SuppressWarnings("StatementWithEmptyBody")
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Handle navigation view item clicks here.
        int id = item.getItemId();

        if (id == R.id.nav_home) {
            // Handle the camera action
        } else if (id == R.id.nav_gallery) {

        } else if (id == R.id.nav_slideshow) {

        } else if (id == R.id.nav_tools) {

        } else if (id == R.id.nav_share) {

        } else if (id == R.id.nav_send) {

        }

        DrawerLayout drawer = findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

package com.zatackcoder.navigationshowhide;

import android.os.Bundle;

import android.support.design.widget.NavigationView;

import android.support.v4.view.GravityCompat;

import android.support.v4.widget.DrawerLayout;

import android.support.v7.app.AppCompatActivity;

import android.view.Gravity;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.ImageView;

public class MainActivity extends AppCompatActivity

implements NavigationView.OnNavigationItemSelectedListener {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final DrawerLayout drawer = findViewById(R.id.drawer_layout);

ImageView menuIcon = (ImageView) findViewById(R.id.menu_icon);

menuIcon.setOnClickListener(new View.OnClickListener(){

@Override

public void onClick(View view) {

drawer.openDrawer(Gravity.LEFT);

}

});

NavigationView navigationView = findViewById(R.id.nav_view);

navigationView.setNavigationItemSelectedListener(this);

}

@Override

public void onBackPressed() {

DrawerLayout drawer = findViewById(R.id.drawer_layout);

if (drawer.isDrawerOpen(GravityCompat.START)) {

drawer.closeDrawer(GravityCompat.START);

} else {

super.onBackPressed();

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

@Override

public boolean onOptionsItemSelected(MenuItem item) {

// Handle action bar item clicks here. The action bar will

// automatically handle clicks on the Home/Up button, so long

// as you specify a parent activity in AndroidManifest.xml.

int id = item.getItemId();

//noinspection SimplifiableIfStatement

if (id == R.id.action_settings) {

return true;

}

return super.onOptionsItemSelected(item);

}

@SuppressWarnings("StatementWithEmptyBody")

@Override

public boolean onNavigationItemSelected(MenuItem item) {

// Handle navigation view item clicks here.

int id = item.getItemId();

if (id == R.id.nav_home) {

// Handle the camera action

} else if (id == R.id.nav_gallery) {

} else if (id == R.id.nav_slideshow) {

} else if (id == R.id.nav_tools) {

} else if (id == R.id.nav_share) {

} else if (id == R.id.nav_send) {

}

DrawerLayout drawer = findViewById(R.id.drawer_layout);

drawer.closeDrawer(GravityCompat.START);

return true;

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.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:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">

    <include
        layout="@layout/app_bar_main"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer" />

</android.support.v4.widget.DrawerLayout>

<?xml version="1.0" encoding="utf-8"?>

<android.support.v4.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:id="@+id/drawer_layout"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:fitsSystemWindows="true"

tools:openDrawer="start">

<include

layout="@layout/app_bar_main"

android:layout_width="match_parent"

android:layout_height="match_parent" />

<android.support.design.widget.NavigationView

android:id="@+id/nav_view"

android:layout_width="wrap_content"

android:layout_height="match_parent"

android:layout_gravity="start"

android:fitsSystemWindows="true"

app:headerLayout="@layout/nav_header_main"

app:menu="@menu/activity_main_drawer" />

</android.support.v4.widget.DrawerLayout>

app_bar_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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=".MainActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="5dp"
            android:layout_marginLeft="5dp"
            android:layout_marginRight="5dp"
            android:layout_marginBottom="5dp"
            android:background="@android:drawable/editbox_background"
            app:layout_scrollFlags="scroll|enterAlways">

            <ImageView
                android:id="@+id/menu_icon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentLeft="true"
                android:layout_centerVertical="true"
                android:src="@drawable/ic_action_menu" />

            <EditText
                android:id="@+id/ed_home_searchbar"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_toLeftOf="@+id/mic_icon"
                android:layout_toRightOf="@+id/menu_icon"
                android:background="@android:color/transparent"
                android:hint="App Name"
                android:imeOptions="actionSearch"
                android:paddingTop="10dp"
                android:paddingBottom="10dp"
                android:paddingLeft="25dp"
                android:paddingRight="25dp"
                android:singleLine="true"
                android:textColor="#FA615E5E"
                android:textColorHint="#FAA59D9D"
                android:textStyle="bold"
                android:focusable="false"/>

            <ImageView
                android:id="@+id/mic_icon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:src="@android:drawable/ic_btn_speak_now"/>

        </RelativeLayout>

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

    <include layout="@layout/content_main" />

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

<?xml version="1.0" encoding="utf-8"?>

<android.support.design.widget.CoordinatorLayout 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=".MainActivity">

<android.support.design.widget.AppBarLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:theme="@style/AppTheme.AppBarOverlay">

<RelativeLayout

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_gravity="center_horizontal"

android:layout_marginTop="5dp"

android:layout_marginLeft="5dp"

android:layout_marginRight="5dp"

android:layout_marginBottom="5dp"

android:background="@android:drawable/editbox_background"

app:layout_scrollFlags="scroll|enterAlways">

<ImageView

android:id="@+id/menu_icon"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_centerVertical="true"

android:src="@drawable/ic_action_menu" />

<EditText

android:id="@+id/ed_home_searchbar"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:layout_toLeftOf="@+id/mic_icon"

android:layout_toRightOf="@+id/menu_icon"

android:background="@android:color/transparent"

android:hint="App Name"

android:imeOptions="actionSearch"

android:paddingTop="10dp"

android:paddingBottom="10dp"

android:paddingLeft="25dp"

android:paddingRight="25dp"

android:singleLine="true"

android:textColor="#FA615E5E"

android:textColorHint="#FAA59D9D"

android:textStyle="bold"

android:focusable="false"/>

<ImageView

android:id="@+id/mic_icon"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_centerVertical="true"

android:src="@android:drawable/ic_btn_speak_now"/>

</RelativeLayout>

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

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

content_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".MainActivity"
    tools:showIn="@layout/app_bar_main">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Click on Top Left Menu Icon to Open Drawer"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

<?xml version="1.0" encoding="utf-8"?>

<android.support.constraint.ConstraintLayout 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"

app:layout_behavior="@string/appbar_scrolling_view_behavior"

tools:context=".MainActivity"

tools:showIn="@layout/app_bar_main">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Click on Top Left Menu Icon to Open Drawer"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintLeft_toLeftOf="parent"

app:layout_constraintRight_toRightOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

nav_header_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="@dimen/nav_header_height"
    android:background="@drawable/side_nav_bar"
    android:gravity="bottom"
    android:orientation="vertical"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:theme="@style/ThemeOverlay.AppCompat.Dark">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:contentDescription="@string/nav_header_desc"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        app:srcCompat="@mipmap/ic_launcher_round" />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="@dimen/nav_header_vertical_spacing"
        android:text="@string/nav_header_title"
        android:textAppearance="@style/TextAppearance.AppCompat.Body1" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/nav_header_subtitle" />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout 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="@dimen/nav_header_height"

android:background="@drawable/side_nav_bar"

android:gravity="bottom"

android:orientation="vertical"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingBottom="@dimen/activity_vertical_margin"

android:theme="@style/ThemeOverlay.AppCompat.Dark">

<ImageView

android:id="@+id/imageView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:contentDescription="@string/nav_header_desc"

android:paddingTop="@dimen/nav_header_vertical_spacing"

app:srcCompat="@mipmap/ic_launcher_round" />

<TextView

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:paddingTop="@dimen/nav_header_vertical_spacing"

android:text="@string/nav_header_title"

android:textAppearance="@style/TextAppearance.AppCompat.Body1" />

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="@string/nav_header_subtitle" />

</LinearLayout>

Video

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