How to show/Hide Navigation Drawer programmatically

Question

How can I use button to show/hide Navigation Drawer, I have used this SO link to create and manage Navigation Drawer.

Now i am using (Swipe to right from left - to show) and (Swipe from right to left - to hide)

How may I show/Hide Drawer using button highlighted in below screenshot:

header_home.xml:

<RelativeLayout             xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_height="wrap_content"     android:layout_width="fill_parent"     android:id="@+id/header_layout"      android:gravity="fill_horizontal"      android:layout_gravity="top|center">    <TextView     android:id="@+id/textHeader"     android:text="Home"     android:textColor="#ffffff"     android:gravity="center"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:background="@drawable/bg_header"  />   <ImageButton     android:id="@+id/btnDrawer"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:layout_marginLeft="10dp"     android:layout_alignParentLeft="true"     android:layout_centerVertical="true"     android:adjustViewBounds="true"     android:background="@drawable/icon_drawer"     android:contentDescription="@string/app_name"     /> 

Edited:

     btnMenu.setOnClickListener(new OnClickListener() {          @Override         public void onClick(View v) {             // TODO Auto-generated method stub             drawer.openDrawer(Gravity.LEFT);                         }     }); 

I know to close i have to call drawer.closeDrawer(Gravity.LEFT); but where i have to place this code ?

Answer 1

Grab a reference to the DrawerLayout and call closeDrawer(int) to close it and openDrawer(int) to open it. The int parameter refers to the gravity. In your case it should be GravityCompat.LEFT/ GravityCompat.START, because accordingly to the screenshot you posted, your DrawerLayout open and close on the left.

Answer 2

to Close Drawer:

drawer.CloseDrawer((int)GravityFlags.Left); 

to Open Drawer:

drawer.OpenDrawer((int)GravityFlags.Left);