Develop Reference

How to use weight for android:layout_marginLeft attribute android

I have the below code for navigation drawer and i am using the attribute
android:layout_marginLeft="620dp" to specify how much space(width) the drawer will occupy when the drawer layout is opened.
instead of hardcoding fixed width 620dp i want to specify like weight or is there any similar approach like weight for this attribute??
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/header"
android:layout_marginLeft="620dp"
android:fitsSystemWindows="true"
app:itemBackground="#android:color/transparent"
>
<ExpandableListView
android:id="#+id/navigationmenu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="130dp"
android:divider="#android:color/transparent"
android:listSelector="#android:color/transparent"
android:dividerHeight="0dp"
android:fitsSystemWindows="true"
android:background="#android:color/white">
</ExpandableListView>
</android.support.design.widget.NavigationView>

In the respective Activity/Fragment of the layout you can find the NavigationView by id:
dummyNavigationView = (NavigationView) findViewById(R.id.navigation);
and then you can access and change all properties associated to it, including layout_width and height ;)

Apply similar to this:
<?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_main2"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ExpandableListView
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_main2"
app:menu="#menu/activity_main2_drawer" />
</android.support.v4.widget.DrawerLayout>

My emulator shows just Listview on entire screen. even its width is limited to 240dp

I am using drawer layout and Listview is using as drawer.
My emulator just showing Listview as width set to match parent even it's set to 240dp.
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/drawer Layout"
android:background="#000000">
<ListView
android:layout_width="240dp"
android:layout_height="match_parent"
android:id="#+id/drawerList"
android:background="#color/colorAccent"/>
<FrameLayout
android:layout_width="250dp"
android:layout_height="match_parent"
android:id="#+id/fragmentContainer"
android:background="#ffffff"
android:choiceMode="singleChoice"
android:dividerHeight="0dp"
android:divider="#android:color/transparent"/>
</android.support.v4.widget.DrawerLayout>

Drawer layouts are usually hidden outside of the screen until you open them. Try opening the drawer by swiping from the side.

You must use NavigationView inside DrawerLayout and limit width in NavigationView.
Example layout structure is like that , there is 2 different usage of NavigationView :
<?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"
android:id="#+id/drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- you can add extra views in DrawerLayout -->
<include layout="#layout/content_home"/>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:layout_gravity="start"
app:menu="#menu/homepage_leftdrawer"/>
<!-- you can use listview, recyclerview etc in navigationview -->
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view2"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:fitsSystemWindows="false"
app:headerLayout="#layout/homepage_right_header"
android:layout_gravity="end">
<ListView
android:id="#+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:choiceMode="singleChoice"
android:dividerHeight="1dp"
android:layout_marginTop="80dp" />
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>

Android Dual Drawers - Navigation with Navigation View and Navigation Fragment

Developing a heritage tracking application !
I need to have a Navigation Drawer on the left and another Navigation Drawer with Checkbox.
The Left side Drawer is generated using the Android Studio and the right side code I have implemented.
Only one of them is getting displayed. How do i get the Navigation View on the right and Fragment Drawer on the left.
XML below
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:orientation="vertical">
<android.support.v4.widget.DrawerLayout
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
>
<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" />
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="org.janastu.dualnavigation.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="end"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>

If your app_bar_main is an AppBarLayout or Toolbar, then I would assume that:
You don't want it filling up the entire screen.
You don't want it being treated as the main content of the DrawerLayout.
On that note, try this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical">
<!-- Your Toolbar or Appbar. I've included what it should look like here
to point out that layout_height SHOULD NOT BE match_parent.-->
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary" />
<android.support.v4.widget.DrawerLayout
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!--Main Content-->
<FrameLayout
android:id="#+id/fullscreen_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"/>
<!-- Left side drawer layout -->
<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" />
<!-- Right side drawer layout. Important to note that fragment_navigation_drawer
should have a background colour. -->
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="org.janastu.dualnavigation.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="end"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
</LinearLayout>

How to add other layout within NavigationView

I'm trying to add Expandlistview within my NavigationView but it fails.
Can I add layout below header?
activity_main layout
<android.support.v4.widget.DrawerLayout
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="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/header">
<ExpandableListView
android:id="#+id/expanded_menu"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>

My solution would be .. if you are using header layout with specific height, for ex 200dp.. then in activity_main.xml include margin top 0f 210dp for expandable listview tag.. I hope you are not using menu for navigation view
<android.support.v4.widget.DrawerLayout
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="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/header">
<ExpandableListView
android:id="#+id/expanded_menu"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginTop="210dp" />
</android.support.design.widget.NavigationView>
</android.support.v4.widget.DrawerLayout>

you can use listview in navigation drawer list and append header view to the list which contains expandable listview. I am not sure but you can check it

Two Navigation Drawer on same Activity

Is it possible to configurate two Navigation Drawers on the same activity, one from the left and the other from the right?

You can use drawer layout
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- The navigation drawer -->
<ListView android:id="#+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
<ListView android:id="#+id/right_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:choiceMode="singleChoice"
android:divider="#android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
</android.support.v4.widget.DrawerLayout>
ALso check the documantation https://developer.android.com/training/implementing-navigation/nav-drawer.html
Make sure you are using toolbar not action bar

Yes you can add two ListView inside your drawer layout, one listview should have gravity start and other have end.

yes
Can use two navigationdrawer
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
tools:context="PackageName.ActivityName">
<ScrollView
android:id="#+id/scrol_lay"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!-- your layout -->
</ScrollView>
<!-- First navigation drawer -->
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view_main"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="#menu/navigation_main_menu"
app:headerLayout="#layout/navigation_header"/>
<!-- Second navigation drawer -->
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view_second"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end"
app:menu="#menu/navigation_menu"
app:headerLayout="#layout/navigation_header"/>
</android.support.v4.widget.DrawerLayout>

For maximum customization,
In your xml, you can use a FrameLayout as a container
<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">
<FrameLayout
android:id="#+id/contDrawer"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.design.widget.NavigationView>
Now in your Activity, you can replace it with any fragment
getSupportFragmentManager().beginTransaction().replace(R.id.contDrawer, SideBarCustomerFragment.newInstance()).commit();
Now for two users, you can create 2 different fragments, You can check my boilerplate code for reference
https://github.com/hamzaahmedkhan/AndroidStructure/blob/master/app/src/main/java/com/android/structure/activities/HomeActivity.java
https://github.com/hamzaahmedkhan/AndroidStructure/blob/master/app/src/main/java/com/android/structure/activities/BaseActivity.java