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Display the icon at the right of the text in navigation view

sorry for my bad English.
I have a navigation drawer in some activities, I want the icon of each navigation view item to be placed to the right of that item's text and the whole item get right gravity.
Because I only used Persian in my app, I can not use "supportsRtl" in my code, if I use, it will look weird when I set device language to any rtl languages.
I think probably I can fix this with setting custom layout for navigation view, but I'm looking for a simpler way. this is my NavigationView XML code:
<android.support.design.widget.NavigationView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:menu="#menu/menu"
android:layout_gravity="end" />
Edited :
layoutDirection is a good answer but i used drawerLayout.openDrawer(GravityCompat.START);
for opening navigation drawer. now if device language be an rtl language this make app crash.

Make supportsRtl true and set the layout dirction to RTL on navigation View and LTR in other layouts

Just add android:layoutDirection="rtl" to your NavigationView, like this:
<android.support.design.widget.NavigationView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:menu="#menu/menu"
android:layoutDirection="rtl"
android:layout_gravity="end" />

how to make hamburger menu fully visible

by default half of hamburger is shown, as seen at the top left corner of the screenshot. I want to display full hamburger. code is taken from https://developer.android.com/training/implementing-navigation/nav-drawer.html. how can I do this?

Seems you are using very old technique to create Navigation Drawer. Its around 4 years old code and seems perfect regarding old version.
FYI, previously this kind of UI was done using DrawerLayout with ListView. But now android itself officially introduced sliding panel menu by introducing a newer concept called Navigation Drawer in which we combine DrawerLayout and NavigationView to achieve the desired output.
How to make hamburger menu fully visible?
SOLUTION:
Use AppCompatActivity instead of Activity and use AppCompat theme to achieve your desired output.
Use NavigationView instead of ListView.
Here is an example of NavigationView:
<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_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<!-- Your contents -->
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="#menu/my_navigation_items" />
</android.support.v4.widget.DrawerLayout>
Here is a very good tutorial: Android Sliding Menu using Navigation Drawer
Hope this will help~

Navigation drawer from top - Android

I am trying to implement navigation drawer in my app. I know it can be made on the left and right side as well. But is it possible to implement it in such a way that it will slide in from the Top or bottom?
Thanks!
<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">
</android.support.v4.widget.DrawerLayout>

There is no official reference for DrawerLayout to use "Bottom" or "Top" Gravity
look at here
http://developer.android.com/reference/android/support/v4/widget/DrawerLayout.html#openDrawer%28int%29
but you can try this also, It may hlp you
https://github.com/umano/AndroidSlidingUpPanel

How to create sliding layout like in Google Drive tablet app or Google+ notifications?

I'd like to create an extra-information view similar to that of the Google Drive app (below) on a tablet. When the info button is clicked, this view slides in from the rightcontaining a layout. Another example would be the Google+ app with its notifications slide-out panel:. The SlidingLayer by 6Wunderkinder almost works, but doesn't fade a semi-black background over the views behind the "drawer" and I haven't found another library that does this.
If anybody has any suggestions/solutions please let me know!
Also, I've already looked at this question and none of the answers suggested there are correct either.

For posterity, here's the answer to this question. As Steve Benett's suggestion led me to discover, the correct way to do this is to use two DrawerLayouts, nested within each other like so:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/drawer_navigation_bar"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.DrawerLayout
android:id="#+id/drawer_sidebar"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="#+id/fragment_main_content"
android:name="MainContentFragment"
android:layout_height="match_parent"
android:layout_width="match_parent" />
<fragment
android:id="#+id/fragment_sidebar"
android:name="SidebarFragment"
android:layout_width="300dp"
android:layout_height="match_parent"
android:layout_gravity="end" />
</android.support.v4.widget.DrawerLayout>
<fragment
android:id="#+id/fragment_navigation_bar"
android:name="NavigationFragment"
android:layout_height="match_parent"
android:layout_width="300dp"
android:layout_gravity="start" />
</android.support.v4.widget.DrawerLayout>
The innermost DrawerLayout contains the main content of the Activity, whether it be a fragment or some other layout components. fragment_sidebar is the fragment that will be swiped out from the right. Then, on the top-level DrawerLayout you have the fragment_nagivation_bar which houses the left Drawer's ListView or whatever.
Then, in the Activity Java code you have:
mDrawerLayoutLeft= (DrawerLayout) findViewById(R.id.drawer_navigation_bar);
mDrawerLayoutRight = (DrawerLayout) findViewById(R.id.drawer_sidebar);
mDrawerLayoutLeft.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
mDrawerLayoutRight.setDrawerShadow(R.drawable.sidebar_shadow, GravityCompat.END);
An optional addition (but recommended, for consistency of UX) is to hide the other Drawer when one is opened, so your screen doesn't consist solely of Drawers.
I hope this has helped somebody!

This is the DrawerLayout. Have a look at the design guide, which illustrates the behavior well.
If you want to use / customize the "semi-black background" use DrawerLayout.setDrawerShadow() with a drawable. Google hands out a set of drawables here. Download the ActionBar Icon Pack and look for the drawable_shadow.9.png.
If you want that the menu appears from the right, set android:layout_gravity="end" as a property in the second child of the layout.

Set Background Color of Navigation Drawer

I wanted to set the background color of my Navigation drawer in java but it seems as setBackgroundColor and all similar methods have no effect.
Only the XML line android:background="#color/mycolor" is working. If remove the xml line and try one of the methods the drawer just stays transparent.
Any ideas?

In your activity_main.xml include the following
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/navigation_drawer_header"
app:menu="#menu/menu_drawer"
android:background="#color/color_navigation_list_background"
app:itemIconTint="#color/color_selector_navigation_item"
app:itemTextColor="#color/color_selector_navigation_item"/>

I just solved my own problem.
I totally forgot that it's not the DrawerLayout I want to set the background to, but the ListView inside.
I admit I made it somewhat hard for you guys without adding code to my post -.-'
So instead of:
private DrawerLayout mDrawerLayout;
(...)
mDrawerLayout.setBackgroundResource(int);
I had to do this:
private ListView mDrawerList;
(...)
mDrawerList.setBackgroundResource(int);

cast your navigation drawer to navigationView and do as follows
navigationView.setBackgroundColor(getResources().getColor(R.color.colorPrimaryDark));