How to set Navigation Drawer to be opened from rig

Question

First of all I know this question appeared here before but after trying a lot i still didn't succeed. I working on the example from Android Developers site.

I'm trying to set the menu to be opened from right to left instead of how its implementing in the example (from left to right). In addition I want to move the open menu button to the right side of the action bar. I also red some answers here, for example in this answer.

I try to change the gravity of the views and the layouts but I get the error:

no drawer view found with absolute gravity LEFT

Can you please help me to figure out what is the problem in my code and what should I change in order to set the menu to be opened from the right, and to move the action bar button to the right side?

the xml code is here:

<android.support.v4.widget.DrawerLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/drawer_layout"
    android:layout_gravity="right"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <FrameLayout
        android:id="@+id/content_frame"
        android:layoutDirection="rtl"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

    <ListView android:id="@+id/left_drawer"
        android:layout_width="200dp"
        android:layout_height="match_parent"
        android:layout_gravity="right"
        android:choiceMode="singleChoice"
        android:divider="@android:color/transparent"
        android:dividerHeight="10dp"
        android:background="#111"/>

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

Answer 1

Add this code to manifest:

<application android:supportsRtl="true">

and then write this code on Oncreate:

getWindow().getDecorView().setLayoutDirection(View.LAYOUT_DIRECTION_RTL);

It works for me. ;)

Answer 2

SOLUTION

---

your_layout.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="end">

    <include layout="@layout/app_bar_root"
        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="end"
        android:fitsSystemWindows="true"
        app:itemTextColor="@color/black"
        app:menu="@menu/activity_root_drawer" />

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

YourActivity.java:

@Override
protected void onCreate(Bundle savedInstanceState) {
//...
toolbar = (Toolbar) findViewById(R.id.toolbar);

drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
            this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();

toolbar.setNavigationOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            if (drawer.isDrawerOpen(Gravity.RIGHT)) {
                drawer.closeDrawer(Gravity.RIGHT);
            } else {
                drawer.openDrawer(Gravity.RIGHT);
            }
        }
    });
//...
}

Answer 3

In your main layout set your ListView gravity to right:

android:layout_gravity="right" 

Also in your code :

mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
            R.drawable.ic_drawer, R.string.drawer_open,
            R.string.drawer_close) {

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item != null && item.getItemId() == android.R.id.home) {
            if (mDrawerLayout.isDrawerOpen(Gravity.RIGHT)) {
                mDrawerLayout.closeDrawer(Gravity.RIGHT);
            } 
            else {
                mDrawerLayout.openDrawer(Gravity.RIGHT);
            }
        }
        return false;
    }
};

hope it works :)

Answer 4

Take a look at this: slide ExpandableListView at DrawerLayout form right to left

I assume you have the ActionBarDrawerToggle implemented, the trick is to override the onOptionsItemSelected(MenuItem item) method inside the ActionBarDrawerToggle object with this:

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item != null && item.getItemId() == android.R.id.home) {
            if (mDrawer.isDrawerOpen(Gravity.RIGHT)) {
                mDrawer.closeDrawer(Gravity.RIGHT);
            } else {
                mDrawer.openDrawer(Gravity.RIGHT);
            }
            return true;
        }
        return false;
    }

make sure and call this from onOptionsItemSelected(MenuItem item) in the Activity:

@Override
public boolean onOptionsItemSelected(MenuItem item) {

if(mDrawerToggle.onOptionsItemSelected(item)) {
    return true;
}

return super.onOptionsItemSelected(item);
}

This will allow you to use the the home button functionality. To move the button to the right side of the action bar you will have to implement a custom action item, and maybe some other stuff to get it to work like you want.

Answer 5

This answer is useful to set the navigation be open from right to left, but it has no solution to set its icon to be right side. This code can fix it. If you give it the drawer as its first param and ViewCompat.LAYOUT_DIRECTION_RTL as its second param, the entier layout will be set to RTL. It is a quick and simple solution, but I don't think it can be a correct solution for who that want to only set the menu to be opened from right to left and set its icon to be on right side. (Although, it's depended to your purpose.) However, I suggest giving the toolbar instead of the drawer. In this way just the toolbar has become RTL. So I think the combination of these 2 answers can exactly do what you want.

According to these descriptions, your code should be like this:

(Add these lines to onCreate method)

final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); // Set it final to fix the error that will be mention below.

    ViewCompat.setLayoutDirection(toolbar, ViewCompat.LAYOUT_DIRECTION_RTL);

    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (drawer.isDrawerOpen(Gravity.RIGHT))
                drawer.closeDrawer(Gravity.RIGHT);
            else
                drawer.openDrawer(Gravity.RIGHT);
        }
    });

Notice that you should make drawer final, otherwise you will get this error:

Variable 'drawer' is accessed from within inner class, needs to be declared final

And don't forget to use end instead of start in onNavigationItemSelected method:

drawer.closeDrawer(GravityCompat.END);

and in your activity_main.xml

<android.support.v4.widget.DrawerLayout 
   android:id="@+id/drawer_layout"
   tools:openDrawer="end">

   <android.support.design.widget.NavigationView
      android:id="@+id/nav_view"
      android:layout_gravity="end"/>
</android.support.v4.widget.DrawerLayout>

Answer 6

the main issue with the following error:

no drawer view found with absolute gravity LEFT

is that, you defined the

android:layout_gravity="right"

for list-view in right, but try to open the drawer from left, by calling this function:

mDrawerToggle.syncState();

and clicking on hamburger icon!

just comment the above function and try to handle open/close of menu like @Rudi said!