Android Material Design suggest change

Add a Navigation Drawer

Navigation Drawers are used to navigate to top-level destinations in an app.

Make sure that you have added design support library in your build.gradle file under dependencies:

dependencies {
    // ...
    compile 'com.android.support:design:25.3.1'
}

Next, add the DrawerLayout and NavigationView in your XML layout resource file.

The DrawerLayout is just a fancy container that allows the NavigationView, the actual navigation drawer, to slide out from the left or right of the screen. Note: for mobile devices, the standard drawer size is 320dp.

<!-- res/layout/activity_main.xml -->
<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/navigation_drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start">
    <! -- You can use "end" to open drawer from the right side -->

    <android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true">

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

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay" />

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

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

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_drawer"
        android:layout_width="320dp"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:headerLayout="@layout/drawer_header"
        app:menu="@menu/navigation_menu" />

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

Now, if you wish, create a header file that will serve as the top of your navigation drawer. This is used to give a much more elegant look to the drawer.

<!-- res/layout/drawer_header.xml -->
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="190dp">

    <ImageView
        android:id="@+id/header_image"
        android:layout_width="140dp"
        android:layout_height="120dp"
        android:layout_centerInParent="true"
        android:scaleType="centerCrop"
        android:src="@drawable/image" />

    <TextView
        android:id="@+id/header_text_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/header_image"
        android:text="User name"
        android:textSize="20sp" />

</RelativeLayout>

It is referenced in the NavigationView tag in the app:headerLayout="@layout/drawer_header" attribute.

This app:headerLayout inflates the specified layout into the header automatically. This can alternatively be done at runtime with:

// Lookup navigation view
NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_drawer);
// Inflate the header view at runtime
View headerLayout = navigationView.inflateHeaderView(R.layout.drawer_header);

To automatically populate your navigation drawer with material design-compliant navigation items, create a menu file and add items as needed. Note: while icons for items aren’t required, they are suggested in the Material Design specification.

It is referenced in the NavigationView tag in the app:menu="@menu/navigation_menu" attribute.

<!-- res/menu/menu_drawer.xml -->
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/nav_item_1"
        android:title="Item #1"
        android:icon="@drawable/ic_nav_1" />
    <item
        android:id="@+id/nav_item_2"
        android:title="Item #2"
        android:icon="@drawable/ic_nav_2" />
    <item
        android:id="@+id/nav_item_3"
        android:title="Item #3"
        android:icon="@drawable/ic_nav_3" />
    <item
        android:id="@+id/nav_item_4"
        android:title="Item #4"
        android:icon="@drawable/ic_nav_4" />
</menu>

To separate items into groups, put them into a <menu> nested in another <item> with an android:title attribute or wrap them with the <group> tag.

Now that the layout is done, move on to the Activity code:

// Find the navigation view
NavigationView navigationView = (NavigationView) findViewById(R.id.navigation_drawer);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
    @Override
    public boolean onNavigationItemSelected(MenuItem item) {
        // Get item ID to determine what to do on user click
        int itemId = item.getItemId();
        // Respond to Navigation Drawer selections with a new Intent
        startActivity(new Intent(this, OtherActivity.class));
        return true;
    }
});

DrawerLayout drawer = (DrawerLayout) findViewById(R.id.navigation_drawer_layout);
// Necessary for automatically animated navigation drawer upon open and close
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, "Open navigation drawer", "Close navigation drawer");
// The two Strings are not displayed to the user, but be sure to put them into a separate strings.xml file.
drawer.addDrawerListener(toggle);
toogle.syncState();

You can now do whatever you want in the header view of the NavigationView

View headerView = navigationView.getHeaderView();
TextView headerTextView = (TextView) headerview.findViewById(R.id.header_text_view);
ImageView headerImageView = (ImageView) headerview.findViewById(R.id.header_image);
// Set navigation header text
headerTextView.setText("User name");
// Set navigation header image
headerImageView.setImageResource(R.drawable.header_image);

The header view behaves like any other View, so once you use findViewById() and add some other Views to your layout file, you can set the properties of anything in it.

You can find more details and examples in the dedicated topic.

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