CODEWITHSUNDEEP
androidxamarinxamarin.androidnavigationviewandroid-navigationview
Ryan Alford
Ryan Alford

Reputation: 7594

NavigationView - Setting `app:itemBackground` causes menu items to lose start padding

I am running into an issue when setting the app:itemBackground for the NavigationView. I am trying to create a custom background for the selected menu item. The custom background works, but when I use it, it seems to kill the start padding of the menu items.

Without the background(default)

enter image description here

With the custom background enter image description here

You can see that the menu items are flush to the left of the menu when the itemBackground is set.

Here is the relevant xml...

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:id="@+id/DrawerLayout"
    android:fitsSystemWindows="false">
<!-- your content layout -->
    <include
        layout="@layout/MainLayout" />
    <android.support.design.widget.NavigationView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:background="@color/primary_color"
        android:id="@+id/NavigationView"
        app:itemTextColor="?android:textColorPrimary"
        app:headerLayout="@layout/navigationheaderlayout"
        app:itemBackground="@drawable/navigation_item_selector"
        app:menu="@menu/navigation_menu" />
</android.support.v4.widget.DrawerLayout>

selector

<selector xmlns:android="http://schemas.android.com/apk/res/android">
   <item android:drawable="@drawable/navigation_item_selected_background" android:state_selected="true" />
   <item android:drawable="@drawable/navigation_item_selected_background" android:state_pressed="true" />
   <item android:drawable="@drawable/navigation_item_selected_background" android:state_checked="true" />
   <item android:drawable="@drawable/navigation_item_not_selected_background" />
</selector>

selected backgroud

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item 
        android:left="0dp" 
        android:right="2dp" 
        android:drawable="@color/accent_color" />

    <item 
        android:left="2dp" 
        android:right="2dp" 
        android:drawable="@color/navigation_selected_item_color" />
</layer-list>

not selected background

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
   <item>
       <shape android:shape="rectangle">
           <solid android:color="@android:color/transparent" />
       </shape>
   </item>
</layer-list>

Has anybody run into something like this before?

Upvotes: 0

Views: 2655

Answers (2)

gecko
gecko

Reputation: 1

Add for Android 4 versions a padding at the end of the layer-list in your drawable.

Like this way:

<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item 
        android:left="0dp" 
        android:right="2dp" 
        android:drawable="@color/accent_color" />

    <item 
        android:left="2dp" 
        android:right="2dp" 
        android:drawable="@color/navigation_selected_item_color" />
    <item>
        <shape android:shape="rectangle" >
            <padding android:left="12dp" android:right="12dp"/>
        </shape>
    </item>
</layer-list>

Upvotes: 0

Harry Aung
Harry Aung

Reputation: 1632

Please note below solution will work for pre-lollipop versions. But will add extra padding in lollipop and above. Please apply different theme for different versions to avoid this.

After setting app:theme, padding left issue is fixed.

<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="false"
        android:background="@drawable/your_menu_bg"
        app:itemBackground="@drawable/your_menu_item_bg"
        app:headerLayout="@layout/nav_header_main"
        app:menu="@menu/activity_main_drawer"
        app:theme="@style/NavigationDrawerStyle"
        app:itemIconTint="@color/your_color"
        app:itemTextColor="@android:color/white"
        app:itemTextAppearance="?android:attr/textAppearanceLarge"/>

This is my custom theme.

<style name="NavigationDrawerStyle">
    <item name="android:paddingLeft">20dp</item>
</style>

How to apply different themes for different versions? Check the other link below.

Change theme according to android version

Upvotes: 1

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