How to set icon in ListPreference's item in android

I want to set the icon in ListPreference items in android.

What to write in ListPreference or where to write to set the list items icon?

You need to use a custom layout for your ListPreference.

eg:

<android.preference.ListPreference
                android:layout="@layout/your_custom_layout"
                 ....
/>

And add what you want to your custom layout.

eg:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:minHeight="?android:attr/listPreferredItemHeight"
    android:gravity="center_vertical"
    android:paddingRight="?android:attr/scrollbarSize">

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:layout_margin="@dimen/preferences_layout_margin">

        <ImageView android:id="@+id/yourIconId"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true" /> <!-- here i've added an ImageView for icon -->

        <TextView android:id="@android:id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:singleLine="true"
            android:textAppearance="?android:attr/textAppearanceMedium"
            android:ellipsize="marquee"
            android:fadingEdge="horizontal"
            android:layout_toRightOf="@+id/iconImageView"
            android:layout_marginLeft="@dimen/preferences_icon_margin" />

        <TextView android:id="@android:id/summary"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@android:id/title"
            android:layout_alignLeft="@android:id/title"
            android:textAppearance="?android:attr/textAppearanceSmall"
            android:maxLines="2" />

    </RelativeLayout>
    <!-- Preference should place its actual preference widget here. -->
    <LinearLayout android:id="@android:id/widget_frame"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:gravity="center_vertical"
        android:orientation="vertical" />

</LinearLayout>