Adding the activity icon in wallpaper list

<?xml version="1.0" encoding="utf-8"?>

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

              android:layout_width="match_parent"

              android:layout_height="match_parent"

              android:minHeight="?android:attr/listPreferredItemHeight"

              android:gravity="center_vertical"

              android:paddingStart="?android:attr/listPreferredItemPaddingStart"

              android:paddingEnd="?android:attr/listPreferredItemPaddingEnd" >

    <ImageView

            android:id="@+android:id/icon"

            android:layout_width="40dp"

            android:layout_height="40dp"

            android:layout_gravity="center"

            android:scaleType="fitXY"

            android:layout_marginEnd="16dip"

            android:contentDescription="@null" />

    <TextView android:id="@+android:id/title"

              android:layout_width="wrap_content"

              android:layout_height="wrap_content"

              android:singleLine="true"

              android:textAppearance="@android:style/TextAppearance.Material.Subhead"

              android:ellipsize="marquee"

              android:fadingEdge="horizontal"

              android:layout_weight="1" />

</LinearLayout>

        // Add Preference items for each of the matching activities

        for (ResolveInfo info : rList) {

            Preference pref = new Preference(getPrefContext());

            pref.setLayoutResource(R.layout.preference_wallpaper_type);

            Intent prefIntent = new Intent(intent);

            prefIntent.setComponent(new ComponentName(

                    info.activityInfo.packageName, info.activityInfo.name));

            CharSequence label = info.loadLabel(pm);

            if (label == null) label = info.activityInfo.packageName;

            pref.setTitle(label);

            pref.setIcon(info.loadIcon(pm));

            parent.addPreference(pref);

        }

    }