How to change Width of Android's Switch track?

Set your desired width of switch in the attribute:

android:switchMinWidth

for example:

<Switch
    android:id="@+id/switchVisitAgain"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_vertical"
    android:layout_margin="1dp"
    android:checked="false"
    android:gravity="center_vertical"
    android:switchMinWidth="56dp"
    android:textOff=""
    android:textOn=""
    android:thumb="@drawable/round_button"
    android:track="@drawable/button_black" />

Here is my solution. I removed the texts, set the padding of the track and define the switchMinWidth properties. This is my xml:

<Switch
    android:id="@+id/theSwitchId"
    android:textOn=""
    android:textOff=""
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:thumbTextPadding="5dp"
    android:switchMinWidth="40dp"
    android:layout_gravity="right|center_vertical" />