<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/layout"
    android:orientation="horizontal">
    <TextView
     android:id="@+id/lblText"   
     android:layout_height="wrap_content"
     android:layout_width="wrap_content"
     android:layout_gravity="center"
     android:padding="3dp"
    />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/layout"
    android:orientation="horizontal">
    <TextView
     android:id="@+id/lblText"   
     android:layout_height="wrap_content"
     android:layout_width="wrap_content"
     android:layout_gravity="center"
     android:padding="3dp"
    />
</LinearLayout>

Set TextView width to match_parent to fix horizontal alignment
Set TextView width to match_parent to fix horizontal alignment

It fix horizontal center alignment in my case.