LinearLayout put child at the right side

Question

I m trying to have a textview and a button in linear layout with horizontal orientation. The textview should appear at the starting and the button should appear at the end. I thought giving gravity right to the button would do the trick but the buttons doesn't move to the right side. I m thinking if I should probably use relative layout?

<\LinearLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 
    android:orientation="horizontal">

    <TextView
        android:id="@+id/productPriceTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Rs 3579.0" 
        />

    <Button
        android:id="@+id/buyNowButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="right"
        android:text="Buy Now" />
<\/LinearLayout>

Answer 1

My way (using a RelativeLayout):

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >
    <TextView
        android:id="@+id/productPriceTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:text="Rs 3579.0"
    />
    <Button
        android:id="@+id/buyNowButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:text="Buy Now"
    />
</RelativeLayout>

See how I explicitly align the TextView to the Parent's left side and the Button to the Parent's right side

You can then center the TextView vertically in the RelativeLayout, by setting:

android:layout_centerVertical="true"

in the TextView itself

---

Newr OS versions may prefer this:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    >
    <TextView
        android:id="@+id/productPriceTextView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:text="Rs 3579.0"
    />
    <Button
        android:id="@+id/buyNowButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentEnd="true"
        android:text="Buy Now"
    />
</RelativeLayout>