How to align radio button to center

Question

I want radio buttons in the image below to be center aligned. I have used gravity but it's not working.

I have used this code

   <RadioGroup
                    android:id="@+id/qualityRadioGroup"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:orientation="horizontal"
                    android:weightSum="5"
                    >


                    <RadioButton
                        android:id="@+id/qty1"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:gravity="center"
                        android:layout_gravity="center_vertical"
                        android:button="@drawable/radio_button_selector"
                        android:checked="false"
                        android:tag="1"/>


                    <RadioButton
                        android:id="@+id/qty2"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:padding="@dimen/s5dp"
                        android:button="@drawable/radio_button_selector"
                        android:tag="2"
                        />


                    <RadioButton
                        android:id="@+id/qty3"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:padding="@dimen/s5dp"
                        android:button="@drawable/radio_button_selector"
                        android:tag="3"
                        />


                    <RadioButton
                        android:id="@+id/qty4"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:padding="@dimen/s5dp"
                        android:button="@drawable/radio_button_selector"
                        android:tag="4"
                        />


                    <RadioButton
                        android:id="@+id/qty5"
                        android:layout_width="0dp"
                        android:layout_height="wrap_content"
                        android:layout_weight="1"
                        android:padding="@dimen/s5dp"
                        android:button="@drawable/radio_button_selector"
                        android:checked="false"
                        android:tag="5"/>


                </RadioGroup>

If i add radio buttons inside linear layout than it gets aligned to center but radio group functionality does not work in that situation.

I want center aligned radio buttons along with radio group feature i.e only one item should be selected at a time.

Answer 1

I have a workaround for this issue

    android:textSize="0.1sp"
    android:drawableTop="@drawable/selector_dashboard_button"
    android:button="@null"

Added these things instead of android:background=""

Here is my full layout code

<?xml version="1.0" encoding="utf-8"?>
<RadioGroup 
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal">

<RadioButton
    android:id="@+id/radioButton"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:button="@null"
    android:checked="true"
    android:drawableTop="@drawable/selector_dashboard_button"
    android:padding="10dp"
    android:tag="1"
    android:textSize="0.1sp" />

<RadioButton
    android:id="@+id/radioButton2"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:button="@null"
    android:drawableTop="@drawable/selector_inventory_button"
    android:padding="10dp"
    android:textSize="0.1sp" />

<RadioButton
    android:id="@+id/radioButton3"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:button="@null"
    android:drawableTop="@drawable/selector_check_list_button"
    android:padding="10dp"
    android:textSize="0.1sp" />

<RadioButton
    android:id="@+id/radioButton4"
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:button="@null"
    android:drawableTop="@drawable/selector_vendor_button"
    android:padding="10dp"
    android:textSize="0.1sp" />
</RadioGroup>

Here is the screenshot of my code