Android, iOS style radio button

***** flatdesign_radiobutton_left.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked= "false">
        <shape xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="@color/white"/>
            <stroke
                android:width="1dp"
                android:color="#7F7F7F"/>
            <padding
                android:bottom="5dp"
                android:left="5dp"
                android:right="1dp"
                android:top="5dp"/>
            <corners
                android:bottomLeftRadius="7dp"
                android:bottomRightRadius="0dp"
                android:topLeftRadius="7dp"
                android:topRightRadius="0dp"/>
        </shape>
    </item>
    <item android:state_checked= "true">
        <shape xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="#7F7F7F"/>
            <stroke
                android:width="1dp"
                android:color="#7F7F7F"/>
            <padding
                android:bottom="5dp"
                android:left="5dp"
                android:right="5dp"
                android:top="5dp"/>
            <corners
                android:bottomLeftRadius="7dp"
                android:bottomRightRadius="0dp"
                android:topLeftRadius="7dp"
                android:topRightRadius="0dp"/>
        </shape>

    </item>
</selector>

***** flatdesign_radiobutton_right.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked= "false">
        <shape xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="@color/white"/>
            <stroke
                android:width="1dp"
                android:color="#7F7F7F"/>
            <padding
                android:bottom="5dp"
                android:left="5dp"
                android:right="5dp"
                android:top="5dp"/>
            <corners
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="7dp"
                android:topLeftRadius="0dp"
                android:topRightRadius="7dp"/>
        </shape>
    </item>
    <item android:state_checked= "true">
        <shape xmlns:android="http://schemas.android.com/apk/res/android"
            android:shape="rectangle">
            <solid android:color="#7F7F7F"/>
            <stroke
                android:width="1dp"
                android:color="#7F7F7F"/>
            <padding
                android:bottom="5dp"
                android:left="5dp"
                android:right="5dp"
                android:top="5dp"/>
            <corners
                android:bottomLeftRadius="0dp"
                android:bottomRightRadius="7dp"
                android:topLeftRadius="0dp"
                android:topRightRadius="7dp"/>
        </shape>
    </item>
</selector>

 *** radio button group

  <RadioGroup
            android:id="@+id/segmentedOrder"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:layout_centerInParent="true"
            android:background="@android:color/transparent">
            <RadioButton
                android:id="@+id/radioNew"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginRight="-1dp"
                android:layout_weight="1"
                android:text="     item1   "
                android:checked="true"
                android:background="@drawable/flatdesign_radiobutton_left"
                android:button="@android:color/transparent"
                />
            <RadioButton
                android:id="@+id/radioRating"
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_marginLeft="-1dp"
                android:layout_weight="1"
                android:text="   item2     "
                android:background="@drawable/flatdesign_radiobutton_right"
                android:button="@android:color/transparent"
                />
        </RadioGroup>