Android: Padding not working in RelativeLayout -

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i want have padding between description text , switch paddingright property not working. why?

enter image description here

<relativelayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:id="@+id/layoutlayout"     android:layout_below="@+id/layoutheader"     android:layout_margintop="15dp"     android:layout_marginleft="15dp"     android:layout_marginright="15dp">      <switch         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:id="@+id/widgetshortswitch"         android:layout_centervertical="true"         android:layout_alignparentright="true" />      <textview         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="this long description text should not overlay."         android:textcolor="#000000"         android:paddingright="15dp"         android:id="@+id/widgetshorttextview"         android:layout_centervertical="true"         android:layout_alignparentleft="true"         /> </relativelayout>

try this... 

<?xml version="1.0" encoding="utf-8"?>      <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"         android:id="@+id/layoutlayout"         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:layout_below="@+id/layoutheader"         android:layout_marginleft="15dp"         android:layout_marginright="15dp"         android:layout_margintop="15dp"         android:weightsum="1">          <textview             android:id="@+id/widgetshorttextview"             android:layout_width="0"             android:layout_height="wrap_content"             android:paddingbottom="5dp"             android:layout_weight="0.85"             android:paddingright="15dp"             android:text="this long description text should not overlay."             android:textcolor="#000000" />          <switch             android:id="@+id/widgetshortswitch"             android:layout_width="0"             android:layout_height="wrap_content"             android:layout_alignparentright="true"             android:layout_centervertical="true"             android:layout_weight="0.15" />     </linearlayout>

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