android - How to add child Views to parent RelativeLayout with percentage of width and height -

i have parent relativelayout want use container hold number of item views. imagine shuffling pack of cards , seeing visual stack of cards, skewed each other, on top of 1 stack. have achieved iterating on collection, inflaying layout xml file template each "card" , populating items details, before adding view parent relativelayout, setting x, y, , rotation properties.

this works, each card same width , height parent relativelayout if not rotated, take entire parent layout. ones rotated, corners disappear out of bounds of relativelayout , cannot see them.

what want each child view have width , height of 90% of parent relativelayout rotating of layered views on stack, can see corners of ones beneath coming out sides. cannot figure out how though.

this parent relativelayout

<relativelayout              android:id="@+id/layoutview"             android:layout_alignparenttop="true"             android:layout_centerhorizontal="true"             android:layout_above="@id/tayle_buttons"             android:layout_height="wrap_content"              android:layout_width="fill_parent"             android:background="#005500"/> 

this oncreateview() method of fragment

view rootview = inflater.inflate(r.layout.fragment_tayleresults, container, false);                      windowwidth = m_windowmanager.getdefaultdisplay().getwidth();                screencenter = windowwidth / 2;               parentview = (relativelayout) rootview.findviewbyid(r.id.layoutview); 

and code populates each child view (unnecessary code removed)

final view m_view = inflater.inflate(r.layout.fragment_tayle, null);                     relativelayout m_toplayout = (relativelayout) m_view.findviewbyid(r.id.t_layout);                               //populate view control values, eg textviews, imageviews here  m_view.setx(0);                  m_view.sety(0);                  m_view.settag(i);                     if (i == 0) { m_view.setrotation(0); }          else if (i == 1) { m_view.setrotation(-5); }          else if (i == 2) { m_view.setrotation(3); }          else if (i == 3) { m_view.setrotation(7); }          else if (i == 4) { m_view.setrotation(-2); }          else if (i == 5) { m_view.setrotation(5); }                  parentview.addview(m_view); 

lastly, child layout each "card"

<?xml version="1.0" encoding="utf-8"?> <relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/t_layout"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:padding="4dip"      android:weightsum="2"     android:background="@drawable/tayle_border"     >  <imageview          android:id="@+id/genre"         android:layout_height="60dp"         android:layout_width="50dp"         android:layout_alignparenttop="true"         android:layout_alignparentright="true" />     ...and on 

for knowing parent's width , height can implement view tree observer. code modified snippet here:

viewtreeobserver viewtreeobserver = relativelayout.getviewtreeobserver(); if (viewtreeobserver.isalive()) {  viewtreeobserver.addongloballayoutlistener(new ongloballayoutlistener() {     @override     public void ongloballayout() {       view.getviewtreeobserver().removeongloballayoutlistener(this);       viewwidth = relativelayout.getwidth();       viewheight = relativelayout.getheight();     }   }); } 

now have width , height of view in pixels. can scale imageview accordingly. here relativelayout.getwidth() returns pixels calling if before or during layout-pass return 0. viewtreeobserver used inorder mitigate it.