question: public void fill ( View view ) { validateNotNullableView ( view ) ; try { if ( view instanceof ViewGroup ) { ViewGroup viewGroup = ( ViewGroup ) view ; for ( int i = 0 ; i < viewGroup . getChildCount ( ) ; i ++ ) { View child = viewGroup . getChildAt ( i ) ; fill ( child ) ; } } else { if ( mIds == null ) { fillView ( view ) ; } else if ( mIds . contains ( view . getId ( ) ) ) { fillView ( view ) ; } } } catch ( Exception e ) { e . printStackTrace ( ) ; } finally { mFaker = null ; } }
target:  Fill a view with random data