Xamarin Android中的动态嵌套相对布局

这是针对Category的,我通过在布局中编写.axml看起来很好.现在,当用户点击类别时,应该在其点击上生成相同的外观并且它正在动态创建,但子内容与父内容重叠,如下所示：

为了使子相对布局我写下面的代码：

RelativeLayout childTaxonomylayout = new RelativeLayout( this );
childTaxonomylayout.Id = Convert.ToInt32( data.Value.Id );
childTaxonomylayout.SetOnClickListener( this );
var param = new RelativeLayout.LayoutParams( ViewGroup.LayoutParams.MatchParent,ViewGroup.LayoutParams.WrapContent );
param.AddRule(LayoutRules.AlignParentBottom);
param.AddRule( LayoutRules.AlignParentLeft );
childTaxonomylayout.LayoutParameters = param;


TextView textViewChild = new TextView( this );
textViewChild.Text = data.Value.Item.Name;
textViewChild.SetPadding( 20,10,10 );
textViewChild.Id = Convert.ToInt32( data.Value.Id );

RelativeLayout.LayoutParams rlp2 = new RelativeLayout.LayoutParams( RelativeLayout.LayoutParams.FillParent,RelativeLayout.LayoutParams.WrapContent );
rlp2.AddRule( LayoutRules.AlignParentBottom );
rlp2.AddRule( LayoutRules.AlignParentLeft );
textViewChild.LayoutParameters = rlp2;

childTaxonomylayout.AddView( textViewChild );
if (data.Value.Children.Count != 0) {
    var _imgViewClose = new ImageView( this );
    _imgViewClose.Id = Convert.ToInt32( "123" + data.Value.Id.ToString() );
    _imgViewClose.SetImageresource( resource.Drawable.ic_right );

    RelativeLayout.LayoutParams rlp1 = new RelativeLayout.LayoutParams(30,20 );
    rlp1.AddRule( LayoutRules.AlignParentBottom );
    rlp1.AddRule( LayoutRules.AlignParentright );
    childTaxonomylayout.AddView( _imgViewClose );
}

childLayout.AddView( childTaxonomylayout );

请让我知道我应该更改什么才能使我的用户界面正确无误.谢谢