Inflate a custom view from XML, then set her height and witdh programmatically

I'm loosing myself in an custom size View problem since a couple of days. After some long research, I finally decide to ask your help... please ! T_T

In my app, I created a custom View with the XML calendrieradmin_day.xml :

<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://ift.tt/nIICcg"
    android:id="@+id/CalendrierAdmin_Day_Event_TableRow"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <!--  <TextView
        android:id="@+id/CalendrierAdmin_Day_Event_TextView_Name"
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:gravity="center" />-->
</TableRow>

For now, it is a simple TableRow, but I'll need to add some other things in the future. (The commented TextView, for example).

I made three classes for using it : Row, EventRow and EmptyRow. Row is abstract and EventRow and EmptyRow inherit of Row. Also, Row inherit of TableRow.

I want to add several EventRow and EmptyRow in a TableLayout and I need to resize them dynamically.

In the constructor method of EmptyRow and EventRow, I call an init() method :

private void init(Context c, TableLayout root) {    
    root = (TableLayout)LayoutInflater.from(c).inflate(R.layout.calendrieradmin_day_event, root, true);

    LinearLayout.LayoutParams lp = (LinearLayout.LayoutParams) root.getLayoutParams();

    lp.height = getHeightOfMinute() * getDuree();
    lp.width = getTheWidth();

    /*
    Some other stuff
    ...
    ...
    */

    this.setLayoutParams(lp);

    root.addView(this);

    setOnClickListener(this);
    setOnLongClickListener(this);
}

root is my TableLayout I pass in the constructor. getHeightOfMinute() and getDuree() work correctly and give me the right sizes. I used to use the inflate() method like inflate(R.layout.calendrieradmin_day_event, null, false) and it worked fine, but Eclipse gave me a warning, telling me I shouldn't pass null as the RootView argument. Although everything worked fine, I begun to search another solution and this is where I gone so far...

I used the setMinimumHeight() and setMinimumWidth() method to rezise my EventRow and EmptyRow. It works, but I think there is a better way to do that. I tried A LOT of solutions but I messed up ! I think there is something I still not catched about the functioning of inflate() and/or LayoutParams.

Could you help me ? Thanks in advance !

PS: Sorry for the bad english, I'm french.