add a bar in java rather than xml in Android

I want to show a fraction number, I found this XML code in many websites and it works well.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://ift.tt/nIICcg"
    android:id="@+id/fractionLayout"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >

    <EditText
        android:id="@+id/numinator"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginBottom="1dp"
        android:layout_marginLeft="1dp"
        android:layout_marginRight="1dp"
        android:layout_marginTop="0dp"
        android:background="@null"
        android:inputType="textNoSuggestions"
        android:textColor="#ff000000"
        android:textSize="15sp"
        android:windowSoftInputMode="stateAlwaysHidden" />

    <View
        android:layout_width="fill_parent"
        android:layout_height="1dip"
        android:background="#000000" />

    <EditText
        android:id="@+id/denominator"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_marginLeft="1dp"
        android:layout_marginRight="1dp"
        android:layout_marginTop="0dp"
        android:background="@null"
        android:inputType="textNoSuggestions"
        android:textColor="#ff000000"
        android:textSize="15sp"
        android:windowSoftInputMode="stateAlwaysHidden" />

</LinearLayout>

but I want to add the views dynamically in Java code, rather than inflater.inflate and then addView(layout). I can see how to add the Edittext:

EditText numinator = new EditText (this);
numinator.setText = "xxx";
numinator.setBackground = "xxx";
addView(numinator);

and so on... I cannot find methods in EditText that set its width to wrap content, but it seems to be default. But I cannot find any method in the class View to set its width to match parent or its height to 1dip or its background.