How can i set inflated view width, half of it's parent?

Question

I inflate the view in this method:

public TabViewHolder onCreateViewHolder(ViewGroup parent, int viewType){
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.tabs_layout, parent, false);
    return new TabViewHolder(view);
}

Because of " False ", my LinearLayout doesn't attach to it's parent therefore there is no parent and i can't use Layer_Weight (I tested with view.getParent() . it returns null). Because when i use Layer_Weight in combination with "Layer_Width = 0dip", LinearLayout disappears.

If i use " True " as third parameter( view.getParent() returns the parent), i get this error:

" The specified child already has a parent. You must call removeView() on the child's parent first. ".

This is the parent:

<android.support.v7.widget.RecyclerView android:id="@+id/tabBar" style="@style/tabBar"/>

And this is the parent style:

<style name="tabBar">
     <item name="android:layout_width">match_parent</item>
     <item name="android:layout_height">0dip</item>
     <item name="android:layout_weight">0.1</item>
     <item name="android:weightSum">1</item>
     <item name="android:background">@color/headerBg</item>
</style>

And this is LinearLayout, the child style:

<style name="tabLayout">
     <item name="android:layout_width">0dip</item>
     <item name="android:layout_height">match_parent</item>
     <item name="android:layout_weight">0.5</item>
     <item name="android:orientation">horizontal</item>
     <item name="android:gravity">center_vertical</item>
 </style>

And this is the grandchild, TextView:

<style name="tabItem">
     <item name="android:layout_width">wrap_content</item>
     <item name="android:layout_height">wrap_content</item>
</style>

How can i set the LinearLayout width, half of it's parent?

Appreciate it in advance.

Answer 1

I used this way to achieve the goal.

I sent the recyclerView, the parent, as a parameter to the tabBarAdapter which inflates the linearLayout, the child, and in this adapter, set linearLayout's width to half width of recyclerView in the onCreateViewHolder method.

view.getLayoutParams().width = tabBar.getWidth()/2;

I think, this is against " Loose Coupling " (I wanted to separate styles from code completely).