CODEWITHSUNDEEP
androidviewfragment
ixx
ixx

Reputation: 32273

Get size of fragment's parent view to size children programmatically

I have a Layout containing a fragment. I set width of Layout to let's say 300dip.

I want to calculate the width of the children programmatically in relation to the 300dip of the parent.

I can't do it in XML since it has some "tricks" and using weigths or RelativeLayout will not work and I have to use maths.

Here is the fragment with the containing layout...

<LinearLayout 
    android:layout_width="300dip"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    >

    <fragment
        android:id="@+id/tabbar"
        android:name="com.test.MyFragment"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />
</LinearLayout>

In MyFragment there's the method:

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    Log.d("test", "container: "  + container);
    View view = inflater.inflate(R.layout.mylayout, container, false);
    Log.d("test", "view width: "  + view.getWidth());

    //do things with view

    return view;
}

I get the outputs container: null and view width: 0 and I can't find any onMeasure method in the fragment or similar.

Upvotes: 0

Views: 7838

Answers (3)

Muhammed Haris
Muhammed Haris

Reputation: 380

Use Handler will get height and width. but this is not a proper way. 

new Handler().postDelayed(new Runnable() {
      @Override
      public void run() {
         Log.d("test", "view width: "  + view.getWidth());
      }
    },1000);

Upvotes: 0

Christine
Christine

Reputation: 5575

onCreateView is called before your layouts have been inflated, so they have no height or width. If you want to fiddle with how layouts and views are drawn, you can create your own view, extending View, and implement onLayout(); If you Google, there's plenty of examples of that.

Upvotes: 1

thomas.cloud
thomas.cloud

Reputation: 963

I think you can find the dimensions of your parent view (LinearLayout) programmatically in the onActivityCreated method:

@Override 
public void onActivityCreated(Bundle savedInstanceState){
     super.onActivityCreated(savedInstanceState);

     myActivityView =  (LinearLayout)  
             getActivity().findViewById(((View) getView().getParent()).getId());

     myFragment = (RelativeLayout) getView().findViewById(R.layout.mylayout);
//Change RelativeLayout to whatever your fragment is using
}

So then myActivityView should be your parent view.

EDIT

You could then use a ViewTreeObserver in onActivityCreated to get the dimensions of your parent view. myFragment should be your fragment, so you could place it relative to the dimensions returned from myActivityView. Good luck.

Upvotes: 0

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