How to get fragment width? [duplicate]

Question

Here is my layout.I need to get the width in CategoryFragment.

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" > <LinearLayout android:id="@+id/category_list" android:layout_width="150dp" android:layout_height="match_parent" android:background="@color/white_background" android:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:padding="10dp" android:text="@string/pianodule_list" android:textSize="16sp" /> <com.handmark.pulltorefresh.library.PullToRefreshListView android:id="@id/refreshable_listview" android:layout_width="match_parent" android:layout_height="match_parent" android:choiceMode="singleChoice" android:descendantFocusability="beforeDescendants" android:divider="@null" /> </LinearLayout> <View android:layout_width="0.1dp" android:layout_height="match_parent" android:background="@color/divider_line" /> <fragment android:name="com.srefu.frag.CategoryFragment" android:layout_width="match_parent" android:layout_height="match_parent" android:tag="category" /> </LinearLayout>

so in onViewCreated() of CategoryFragment I try several way to achieve it but all not work.

@Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); View v = view; // View v = getView(); int w1 = v.getWidth(); //return 0 int w2 = v.getLayoutParams().width; //return NullPointerException int w3 = v.getMeasuredWidth(); //return 0 }

how should i do can i get width of fragment?Any help will is appreciated .Thanks. :)

Jorge Gil · Accepted Answer · 2020-07-29 19:09:23Z

23

you are calling getWidth() too early. Try below mentioned code. Hope it helps you

view.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { mScrollView.post(new Runnable() { public void run() { view.getHeight(); //height is ready } }); } });

edited Jul 29, 2020 at 19:09

Jorge Gil

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answered Aug 20, 2014 at 5:11

Raj Karekar

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2 Comments

Folyd Over a year ago

Fantastic,it work for me!I agree with you that i calling getWith() too early.Thanks.:)

Shibakaneki Over a year ago

Don't forget to remove the globallayoutlistener once you get the height, otherwise you may have a leak. You should use removeOnGlobalLayoutListener right after getting the height, if you just need it one time.

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