Android - Set Layout_Gravity programmatically for LinearLayout

Question

I've got the following problem: I implemented a HorizontalScrollView which contains in one case a LinearLayout and an ImageView. In this case the image is about 50% of the screen width. So I want to center it. Unfortunately the only way I found to center it is, to use layout_gravity="center" on the LinearLayout.

Here's my xml:

<HorizontalScrollView
            android:layout_gravity="center"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content">

        <LinearLayout
                android:orientation="horizontal"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content">

        <ImageView                    
                android:src="@drawable/myImg"
                android:layout_width="wrap_content"
                android:adjustViewBounds="true"
                android:layout_height="150dp"/>

        </LinearLayout>

    </HorizontalScrollView>

But I need to set the layout_gravity programmatically. Does anybody has an idea how I can achieve this or knows a different way? All the things I found via Google are not working for me like this post.

Thanks!

have you tried encapsultaing the ImageView in a LinearLayout and setting the parameters for that layout as shown in the post you visited? — ClaireG, Jul 31 '13 at 09:00

Vipul Purohit · Accepted Answer · 2013-12-11T05:42:06.327

39

Do somethings like this :

   LayoutParams lp = new LayoutParams();
   lp.gravity= Gravity.CENTER_HORIZONTAL; 
   myImg.setLayoutParams(lp);

UPDATE : Another way to do this :

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
            params.weight = 1.0f;
            params.gravity = Gravity.CENTER;

            imageView.setLayoutParams(params);

edited Dec 11 '13 at 05:42

answered Jul 31 '13 at 09:01

Vipul Purohit

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So, for the gravity value to work, the element must have MATCH_WIDTH set or occupy the full width of its parent. If this is not the case, then it must have a weight value of 100%(which makes its occupy the parent fully), only then does setting gravity work. – somedev Oct 11 '17 at 09:51

score 8 · Answer 2 · answered Jul 31 '13 at 09:27

8

Put the ImageView in a FrameLayout like this:

Removed extra code

ImageView image = new ImageView(mContext);
image.setLayoutParams(new FrameLayout.LayoutParams(width, height, gravity));

More info here.

answered Jul 31 '13 at 09:27

ClaireG

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2

not working... but anyway, why shall i put the imageview inside a `FrameLayout` and put FrameLayout.Params to the imageView and not the parent? – Ron Jul 31 '13 at 14:32
2

the third parameter is not `gravity` it's `weight`! – Bruce Lee Mar 26 '17 at 11:12

score 1 · Answer 3 · edited Nov 13 '16 at 10:39

1

I think , this one will work for you

FrameLayout.LayoutParams layoutParams = new ScrollView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
 layoutParams1.gravity(YourGravity);
yourImage.setLayoutParams(layoutParams);

edited Nov 13 '16 at 10:39

alp_the_developer

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answered Nov 10 '16 at 14:25

Mohamed Abd Al-Mohsen

11
4

Android - Set Layout_Gravity programmatically for LinearLayout

3 Answers3

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