Develop Reference

Working with relative layout in android XML

I am trying to create a layout in XML something along of the lines of http://i.stack.imgur.com/aPoeU.png but I am little confused as to how to position the buttons in that format. I have created the buttons and tried different things like alignParentBottom, alignParentRight etc but I can't seem to get it the way I want it to be. Can someone please help me out?
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="Button" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button1"
android:text="Button" />
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button2"
android:text="Button" />
<Button
android:id="#+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button3"
android:text="Button" />

We can manage it in all screen and in all resolution by weight_sum
Paste below code in your xml
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#000"
android:weightSum="1" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#bebebe"
android:layout_weight="0.30"
android:text="Button1" />
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="2dp"
android:layout_weight="0.20"
android:background="#bebebe"
android:text="Button2" />
<Button
android:id="#+id/button3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="2dp"
android:layout_weight="0.20"
android:background="#bebebe"
android:text="Button3" />
<Button
android:id="#+id/button4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="2dp"
android:layout_weight="0.30"
android:background="#bebebe"
android:text="Button4" />
</LinearLayout>

Paste it in your XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#2258A2"
android:gravity="center"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000"
android:orientation="vertical"
android:weightSum="1" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.40"
android:background="#bebebe"
android:text="Button1" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="1dp"
android:layout_weight="0.20"
android:orientation="horizontal"
android:weightSum="1" >
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginRight="1dp"
android:layout_weight="0.50"
android:background="#bebebe"
android:text="Button2" />
<Button
android:id="#+id/button3"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.50"
android:background="#bebebe"
android:text="Button3" />
</LinearLayout>
<Button
android:id="#+id/button4"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="1dp"
android:layout_weight="0.40"
android:background="#bebebe"
android:text="Button4" />
</LinearLayout>

Your code seems correct, but if you want to replicate the size of the buttons then you can't set the height as wrap_content. This will make it as tall as the text, change that to some given value:
android:layout_height="50dp"

Well, in RelativeLayout, as the name suggests, the elements are positioned relative to something else, like the parent view, or another widget in the layout. So you can align the widget in many many ways, like apending it to the right of a view, to the left, above, below, and so on.
Please refer to this link and this other link for more information.
So, if you want to make your buttons look exactly like your example image, try this:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<Button
android:id="#+id/button1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:text="Button 1" />
<Button
android:id="#+id/button2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/button1"
android:text="Button 2" />
<Button
android:id="#+id/button3"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/button2"
android:text="Button 3" />
<Button
android:id="#+id/button4"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/button3"
android:text="Button 4" />
You can simply make the button width to fill_parent instead of align left and right. And the height, you can define the measures you'd like to use.
Btw, I used alignParentLeft and alignParentStart because I don't know which API level you're using, so I've used both parameters, old and new. But the effect is the same, your buttons will always start to the left of the parent view.
EDIT: As the user hasternet suggested, you could also use LinearLayout and get similar results.
EDIT 2: And if you like to change the look of your buttons, try to change the style (Take a look here to know what I mean).

Since you need to set the height of the buttons differently and also it depends on different screen size, you cannot achieve this with Relative Layout.
So go for LinearLayout and weightsum attribute. This way screen big or small, you can achieve your expected UI. Mentioned code below modified.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:Orientation="vertical"
android:weightsum="8" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="Button"
android:layout_weight="1"
/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button1"
android:text="Button"
android:layout_weight="3"
/>
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button2"
android:text="Button"
android:layout_weight="3"/>
<Button
android:id="#+id/button4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/button3"
android:text="Button"
android:layout_weight="1"/>
</LinearLayout>

How to disable or block TextView to not narrowed other elements of the Layout

I have problem with my TextView, when something is written in it. It narrows the right layout.
like here:
1 Without something is written: http://i.stack.imgur.com/zItJw.jpg
2.Without something is written in: http://i.stack.imgur.com/b5Nb4.jpg
My Layout Code:
1st bar:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:background="#drawable/czas_punkty_bez_napisu"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:gravity="center"
android:orientation="horizontal" >
<TextView
android:id="#+id/dzialanie"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="25sp"
android:text="X razy Y" />
<TextView
android:id="#+id/equal"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="25sp"
android:text="=" />
<TextView
android:id="#+id/tylemabyc"
android:textSize="25sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center" />
</LinearLayout>
</LinearLayout>
2nd bar
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="5dp"
android:layout_marginTop="20dp"
android:layout_weight="1"
android:background="#drawable/czas_punkty_bez_napisu"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/czas"
android:textSize="25sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
/>
</LinearLayout>
3rd bar:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginBottom="5dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:layout_marginTop="20dp"
android:layout_weight="1"
android:background="#drawable/czas_punkty_bez_napisu"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:id="#+id/wynik"
android:textSize="25sp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
/>
</LinearLayout>
How to block 1st TextView to not narrows others ?

You can use layout_weight property to tell android how much space each textView takes on the screen. If you want all of them to have the same space you can add the layout_weight of 1 for all of them.
You will also need to readjust your layout_width too. You will have to trade off for the layout_heght. For example if i want 4 textviews in a horizontal line holding equal space "Horizontally" i would do something like this:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<TextView
android:id="#+id/textView1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="This is verrry long text" />
<TextView
android:id="#+id/textView2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="maybe not" />
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="let us see" />
<TextView
android:id="#+id/textView4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="ok" />

How do I properly size in relative layout so my content isn't stretching on larger devices?

I am new to Android programming, and I have tried to research this thoroughly, but still not quite understanding how to resolve this problem. I will include my XML code below. I have tried using set "dip" sizing in Relative Layout in Eclipse to get the appearance desired of my app. Simple layout - Title Header and 3 buttons down the middle. Obviously, the problem I'm running into is the awkward stretching of everything due to the set specific dimensions. Any suggestions on how to properly use "match_parent" and "wrap_content" here? I'm just not quite understanding how to apply them in this situation. Maybe I should have used a Linear Layout, but Relative Layout seemed to be the better choice in case I increased the button count from 3 to upwards of 9 in the future for performance. Any help is much appreciated!
Here is my XML code:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity"
android:background="#ffffff" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="60dip"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:background="#drawable/pets_titlecrop" />
<Button
android:id="#+id/button1"
android:layout_width="80dip"
android:layout_height="80dip"
android:layout_below="#+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="48dp"
android:background="#drawable/call_now" />"
<TextView
android:id="#+id/textView2"
android:layout_width="100dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_below="#+id/textView1"
android:background="#808080" />
<TextView
android:id="#+id/textView3"
android:layout_width="100dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/textView2"
android:background="#808080" />"
<Button
android:id="#+id/button3"
android:layout_width="80dip"
android:layout_height="80dip"
android:layout_alignLeft="#+id/button2"
android:layout_below="#+id/button2"
android:layout_marginTop="36dp"
android:background="#drawable/bpaw_printedit" />
<Button
android:id="#+id/button2"
android:layout_width="80dip"
android:layout_height="80dip"
android:layout_alignLeft="#+id/button1"
android:layout_below="#+id/button1"
android:layout_marginTop="36dp"
android:background="#drawable/blue_globemap" />
<TextView
android:id="#+id/textView5"
android:layout_width="100dip"
android:layout_height="30dip"
android:layout_alignParentBottom="true"
android:layout_toLeftOf="#+id/textView3"
android:layout_toRightOf="#+id/textView2"
android:background="#drawable/by_wvg" />
</RelativeLayout>

You should try nested Linear layout and thus using weights you may achieve a flexible user interface, try this
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffffff"
android:orientation="vertical"
tools:context=".MainActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="60dip" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="#+id/textView3"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#808080" />
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical" >
<Button
android:id="#+id/button1"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<Button
android:id="#+id/button2"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<Button
android:id="#+id/button3"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
<TextView
android:id="#+id/textView5"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<TextView
android:id="#+id/textView2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="#808080" />
</LinearLayout>

Complex layout with same layout_margin in Android

I have a problems with my layout_margin. I want to make my layout look like that:
(with "a" is margin)
My problems is, when i build my layout in other screen size, it look like that:
How can i make it beautiful with different screen size? This is my layout:
<LinearLayout
android:id="#+id/footer_result_layout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="#+id/btn_recommendtion"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:src="#drawable/coodinate" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_gravity="center"
android:layout_marginTop="20dip"
android:layout_weight="1"
android:gravity="center"
android:orientation="horizontal" >
<ImageView
android:id="#+id/btn_facebook"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_margin="5dip"
android:layout_weight="1"
android:adjustViewBounds="true"
android:src="#drawable/fb" />
<ImageView
android:id="#+id/btn_mixi"
android:layout_width="0dp"
android:layout_height="fill_parent"
android:layout_margin="5dip"
android:layout_weight="1"
android:adjustViewBounds="true"
android:src="#drawable/mixi" />
</LinearLayout>
</LinearLayout>

Try using a relative layout.
Here is an example using buttons. You can swap out the values of the buttons with your image views, and adjust your margins as needed. This should center the buttons, with the same margins on any screen.
<Button
android:id="#+id/btn_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:text="BUTTON 1"
android:layout_centerHorizontal="true"/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_below="#+id/btn_1"
android:layout_centerHorizontal="true"
android:layout_marginTop="5dip"
android:orientation="horizontal" >
<Button
android:id="#+id/btn_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:layout_margin="5dip"
android:text="BUTTON 2" />
<Button
android:id="#+id/btn_3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:adjustViewBounds="true"
android:layout_margin="5dip"
android:text="BUTTON 3" />
</LinearLayout>
It looks like this:

You'll need to use RelativeLayout for that.
Center button1 with android:layout_alignParentTop="true" and align it in the parent top with android:layout_centerHorizontal="true and work from there.

The code:-
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button 1"
android:layout_margin="10dip"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="true"/>
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button 2"
android:layout_margin="10dip"
android:layout_alignParentLeft="true"
android:layout_below="#+id/button1"/>
<Button
android:id="#+id/button3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button 3"
android:layout_margin="10dip"
android:layout_alignParentRight="true"
android:layout_below="#+id/button1"/>
</RelativeLayout>
Considering the a=10

Children in Linear Layout with equal padding

I am currently designing a ButtonBar with 5 buttons (they will all be ImageButtons, but for now, only 3 of them are). This is my first android project so I'm learning as I go along. I'm trying to weight each button equally, without scaling them (have equal padding rather than equal width). This is my code so far:
<LinearLayout
android:id="#+id/back"
android:orientation="horizontal"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_alignParentBottom="true"
android:background="#000000"
style="#android:style/ButtonBar"
android:weightSum="5"
>
<ImageButton
android:id="#+id/info_button"
android:padding="20dp"
android:background="#drawable/info"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1"
/>
<Button
android:id="#+id/wishlist_button"
android:text="#string/wish_label"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1"
android:padding="20dp"
android:textSize="15dip"
android:textColor="#b7b7b7"></Button>
<Button
android:id="#+id/buy_button"
android:text="#string/buy_label"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1"
android:padding="20dp"
android:textSize="15dip"
android:textColor="#b7b7b7"/>
<ImageButton
android:id="#+id/dislike_button"
android:padding="20dp"
android:background="#drawable/dislike_button"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1"
/>
<ImageButton
android:id="#+id/like_button"
android:padding="20dp"
android:background="#drawable/like_button"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_weight="1"
/>
This is what it looks like now:
stretched weighted: http://i.imgur.com/MAfjp.png
This is what I want it to look like (closely):
non-stretched equally padded: http://i.imgur.com/vXTEy.png
Thank you for helping. I've been searching for the answer for a while and have tried so much already.

Here it is:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/back"
android:orientation="horizontal"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_alignParentBottom="true"
android:background="#000000"
style="#android:style/ButtonBar"
android:gravity="center"
>
<ImageButton
android:id="#+id/info_button"
android:background="#null"
android:src="#drawable/info"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
/>
<Button
android:id="#+id/wishlist_button"
android:text="#string/wish_label"
android:background="#null"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:textSize="15dip"
android:textColor="#b7b7b7"></Button>
<Button
android:id="#+id/buy_button"
android:text="#string/buy_label"
android:background="#null"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
android:textSize="15dip"
android:textColor="#b7b7b7"/>
<ImageButton
android:id="#+id/dislike_button"
android:background="#null"
android:src="#drawable/dislike_button"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
/>
<ImageButton
android:id="#+id/like_button"
android:background="#null"
android:src="#drawable/like_button"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:layout_weight="1"
/>
</LinearLayout>
I don't know how style="#android:style/ButtonBar" is set, so if it doesn't show properly try remove it.

You could add a spacer element in between each of the images/buttons and assign the layout_weight to the spacer elements instead of the images/buttons. So it would look something like this:
<LinearLayout
android:id="#+id/back"
android:orientation="horizontal"
android:layout_height="50dip"
android:layout_width="fill_parent"
android:layout_alignParentBottom="true"
android:background="#000000"
style="#android:style/ButtonBar"
>
<ImageButton
android:id="#+id/info_button"
android:padding="20dp"
android:background="#drawable/info"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_weight="1" />
/>
<Button
android:id="#+id/wishlist_button"
android:text="#string/wish_label"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:padding="20dp"
android:textSize="15dip"
android:textColor="#b7b7b7"></Button>
<LinearLayout
android:layout_height="wrap_content"
android:layout_weight="1" />
<Button
android:id="#+id/buy_button"
android:text="#string/buy_label"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:padding="20dp"
android:textSize="15dip"
android:textColor="#b7b7b7"/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_weight="1" />
<ImageButton
android:id="#+id/dislike_button"
android:padding="20dp"
android:background="#drawable/dislike_button"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
<LinearLayout
android:layout_height="wrap_content"
android:layout_weight="1" />
<ImageButton
android:id="#+id/like_button"
android:padding="20dp"
android:background="#drawable/like_button"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
/>
</LinearLayout>
This may not be the most elegant solution since it adds several views to your layout, but it's worked for me in the past.

You should consider using only image button with equal size images with equal weight inside your LinearLayout.
Regards,
Stéphane