how to specify width and height of a drawable item

Question

Hi is there anyway of providing width and height of a drawable defined in drawable.xml in drawable folder.

Example:

 <selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item android:state_pressed="true"
           android:drawable="@drawable/button_pressed" /> <!-- pressed -->
     <item android:state_focused="true"
           android:drawable="@drawable/button_focused" /> <!-- focused -->
     <item android:drawable="@drawable/button_normal" /> <!-- default -->
 </selector>

I wanted to specify width and height maybe somehow using "scale" tag inside it which i tried but didnt worked. This is my code:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/icon_ratingstar">
        <scale android:scaleWidth="20" android:scaleHeight="20" android:drawable="@drawable/icon_ratingstar" />
    </item>
</selector>

The only attributes I can see that might work is to use something like this — user606669, Feb 14 '19 at 13:57

score 7 · Answer 1 · answered Mar 01 '17 at 13:30

7

layer-list will help: here change values according to your requirement

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape>
        <size
            android:width="20dp"
            android:height="20dp" />

        <solid android:color="@android:color/black" />
    </shape>
</item>
<item
    android:width="20dp"
    android:height="20dp"
    android:drawable="@drawable/slider_knob" />

answered Mar 01 '17 at 13:30

Parth

1,908
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You can't specify width and height inside item tag, I don't see that mentioned in documentation. – user606669 Feb 14 '19 at 13:59
@user606669 You can but it's only supported after API 23 – Farid Dec 17 '20 at 13:52
1

How can I use it before api 23? – Lidor Eliyahu Shelef Feb 15 '21 at 10:59

score 2 · Answer 2 · answered Jan 28 '17 at 15:13

You can use attribute width and height in API level 23 and higher:

<item
    android:width="18dp" android:height="18dp"
    android:drawable="@drawable/icon_ratingstar"/>

For lower API levels, I do not know a way of specifying width and height directly. The best practice is scaling drawables as far as I know.

score 1 · Answer 3 · answered Nov 08 '22 at 08:23

With selector and drawable you can do it like this for example:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true" >
        <layer-list>
            <item android:drawable="@drawable/your_first_drawable"  
               android:height="25dp" android:width="25dp"/>
        </layer-list>
    </item>
    <item android:state_checked="false" >
        <layer-list>
            <item android:drawable="@drawable/your_second_drawable"  
               android:height="25dp" android:width="25dp"/>
        </layer-list>
    </item>
</selector>

score -16 · Answer 4 · answered Sep 23 '11 at 14:53

-16

You can specify inside the <item> tag the width and height of the drawable:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
 <item android:state_pressed="true"
       android:width="100dp"
       android:height="20dp"
       android:drawable="@drawable/button_pressed" /> <!-- pressed -->
 <item android:state_focused="true"
       android:width="100dp"
       android:height="20dp"
       android:drawable="@drawable/button_focused" /> <!-- focused -->
 <item android:drawable="@drawable/button_normal" /> <!-- default -->

answered Sep 23 '11 at 14:53

Ovidiu Latcu

71,607
15
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13

The above does not actually work. `StateListDrawable` (selector) does not actually have a width and height property. – Sent1nel Aug 14 '12 at 10:53
@Sent1nel Definitely. One can use `width` and `height` with (XML) `ShapeDrawable` if that's what's behind the `item`s, though. – class stacker Mar 25 '13 at 13:09
Even when I have a shape as the root element of the drawable this doesn't seem to work. I don't suppose you have a working example? – Ben Clayton Oct 10 '13 at 11:20
1

Dude, this answer is not actually wrong. The property `android:width` and `android:height` are exists but only in API level 23 and higher. – Taufik Nur Rahmanda Oct 11 '18 at 06:42
1

It seems like you forgot to delete the answer :) – Kishan Solanki Jul 18 '19 at 10:14

how to specify width and height of a drawable item

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