Setting alpha of drawable through xml

Question

Can we set the alpha of drawable for its disable state through XML? For example by using android:state_disable.

question is not clear. please mention your correct requirement, then we may help you. We can disable a view (button, image button, etc.), it contains drawables. why to set alpha to drawable to disable it ? — Yugandhar Babu, Dec 22 '11 at 07:40

score 3 · Answer 1 · answered Apr 22 '16 at 13:04

This is my solution, hope someone finds this useful. Yes, this is and old post, but posts like this need a answer that works today since they show up when you search.

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_enabled="false">
        <bitmap android:alpha="@integer/disabled_alpha" android:src="@drawable/item"/>
    <item/>
    <item android:state_enabled="true" android:drawable="@drawable/item" />
</selector>

score 1 · Accepted Answer · answered Dec 22 '11 at 07:34

1

actually we cant set alpha for drawable instead you should use this setAlpha(int alpha) Specify an alpha value for the drawable.

answered Dec 22 '11 at 07:34

Crazy Coder

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score -1 · Answer 3 · answered Nov 06 '12 at 07:53

-1

Drawable card_water_wave = getResources().getDrawable(R.drawable.textview_back);
card_water_wave.setAlpha(150);

answered Nov 06 '12 at 07:53

Anuj Sharma

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score -1 · Answer 4 · edited May 23 '17 at 11:54

-1

See my answer to a similar question: https://stackoverflow.com/a/29078730/562365

Basically you can use the alpha of a BitmapDrawable and then use that drawable in your selector.

edited May 23 '17 at 11:54

Community

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answered Mar 16 '15 at 14:05

Kasium

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Setting alpha of drawable through xml

4 Answers4