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Android: Is it possible to scale a xml drawable?


Here is what I want to do: I have this scale xml:




<?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android"
android:drawable="@drawable/mydrawable" android:scaleGravity="bottom"
android:scaleHeight="50%" />



And I want to use it with this drawable xml:




<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient android:startColor="#FFFFFFFF"
android:endColor="#FFFF0000"
android:angle="90" />
</shape>
</item>
</layer-list>



Then I set the scale xml as a background for a LinearLayout, but I don't see anything. Am I missing something or is it not possible to do this (with XML)?


Source: Tips4allCCNA FINAL EXAM

Comments

  1. This is an issue with the ScaleDrawable object which cannot be resolved in XML.

    But it is easy, just do the following:

    // Get the scale drawable from your resources
    ScaleDrawable scaleDraw = (ScaleDrawable)getResources().getDrawable(R.drawable.background_scale);
    // set the Level to 1 (or anything higher than 0)
    scaleDraw.setLevel(1);

    // Now assign the drawable where you need it
    layout.setBackgroundDrawable(scaleDraw);


    I tested your code using this solution and it worked fine.

    ReplyDelete

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