CODEWITHSUNDEEP
androidandroid-animationandroid-xml
Simon Bengtsson
Simon Bengtsson

Reputation: 8151

Animation defined in XML doesn't start

I found the pngs for the standard progress spinner in Android. However, when I try to animate them in a similar way to how android does it with the following code nothing happens. They just appear to be a static icons.

The button

<Button
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:background="@anim/anim"
    android:drawableRight="@anim/anim" >
</Button>

The animation

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <rotate
             android:drawable="@drawable/spinner_76_outer_holo" 
             android:pivotX="50%"
             android:pivotY="50%"
             android:fromDegrees="0"
             android:toDegrees="1080" />
    </item>
    <item>
        <rotate
             android:drawable="@drawable/spinner_76_inner_holo"
             android:pivotX="50%"
             android:pivotY="50%"
             android:fromDegrees="720"
             android:toDegrees="0" />
    </item>
</layer-list>

Is it even possible to start animations automatically that is defined in XML only or do they have to be started with java?

Upvotes: 0

Views: 202

Answers (1)

Kevin Coppock
Kevin Coppock

Reputation: 134664

You can use animated-rotate but that will only work on API 11+. If you use rotate, then you'll have to start them in Java, and animate them by animating the level (drawable.setLevel()) between 0 and 10000 (sounds weird? It is, but it's how it's done).

Upvotes: 1

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