Edittext change width with animation

Question

I want to make an edittext which aligns in its parent's left and when users click it, edittext's width'll increase to right side. Here is the code that i used. But when animation ended, edittext width come to first size.
Can any one help me.?
And is there any solution to set "fillparent" to width's final size in animation?

Animation scaleAnimation = new ScaleAnimation(0, -500, 1, 1);
scaleAnimation.setDuration(750);
editText.startAnimation(scaleAnimation);

I added scaleAnimation.setFillAfter(true); before animation starts but i get this;

After 750ms, edittext is going to its first width.

Answer 1

This will definitely work for you.

Dynamic way of doing this:

ScaleAnimation animate = new ScaleAnimation(1, 2, 1, 1, Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0);
animate.setDuration(700);
animate.setFillAfter(true);
target.startAnimation(animate);

Way of Using XML

scale.xml (Put this in res/anim folder)

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true">

    <scale
        android:duration="400"
        android:fillAfter="true"        
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:pivotX="0%"
        android:pivotY="0%"
        android:toXScale="2.0"
        android:toYScale="1.0" >
    </scale>

</set>

Java Code:

Animation anim = AnimationUtils.loadAnimation(Anims.this, R.anim.scale);
mEdittext.startAnimation(anim);