animation of TextView's text size

Question

I want to be able to do a text animation and change the size of the text in a TextView. I read that there are property animations in android but if someone knows a simple code that can do this for me or an example somewhere I will deeply appreciate it. Thank u in advance!

Related [Animation of android TextView's text size and not the entire TextView](//stackoverflow.com/a/30324368) — Tushar, Jan 25 '17 at 04:51

score 21 · Accepted Answer · edited Jan 07 '14 at 18:37

21

scale.xml

<?xml version="1.0" encoding="utf-8"?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android">
    <scale
          android:fromXScale="1.0"
          android:fromYScale="1.0"
          android:toXScale="2.0"
          android:toYScale="2.0"
          android:duration="3000"></scale>
</set>

A function into an Activity:

private void RunAnimation() 
{
    Animation a = AnimationUtils.loadAnimation(this, R.anim.scale);
    a.reset();
    TextView tv = (TextView) findViewById(R.id.firstTextView);
    tv.clearAnimation();
    tv.startAnimation(a);
}

extracted and modified from here

edited Jan 07 '14 at 18:37

BenMorel

34,448
50
182
322

answered Oct 06 '11 at 16:22

A.Quiroga

5,704
6
37
58

1

Thank u this helped me a lot. But I was also wandering could it be done with a property animation on the text, and not the whole text view? – Sandra Oct 07 '11 at 08:29
2

`scale.xml` goes under **/res/anim/** – Gene Bo Jan 22 '18 at 04:49

Nidhin · Answer 2 · 2017-02-03T06:57:31.723

Use ValueAnimator class in the android

final float startSize = o; // Size in pixels
    final float endSize = 30;
    final int animationDuration = 1000; // Animation duration in ms

    ValueAnimator animator = ValueAnimator.ofFloat(startSize, endSize);
    animator.setDuration(animationDuration);

    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
        @Override
        public void onAnimationUpdate(ValueAnimator valueAnimator) {
            float animatedValue = (float) valueAnimator.getAnimatedValue();
            tv.setTextSize(animatedValue);
        }
    });

    animator.start();

refer this link ValueAnimator

Another solution is that apply scale animation on Textview or its parent layout

ScaleAnimation scaleAnimation = new ScaleAnimation(0.7f, 1.1f, 0.7f, 1.1f, ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
                   ScaleAnimation.RELATIVE_TO_SELF, 0.5f);
scaleAnimation.setDuration(600);
viewZoom.startAnimation(scaleAnimation);

Copied code from [this answer](http://stackoverflow.com/a/30324368/2025923) — Tushar, Jan 25 '17 at 04:50

score 6 · Answer 3 · edited Sep 01 '15 at 06:54

Animation animation=new TranslateAnimation(0,480,0,0); 
animation.setDuration(5000);
animation.setRepeatMode(Animation.RESTART);
animation.setRepeatCount(Animation.INFINITE);
text.startAnimation(animation);
// applying animation to textview object..

If you are using button event to show animation then put the code inside onClick() otherwise use override method onWindowFocusChanged(boolean hasFocus) to start animation

animation of TextView's text size

3 Answers3

Linked