animation of TextView's text size
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
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
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);