Animatedly reduce button size on press and regain it's size on release

Here is what you want :-

imgSpin.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    ObjectAnimator scaleDownX = ObjectAnimator.ofFloat(imgSpin,
                            "scaleX", 0.8f);
                    ObjectAnimator scaleDownY = ObjectAnimator.ofFloat(imgSpin,
                            "scaleY", 0.8f);
                    scaleDownX.setDuration(1000);
                    scaleDownY.setDuration(1000);

                    AnimatorSet scaleDown = new AnimatorSet();
                    scaleDown.play(scaleDownX).with(scaleDownY);

                    scaleDown.start();

                    spinslot();
                    break;

                case MotionEvent.ACTION_UP:
                    ObjectAnimator scaleDownX2 = ObjectAnimator.ofFloat(
                            imgSpin, "scaleX", 1f);
                    ObjectAnimator scaleDownY2 = ObjectAnimator.ofFloat(
                            imgSpin, "scaleY", 1f);
                    scaleDownX2.setDuration(1000);
                    scaleDownY2.setDuration(1000);

                    AnimatorSet scaleDown2 = new AnimatorSet();
                    scaleDown2.play(scaleDownX2).with(scaleDownY2);

                    scaleDown2.start();

                    imgSpin.setEnabled(false);
                    break;
                }
                return true;
            }
        });

And just make this few changes in your xml :-

<ImageView
                    android:id="@+id/iv_spins"
                    android:layout_width="0dp"
                    android:layout_height="wrap_content"
                    android:layout_weight="1.9"
                    android:adjustViewBounds="true"
                    android:background="@drawable/spin"
                    android:scaleX="1"
                    android:scaleY="1" />

make use of scaleDown.play(scaleDownX).with(scaleDownY),it will keep the animated position and will not restore it back to original

Hope it solves your problem cheers

Android Best Practice (for your requirement):

1- Create two XMLs in /res/animator

i. reduce_size.xml

<?xml version="1.0" encoding="utf-8"?>
<set android:ordering="sequentially"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <set>
        <objectAnimator
            android:propertyName="scaleX"
            android:duration="300"
            android:valueTo="0.9f"
            android:valueType="floatType"/>
        <objectAnimator
            android:propertyName="scaleY"
            android:duration="300"
            android:valueTo="0.9f"
            android:valueType="floatType"/>
    </set>
</set>

ii. regain_size.xml

<?xml version="1.0" encoding="utf-8"?>
<set android:ordering="sequentially"
    xmlns:android="http://schemas.android.com/apk/res/android">
    <set>
        <objectAnimator
            android:propertyName="scaleX"
            android:duration="1000"
            android:valueTo="1f"
            android:startOffset="300"
            android:valueType="floatType"/>
        <objectAnimator
            android:propertyName="scaleY"
            android:duration="1000"
            android:valueTo="1f"
            android:startOffset="300"
            android:valueType="floatType"/>
    </set>
</set>

2- Usage

i. When MotionEvent.ACTION_DOWN

AnimatorSet reducer = (AnimatorSet) AnimatorInflater.loadAnimator(mContext,R.animator.squeeze_in);
reducer.setTarget(view);
reducer.start();

ii. When MotionEvent.ACTION_UP

AnimatorSet regainer = (AnimatorSet) AnimatorInflater.loadAnimator(mContext,R.animator.squeeze_out);
regainer.setTarget(view);
regainer.start();

This solution is tested thoroughly and guaranteed to achieve your requirement.

You can do this programmatically as follows on the touchlistener

new View.OnTouchListener() {
  public boolean onTouch(View v, MotionEvent event) {
    if(event.getAction == MotionEvent.ACTION_DOWN) {
      // scale your value
      float reducedvalue = (float)0.7;
      v.setScaleX(reducedvalue);
      v.setScaleY(reducedvalue);
    }
    else if (event.getAction == MotionEvent.ACTION_UP) {
      v.setScaleX(1);
      v.setScaleY(1);
    }
  } 
}