Trying to implement a Discrete Slider using material design specifications.

MainActivty.java

public class MainActivity extends Activity {

    private RelativeLayout mTagContainer;
    private RelativeLayout mDiscreteTag;
    private ImageView mImageTag;
    private TextView mLabelTag;
    private SeekBar mSeekbar;
    private Context mContext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mTagContainer = (RelativeLayout) findViewById(R.id.discrete_container);
        mDiscreteTag = (RelativeLayout) findViewById(R.id.discrete_tag);
        mImageTag = (ImageView) findViewById(R.id.image_tag);
        mLabelTag = (TextView) findViewById(R.id.text_tag);
        mSeekbar = (SeekBar) findViewById(R.id.seek_bar);
        mContext = MainActivity.this;

        mSeekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                int val = (progress * (seekBar.getWidth() - 2 * seekBar.getThumbOffset())) / seekBar.getMax();
                mLabelTag.setText(String.valueOf(progress));
                // Move mDiscreteTag according to the thumb of the seekBar
                mDiscreteTag.setX(seekBar.getX() + val + seekBar.getThumbOffset() / 2 - 25);

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

                int progress = seekBar.getProgress();
                int val = (progress * (seekBar.getWidth() - 2 * seekBar.getThumbOffset())) / seekBar.getMax();
                mLabelTag.setText(String.valueOf(progress));
                mDiscreteTag.setX(seekBar.getX() + val + seekBar.getThumbOffset() / 2 - 25);

                //Animation scaleOut = AnimationUtils.loadAnimation(mContext, R.anim.scale_out);
                ScaleAnimation scaleAnimation = new ScaleAnimation(0, 1f, 0, 1f, Animation.RELATIVE_TO_SELF, (float)0.5, Animation.RELATIVE_TO_SELF, (float)0.5);
                scaleAnimation.setDuration(300);
                
                // Time for mDiscreteTag to appear
                mDiscreteTag.startAnimation(scaleAnimation);
                mDiscreteTag.setVisibility(View.VISIBLE);

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

                int progress = seekBar.getProgress();
                int val = (progress * (seekBar.getWidth() - 2 * seekBar.getThumbOffset())) / seekBar.getMax();
                mLabelTag.setText(String.valueOf(progress));
                mDiscreteTag.setX(seekBar.getX() + val + seekBar.getThumbOffset() / 2 - 25);

                Animation scaleIn = AnimationUtils.loadAnimation(mContext, R.anim.scale_in);
                ScaleAnimation scaleAnimation = new ScaleAnimation(1f, 0, 1f, 0, Animation.RELATIVE_TO_SELF, (float)0.5, Animation.RELATIVE_TO_SELF, (float)0.5);
                scaleAnimation.setDuration(800);
                
                // Time for mDiscreteTag to vanish
                scaleAnimation.setAnimationListener(scaleInListener);
                mDiscreteTag.startAnimation(scaleAnimation);
            }
        });
    }// End onCreate

    Animation.AnimationListener scaleInListener = new Animation.AnimationListener() {
        @Override
        public void onAnimationStart(Animation animation) {

        }

        @Override
        public void onAnimationEnd(Animation animation) {
            mDiscreteTag.setVisibility(View.INVISIBLE);
        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }
    };// End ScaleInAnimListener

}