Android Pop-Up Animation

MainActivity.java

public class MainActivity extends AppCompatActivity {
    boolean isPopped=false;
    double h;
    double w;

    LinearLayout popUpFrame;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final TextView popUpText=(TextView)findViewById(R.id.textView4);
        popUpFrame=(LinearLayout) findViewById(R.id.popUpContainer);




       popUpFrame.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                final LinearLayout fm = (LinearLayout) v;
                Animation expandIn = AnimationUtils.loadAnimation(MainActivity.this, R.anim.pop_up);


                if(isPopped)
                {
                    LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) fm.getLayoutParams();
                    params.height = (int) h;
                    params.width = (int) w;

                    fm.setLayoutParams(params);
                    isPopped=false;

                }
                else {

                    popUpFrame.startAnimation(expandIn);
                    isPopped=true;

                }
                expandIn.setAnimationListener(new Animation.AnimationListener() {
                    @Override
                    public void onAnimationStart(Animation animation) {
                        LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) fm.getLayoutParams();
                        double height= h*1.8;
                        double width=w*1.8;
                        params.height = (int)(height);
                        params.width = (int) (width);

                        fm.setLayoutParams(params);
                    }

                    @Override
                    public void onAnimationEnd(Animation animation) {


                    }

                    @Override
                    public void onAnimationRepeat(Animation animation) {

                    }
                });


             ;

            }
        });

    }

    @Override
    protected void onResume() {
        super.onResume();
       h=popUpFrame.getLayoutParams().height;
        w=popUpFrame.getLayoutParams().width;
    }
}

pop_up.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="1.25"
    android:toYScale="1.2"

    android:pivotX="50%"
    android:pivotY="50%"
    android:duration="400"/>


    <scale
        android:fromXScale="1.25"
    android:fromYScale="1.2"
    android:toXScale="1.0"
    android:toYScale="1.0"
    android:pivotX="50%"
    android:pivotY="50%"
    android:startOffset="1"
    android:duration="300"/>
</set>