XML : Using XML and Java view together in android

I am trying to use both xml view and coded view at the same time in the Android. In this example I am trying to make a button in xml while using coded views to create more dynamic parts in this example moving ball. Ball is moved by tilting the phone. I can either see button which is in xml or the ball which is in java.

I want to know how to put together those two views together so I can move a ball and at the same time see the button or anything else in xml.

Here is my setup Java:

  public class MainActivity extends Activity implements SensorEventListener {  private SensorManager sensorManager;  private Sensor accelerometer;  private long lastUpdate;    AnimatedView animatedView = null;  ShapeDrawable mDrawable = new ShapeDrawable();  public static int x;  public static int y;          @Override  protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);      setContentView(R.layout.activity_main);        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);      accelerometer = sensorManager              .getDefaultSensor(Sensor.TYPE_ACCELEROMETER);      lastUpdate = System.currentTimeMillis();        animatedView = new AnimatedView(this);      setContentView(animatedView);      Display mdisp= getWindowManager().getDefaultDisplay();      Point mdispSize = new Point();      mdisp.getSize(mdispSize);      int maxX = mdispSize.x;      int maxY = mdispSize.y;      x = maxX/2;      y = maxY/2;  }    @Override  protected void onResume() {      super.onResume();      sensorManager.registerListener(this, accelerometer,              SensorManager.SENSOR_DELAY_GAME);  }    @Override  protected void onPause() {      super.onPause();      sensorManager.unregisterListener(this);  }    @Override  public boolean onCreateOptionsMenu(Menu menu) {      // Inflate the menu; this adds items to the action bar if it is present.      getMenuInflater().inflate(R.layout.activity_main, menu);      return true;  }    @Override  public void onAccuracyChanged(Sensor arg0, int arg1) {      // TODO Auto-generated method stub    }    @Override  public void onSensorChanged(SensorEvent event) {      // TODO Auto-generated method stub      Display mdisp= getWindowManager().getDefaultDisplay();      Point mdispSize = new Point();      mdisp.getSize(mdispSize);      int maxX = mdispSize.x;      int maxY = mdispSize.y;        if (event.sensor.getType() == Sensor.TYPE_ACCELEROMETER) {          if(x>maxX){          x=maxX-25;          }          else if(y>maxY){          y=maxY-25;          }          else{          x -= (int) event.values[0];          y += (int) event.values[1];          }        }    }  public class AnimatedView extends ImageView {        static final int width = 25;      static final int height = 25;          public AnimatedView(Context context) {         super(context);          // TODO Auto-generated constructor stub            mDrawable = new ShapeDrawable(new OvalShape());          mDrawable.getPaint().setColor(Color.BLUE);//0xffffAC23          mDrawable.setBounds(x, y, x + width, y + height);        }        public AnimatedView(Context context, AttributeSet attrs) {          super(context, attrs);          // TODO Auto-generated constructor stub            mDrawable = new ShapeDrawable(new OvalShape());          mDrawable.getPaint().setColor(Color.BLUE);//0xffffAC23          mDrawable.setBounds(x, y, x + width, y + height);        }        public AnimatedView(Context context, AttributeSet attrs, int defStyle) {          super(context, attrs, defStyle);          // TODO Auto-generated constructor stub            mDrawable = new ShapeDrawable(new OvalShape());          mDrawable.getPaint().setColor(Color.BLUE);//0xffffAC23          mDrawable.setBounds(x, y, x + width, y + height);        }          @Override      protected void onDraw(Canvas canvas) {          mDrawable.setBounds(x, y, x + width, y + height);          mDrawable.draw(canvas);          invalidate();      }  }    public void onClick(View v){      Button button = (Button) v;       ((Button) v).setText("kliknut");    }    

xml: (activity_main)

  <?xml version="1.0" encoding="utf-8"?>  <android.support.design.widget.CoordinatorLayout        xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:fitsSystemWindows="true"  tools:context="bepo.proba.MainActivity"  >    <android.support.design.widget.AppBarLayout      android:layout_width="match_parent"      android:layout_height="wrap_content"      android:theme="@style/AppTheme.AppBarOverlay"      >        <android.support.v7.widget.Toolbar          android:id="@+id/toolbar"          android:layout_width="match_parent"          android:layout_height="?attr/actionBarSize"          android:background="?attr/colorPrimary"          app:popupTheme="@style/AppTheme.PopupOverlay"          />    </android.support.design.widget.AppBarLayout>    <include layout="@layout/content_main" />        </android.support.design.widget.CoordinatorLayout>    

xml (content_main)

  <?xml version="1.0" encoding="utf-8"?>  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:app="http://schemas.android.com/apk/res-auto"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent"  android:paddingBottom="16dp"  android:paddingLeft="16dp"  android:paddingRight="16dp"  android:paddingTop="16dp"  app:layout_behavior="@string/appbar_scrolling_view_behavior"  tools:context="bepo.proba.MainActivity"  tools:showIn="@layout/activity_main">    <TextView      android:layout_width="wrap_content"      android:layout_height="wrap_content"      />       <bepo.proba.MainActivity.AnimatedView      android:id="@+id/AnimatedView"      android:layout_width="wrap_content"      android:layout_height="wrap_content"/>    <Button      android:layout_width="wrap_content"      android:layout_height="wrap_content"      android:text="New Button"      android:layout_centerVertical="true"      android:layout_centerHorizontal="true"      android:clickable="true"      android:onClick="onClick" />  </RelativeLayout>