Android ,overlapping imageview android

I tried to display a small imageview above the big imageview .It worked fine. But when I made the small imageview to appear in rounded shape, It is not showing up.. Your reply will be helpful

there is no error or warning or any crashing of avd .simply the small imageview is not showing

.xml file:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >



    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:adjustViewBounds="true"
        android:maxHeight="1000dp"
        android:maxWidth="1000dp"
        android:scaleType="fitXY"
        android:src="@drawable/ciaz"
        tools:ignore="ContentDescription" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageView1"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="14dp"
        android:adjustViewBounds="true"
        android:maxHeight="300dp"
        android:maxWidth="300dp"
        android:scaleType="fitXY"
        android:src="@drawable/ac"
        android:visibility="visible"
        tools:ignore="ContentDescription,RtlHardcoded" />
</RelativeLayout>

mainactivity.java

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

        im1 = (ImageView) findViewById(R.id.imageView1);
        im2 = (ImageView) findViewById(R.id.imageView2);



        im1.setOnTouchListener(new OnTouchListener() {

            @Override
            public boolean onTouch(View arg0, MotionEvent arg1) {
            try
            {
                int action=arg1.getAction();
                float x=(float)arg1.getX();
                float y=(float)arg1.getY();


                if(action==MotionEvent.ACTION_DOWN)
                {
                    context = getApplicationContext();
                    duration = Toast.LENGTH_SHORT;
                    String g= x+"  "+y;


                    Toast toast = Toast.makeText(context, g, duration);
                    toast.show();

                    if((x>0.0) && (x<100)&&(y>0.0) && (y<100))
                    {
                        im2.setVisibility(View.VISIBLE);
                        Bitmap bm = BitmapFactory.decodeResource(getResources(),R.drawable.ac);
                        roundedImage = new RoundedImageView(bm);
                        im2.setImageDrawable(roundedImage);
                  }


                }

                }

            catch(Exception e)
            {
                Toast toast = Toast.makeText(context, "exception", duration);
                toast.show();
            }
            return false;
            }
        });


    }

enter code here

Copyright Notice：Content Author:「exploreR」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/28923270/android-overlapping-imageview-android