How to draw a perfect circular button?

I want to draw a perfect circular button. I tried using the following code:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval" >
    <stroke 
        android:width="3dip"
        android:color="#065a32" />
    <corners android:radius="10dip"/>
      <solid android:color="#eaebec" />
</shape>

But i was only able to draw an oval shape, even if i change the parameter:

<stroke 
android:width="3dip"/>
<corners android:radius="10dip"/>

My Screenshot:

I already tried different links of this site but none of them fulfill my need.

Edit:

My code for getView() is:

public View getView(int position, View convertView, ViewGroup parent) {
        View v = convertView;
        if (convertView == null) { 
            LayoutInflater vi = (LayoutInflater) mContext
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            v = vi.inflate(R.layout.calendar_item, null);

        }
view.setBackgroundResource(R.drawable.calendar_cell_clicked);
}