自定义的ViewGroup中添加自定义View 造成的无法显示问题(个人)

/**
 * 简单自定义三头像
 * @author M.Z
 */
public class MyGroupHeaderImg extends RelativeLayout {

    
    public MyGroupHeaderImg(Context context, AttributeSet attrs) {
        super(context, attrs);
        this.mContext = context;
        mView = inflate(context, R.layout.view_group_head_img,this);
        initView();
    }
    
    public MyGroupHeaderImg(Context context, AttributeSet attrs, int defStyle) {
        this(context, attrs);
    }

    private Context mContext;
    
    private CircleProgressBar firstImg,scendImg,threeImg;
    
    private View mView;
    /**
     *  初始化
     */
    private void initView() {
        firstImg = (CircleProgressBar) mView.findViewById(R.id.first_ivAvator);
        scendImg = (CircleProgressBar) mView.findViewById(R.id.scend_ivAvator);
        threeImg = (CircleProgressBar) mView.findViewById(R.id.three_ivAvator);
    }
    
    /**
     * 设置Url
     * @param avatorUrls
     */
    public void setAvatorArray(String[] avatorUrls){
        
        VocImageLoader.getInstance().displayImage(avatorUrls[0],
                firstImg, MyDisplayImageOptions.getAvatorImageOption(),
                null, null);
        
        VocImageLoader.getInstance().displayImage(avatorUrls[1],
                scendImg, MyDisplayImageOptions.getAvatorImageOption(),
                null, null);
        
        VocImageLoader.getInstance().displayImage(avatorUrls[2],
                threeImg, MyDisplayImageOptions.getAvatorImageOption(),
                null, null);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:circleBar="http://schemas.android.com/apk/res/com.iflytek.vocation_edu_cloud"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" 
    android:background="@android:color/transparent">

    <com.iflytek.voc_edu_cloud.view.CircleProgressBar
        android:id="@+id/scend_ivAvator"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_alignRight="@+id/first_ivAvator"
        android:layout_alignTop="@+id/first_ivAvator"
        android:layout_marginRight="19dp"
        android:layout_marginTop="32dp"
        android:contentDescription="@string/app_name"
        circleBar:border_color="@color/white"
        circleBar:border_progress="100"
        circleBar:border_width="1dp"
        circleBar:inner_border_color="#ffffff"
        circleBar:one_src="@drawable/defult_avatar" />

    <com.iflytek.voc_edu_cloud.view.CircleProgressBar
        android:id="@+id/three_ivAvator"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_alignLeft="@+id/first_ivAvator"
        android:layout_alignTop="@+id/scend_ivAvator"
        android:layout_marginLeft="21dp"
        android:contentDescription="@string/app_name"
        circleBar:border_color="@color/white"
        circleBar:border_progress="100"
        circleBar:border_width="1dp"
        circleBar:inner_border_color="#ffffff"
        circleBar:one_src="@drawable/defult_avatar" />

    <com.iflytek.voc_edu_cloud.view.CircleProgressBar
        android:id="@+id/first_ivAvator"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_centerHorizontal="true"
        android:contentDescription="@string/app_name"
        circleBar:border_color="@color/white"
        circleBar:border_progress="100"
        circleBar:border_width="1dp"
        circleBar:inner_border_color="#ffffff"
        circleBar:one_src="@drawable/defult_avatar" />

</RelativeLayout>

<com.iflytek.voc_edu_cloud.view.MyGroupHeaderImg
       android:id="@+id/member_item_ivAvator"
       android:layout_width="80dp"
       android:layout_height="80dp"
       android:layout_alignParentLeft="true"
       android:contentDescription="@string/app_name"
   />

<com.iflytek.voc_edu_cloud.view.MyGroupHeaderImg
         xmlns:circleBar="http://schemas.android.com/apk/res/com.iflytek.vocation_edu_cloud"
         android:id="@+id/member_item_ivAvator"
         android:layout_width="80dp"
         android:layout_height="80dp"
         android:layout_alignParentLeft="true"
         android:contentDescription="@string/app_name"
         />