Custom view not displaying in activity
===

I have a custom control which is supposed to work like the Segmenttab controller in iOS.
    
It has 3 textviews and the layout is as follows:
    
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/groupofthree"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@color/background"
        android:orientation="horizontal" >
    
        <TextView
            android:id="@+id/tv_1"
            android:layout_width="0dp"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:background="@color/black"
            android:gravity="center"
            android:text="Retiree"
            android:textColor="@color/whitetext"
            android:textSize="15dp"
            android:textStyle="normal" />
    
        <TextView
            android:id="@+id/tv_2"
            android:layout_width="0dp"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:background="@color/lightGrey"
            android:gravity="center"
            android:padding="3dp"
            android:text="Under18/fulltime"
            android:textColor="@color/whitetext"
            android:textSize="15dp"
            android:textStyle="normal" />
    
        <TextView
            android:id="@+id/tv_3"
            android:layout_width="0dp"
            android:layout_height="fill_parent"
            android:layout_weight="1"
            android:background="@color/black"
            android:gravity="center"
            android:text="Others"
            android:textColor="@color/whitetext"
            android:textSize="15dp"
            android:textStyle="normal" />
    	
    </LinearLayout>
    
The control looks like this:
    
    
    
        public class SegmentedRadioGroup extends View{
        
        	private Context m_Context;
        
        	public TextView tv1;
        	public TextView tv2;
        	public TextView tv3;
        	int selectedIndex = 0;
        
        	public SegmentedRadioGroup(Context context, AttributeSet attrs) {
        
        		super(context, attrs);
        		m_Context = context;
        
        	}
        
        	public SegmentedRadioGroup(Context context, AttributeSet attrs, int defStyle) {
        
        		super(context, attrs, defStyle);
        	}
        
        	public SegmentedRadioGroup(Context context) {
        		super(context);
        		// TODO Auto-generated constructor stub
        
        		m_Context = context;
        		LayoutInflater inflater = (LayoutInflater) m_Context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        		View v = inflater.inflate(R.layout.threeradiobutton, null);
        		
        		
        		v.isInEditMode();
        		tv1 = (TextView) v.findViewById(R.id.tv_1);
        		tv2 = (TextView) v.findViewById(R.id.tv_2);
        		tv3 = (TextView) v.findViewById(R.id.tv_3);
        
        		tv1.setOnClickListener(new OnClickListener() {
        
        			@Override
        			public void onClick(View v) {
        				// TODO Auto-generated method stub
        
        				selectedIndex = 0;
        				tv1.setBackgroundColor(R.color.darkgrey);
        				tv2.setBackgroundColor(R.color.lightGrey);
        				tv3.setBackgroundColor(R.color.lightGrey);
        			}
        		});
        
        		tv2.setOnClickListener(new OnClickListener() {
        
        			@Override
        			public void onClick(View v) {
        				// TODO Auto-generated method stub
        				selectedIndex = 1;
        				tv1.setBackgroundColor(R.color.lightGrey);
        				tv2.setBackgroundColor(R.color.darkgrey);
        				tv3.setBackgroundColor(R.color.lightGrey);
        
        			}
        		});
        
        		tv3.setOnClickListener(new OnClickListener() {
        
        			@Override
        			public void onClick(View v) {
        				// TODO Auto-generated method stub
        				selectedIndex = 2;
        
        				tv1.setBackgroundColor(R.color.lightGrey);
        				tv2.setBackgroundColor(R.color.lightGrey);
        				tv3.setBackgroundColor(R.color.darkgrey);
        			}
        		});
        	}
        	
        	@Override
        	protected void onDraw(Canvas canvas) {
        		// TODO Auto-generated method stub
        		super.onDraw(canvas);
        		
        		
        	}
        
        
        }
        
        
The activity in which i add this custom view to the layout is as follows:
        
        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="@color/background"
            android:orientation="vertical" >
        
            <RelativeLayout
                android:id="@+id/widget1216"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:background="@drawable/appspecific_menubar" >
        
                <TextView
                    android:id="@+id/widget1222"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_centerHorizontal="true"
                    android:layout_centerVertical="true"
                    android:text="@string/transaction_accounts_topbar"
                    android:textColor="@color/whitetext"
                    android:textSize="18sp"
                    android:textStyle="bold" >
                </TextView>
        
                <ImageButton
                    android:id="@+id/home_button"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignParentLeft="true"
                    android:layout_alignParentTop="true"
                    android:background="@null"
                    android:paddingBottom="5dip"
                    android:paddingLeft="10dip"
                    android:paddingTop="5dip"
                    android:src="@drawable/home" >
                </ImageButton>
            </RelativeLayout>
        <LinearLayout 
            android:id="@+id/testLayout"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" />.
         </LinearLayout>
        
    
        
And the activity looks like this. I have added the view into the layout using addview.
        
        
        public class TransactionAccount extends Activity {
        	LinearLayout selector;
        	SegmentedRadioGroup sg_test;
        	LayoutInflater inflater;
        	@Override
        	protected void onCreate(Bundle savedInstanceState) {
        		// TODO Auto-generated method stub
        		super.onCreate(savedInstanceState);
        		setContentView(R.layout.transactionaccount_main);
        		selector = (LinearLayout)findViewById(R.id.testLayout);
        		
        		
        		
        		
        		sg_test = new SegmentedRadioGroup(this);
        		selector.addView(sg_test);
        		
        		
        		
        //		inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        //		selector = inflater.inflate(R.id., null);
        		
        //		sg_test = new SegmentedRadioGroup(this);
        		
        //		sg_test.tv1.setText("1");
        //		sg_test.tv2.setText("2");
        //		sg_test.tv3.setText("3");
        //		sg_test.tv1.setBackgroundColor(R.color.blacktext);
        //		sg_test.setVisibility(View.VISIBLE);
        //		
        //		Log.d("TransactionAccount", "onCreate++++++" + sg_test.tv1.getText());
        //		Log.d("TransactionAccount", "onCreate++++++" + sg_test.tv2.getText());
        //		Log.d("TransactionAccount", "onCreate++++++" + sg_test.tv3.getText());
        	}
        }
       
    
        
        
But what i see on the screen is a blank screen.. and not the custom control which should show up. Kindly tell me where am i going wrong. 
        
Thanks in advance.

