android hybrid layout problem

See more:

XML

Java

Mobile

Android

Eclipse

Hi

i want to implement my app layout by java and xml together .


but when i run my project the first part that i wrote in xml will disappear.
why?


xml part

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MylayoutActivity" > 
       
   
   
<LinearLayout
    android:id="@+id/welcom" 
    android:orientation="horizontal" 
    android:layout_width="match_parent"
        android:layout_height="20dp"
         android:removed="@color/br"
         android:gravity="center"
    >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:fontFamily="@string/action_settings"
        
        android:text="sm shahrokni : welcome to my firste project of android. "
        android:textColor="@color/white" >
</TextView>
    
</LinearLayout>



 <LinearLayout
        android:id="@+id/header"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:removed="@color/br"
        android:orientation="horizontal"
        android:layout_marginTop="25dp" >
        
<TextView android:layout_width="0dp" android:gravity="center" android:layout_height="50dp" android:layout_weight="25" android:text="Name" android:textColor="@color/white"  />
<TextView android:layout_width="0dp" android:gravity="center"  android:layout_height="50dp" android:layout_weight="25" android:text="Family" android:textColor="@color/white" />
<TextView android:layout_width="0dp" android:gravity="center"  android:layout_height="50dp" android:layout_weight="25" android:text="Age" android:textColor="@color/white" />
<TextView android:layout_width="0dp" android:gravity="center"  android:layout_height="50dp" android:layout_weight="25" android:text="Gender" android:textColor="@color/white"  />

 </LinearLayout>
</RelativeLayout>

part 2 : java

    super.onCreate(savedInstanceState);
    setContentView(R.layout.mylayout);




  LinearLayout l=new LinearLayout(this);
  int i=1;
   for( i=0 ;i<=3;i++)
   {
       Button btn = new Button(this);
    btn.setText("hi "+i);
    btn.setId(i);
//   btn.setBackgroundColor(Color.RED);
//  btn.setTextColor(Color.RED);
    l.addView(btn);
     LayoutParams Params=btn.getLayoutParams();
        Params.height=40;
        Params.width=120;
        btn.setLayoutParams(Params);

   }
  setContentView(l);