动态添加控件有关问题

 LinearLayout linlayout = (LinearLayout)findViewById(R.id.line);
//                     LinearLayout.LayoutParams ll = new LayoutParams(LinearLayout.LayoutParams.FILL_PARENT, 
//                             LinearLayout.LayoutParams.FILL_PARENT);
                     RadioGroup rg = new RadioGroup(otherActivity.this);
                     RadioButton cate = new RadioButton(otherActivity.this);
                     cate.setText("收入");
                     RadioButton much = new RadioButton(otherActivity.this);
                     much.setText("支出");
                     rg.addView(cate);
                     rg.addView(much);
                     rg.setOrientation(LinearLayout.HORIZONTAL);
                     TextView mingmu = new TextView(otherActivity.this);
                     mingmu.setText("名目");
                     EditText edmingmu = new EditText(otherActivity.this);
                     TextView shumu = new TextView(otherActivity.this);
                     mingmu.setText("数目");
                     EditText edshumu = new EditText(otherActivity.this);
                     linlayout.addView(rg);
                     linlayout.addView(mingmu);
                     linlayout.addView(edmingmu);
                     linlayout.addView(shumu);
                     linlayout.addView(edshumu);

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
     >
    
  
    <DatePicker 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        />
           <ScrollView 
        android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:id="@+id/sv"
         >
         <LinearLayout 
             android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:id="@+id/line"
             >
            <RadioGroup 
                  android:layout_width="fill_parent"
                  android:layout_height="wrap_content"
                  android:orientation="horizontal"
                  android:gravity="center"
                >
                <RadioButton 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="收入"
                    android:checked="true"
                    android:id="@+id/income"
                    />
                 <RadioButton 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="支出"
                    android:id="@+id/outcome"
                    />
            </RadioGroup>
            <TextView 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="名目："
                />
            <EditText 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:id="@+id/categry"
                />
            
              <TextView 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:text="数目："
                />
            <EditText 
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:id="@+id/howmuch"
                />
              </LinearLayout>
         </ScrollView>
             
            <LinearLayout 
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">
                <Button 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="确定"
                    android:id="@+id/thirdenter"
                    />
                <Button 
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:text="添加更多"
                    android:id="@+id/thirdmore"
                    />
                
            </LinearLayout>
         
    
   

</LinearLayout>