问findViewById()问题

EN

//////// Options.java /////  
public class Options extends Activity {  
/** Called when the activity is first created. */  
    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.reclayout);  
        //Button STO = (Button)findViewById(R.id.StopBut);  
        //Button REC = (Button)findViewById(R.id.RecButton);  
    }  
}  

///////reclayout.xml/////  
<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout  
    xmlns:android="http://schemas.android.com/apk/res/android"  
    android:layout_height="fill_parent"  
    android:layout_width="fill_parent"  
    android:orientation="vertical"  
    android:gravity="center_vertical">
    <Spinner   
        android:id="@+id/Spinner01"  
        android:layout_height="wrap_content"  
        android:layout_width="fill_parent"  
        android:contentDescription="Classes"/>  
    <EditText  
        android:layout_height="wrap_content"   
        android:layout_width="fill_parent"   
        android:lines="3"   
        android:id="@+id/DescriptionText"   
        android:text="Class Description"/>  
    <LinearLayout  
        android:layout_height="wrap_content"   
        android:id="@+id/ButtonLayout"   
        android:orientation="horizontal"   
        android:layout_width="fill_parent">  
        <ImageButton  
            android:layout_height="wrap_content"   
            android:layout_width="fill_parent"   
            android:layout_weight="3"   
            android:id="@+id/RecButton"   
            android:focusableInTouchMode="true"   
            android:src="@drawable/rec"/>  
        <ImageButton   
            android:layout_height="wrap_content"   
            android:layout_width="fill_parent"   
            android:layout_weight="3"   
            android:id="@+id/PauseButton"   
            android:src="@drawable/pause"/>  
        <ImageButton   
            android:layout_height="wrap_content"   
            android:layout_width="fill_parent"   
            android:layout_weight="3"   
            droid:src="@drawable/stop"   
            android:id="@+id/StopBut"/></LinearLayout></LinearLayout>`