訪問線性佈局？

我是Android的初學者。我正在使用ndk應用程序。我有觸摸板類並擴展了Linearlayout。我也使用這種類型的XML文件。這個XML文件無法訪問。我下面有例外。如何訪問這個XML文件和那個類。訪問線性佈局？

<?xml version="1.0" encoding="utf-8"?> 
<org.android.TouchpadLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@+id/touchpad" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" > 

    <ImageButton 
     android:id="@+id/keyboard" 
     android:layout_width="64dp" 
     android:layout_height="64dp" 
     android:layout_alignParentRight="true" 
     android:background="@drawable/dreamote_btn" 
     android:scaleType="centerInside" 
     android:src="@+drawable/keyboard" /> 

    <LinearLayout 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:gravity="center" > 

     <ImageView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:adjustViewBounds="true" 
      android:maxHeight="48dip" 
      android:src="@drawable/gmote_touch_flat" 
      android:tint="#99000000" /> 
    </LinearLayout> 

</org.android.TouchpadLayout>

在此基礎上類

public class TouchpadLayout extends LinearLayout { 
    public TouchpadLayout(Context context, AttributeSet attrs) { 
    super(context, attrs); 
    } 

    @Override 
    public boolean onKeyDown(int keyCode, KeyEvent event) { 
    return false; 
    } 

    @Override 
    public InputConnection onCreateInputConnection(EditorInfo outAttrs) { 
    return new BaseInputConnection(this, false) { 
     @Override 
     public boolean sendKeyEvent(KeyEvent event) { 
     return super.sendKeyEvent(event); 
     } 

     @Override 
     public boolean performEditorAction(int actionCode) { 
     sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_ENTER)); 
     return super.performEditorAction(actionCode); 
     } 
    }; 
    } 

}

獲取例外的： enter image description here