SwipeView类似桌面的滑动界面(2)

    } 
     
    /**
     * {@inheritDoc}
     */ 
    public SwipeView(Context context, AttributeSet attrs, int defStyle) 
    { 
        super(context, attrs,defStyle); 
        mContext = context; 
        initSwipeView(); 
    } 
     
    private void initSwipeView() 
    { 
        Log.i("uk.co.jasonfry.android.tools.ui.SwipeView","Initialising SwipeView"); 
        mLinearLayout = new LinearLayout(mContext); 
        mLinearLayout.setOrientation(LinearLayout.HORIZONTAL); 
        super.addView(mLinearLayout, -1, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT)); 
         
        setSmoothScrollingEnabled(true); 
        setHorizontalFadingEdgeEnabled(false); 
        setHorizontalScrollBarEnabled(false); 
         
        Display display = ((WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE)).getDefaultDisplay();  
        SCREEN_WIDTH = (int) (display.getWidth()); 
        mPageWidth = SCREEN_WIDTH; 
        mCurrentPage = 0; 
         
        mSwipeOnTouchListener = new SwipeOnTouchListener(); 
        super.setOnTouchListener(mSwipeOnTouchListener); 
    } 
     
    /**
     * {@inheritDoc}
     */ 
    @Override 
    public boolean onTrackballEvent(MotionEvent event) 
    { 
        return true; 
    } 
     
    @Override 
    protected boolean onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect) 
    { 
        //this will now pass trackball events down to onTrackballEvent