getScaledTouchSlop() 的返回值為 int 類型，表示一次滑動的距離。一般的用法為：獲得?手指的滑動距離，值為 A ，當(dāng)? A 的大小大于該 API 返回的值時開始滑動控件，反之，控件不移動。

ViewConfiguration 相關(guān)屬性的獲取方式

ViewConfiguration.get(context).getXXX();

ViewConfiguration 滑動參數(shù)?類

/**
*Contains methods to standard constants used in the UI for *timeouts, sizes, and distances.
* UI 中時間、大小、距離的常量
*/
public class ViewConfiguration {     
   // 設(shè)定水平滾動條的寬度和垂直滾動條的高度，單位是像素px     
   private static final int SCROLL_BAR_SIZE = 10;     
        
   //定義滾動條逐漸消失的時間，單位是毫秒     
   private static final int SCROLL_BAR_FADE_DURATION = 250;     
        
   // 默認(rèn)的滾動條多少秒之后消失，單位是毫秒     
   private static final int SCROLL_BAR_DEFAULT_DELAY = 300;     
        
   // 定義邊緣地方褪色的長度     
   private static final int FADING_EDGE_LENGTH = 12;     
        
   //定義子控件按下狀態(tài)的持續(xù)事件     
   private static final int PRESSED_STATE_DURATION = 125;     
            
   //定義一個按下狀態(tài)轉(zhuǎn)變成長按狀態(tài)的轉(zhuǎn)變時間     
   private static final int LONG_PRESS_TIMEOUT = 500;     
            
   //定義用戶在按住適當(dāng)按鈕，彈出全局的對話框的持續(xù)時間     
   private static final int GLOBAL_ACTIONS_KEY_TIMEOUT = 500;     
            
   //定義一個touch事件中是點(diǎn)擊事件還是一個滑動事件所需的時間，如果用戶在這個時間之內(nèi)滑動，那么就認(rèn)為是一個點(diǎn)擊事件     
   private static final int TAP_TIMEOUT = 115;     
            
   /**    
    * Defines the duration in milliseconds we will wait to see if a touch event     
    * is a jump tap. If the user does not complete the jump tap within this interval, it is    
    * considered to be a tap.     
    */ 
   //定義一個touch事件時候是一個點(diǎn)擊事件。如果用戶在這個時間內(nèi)沒有完成這個點(diǎn)擊，那么就認(rèn)為是一個點(diǎn)擊事件     
   private static final int JUMP_TAP_TIMEOUT = 500;     
        
   //定義雙擊事件的間隔時間     
   private static final int DOUBLE_TAP_TIMEOUT = 300;     
            
   //定義一個縮放控制反饋到用戶界面的時間     
   private static final int ZOOM_CONTROLS_TIMEOUT = 3000;     
        
   /**    
    * Inset in pixels to look for touchable content when the user touches the edge of the screen    
    */ 
   private static final int EDGE_SLOP = 12;     
            
   /**    
    * Distance a touch can wander before we think the user is scrolling in pixels    
    */ 
   private static final int TOUCH_SLOP = 16;     
            
   /**    
    * Distance a touch can wander before we think the user is attempting a paged scroll    
    * (in dips)    
    */ 
   private static final int PAGING_TOUCH_SLOP = TOUCH_SLOP * 2;     
            
   /**    
    * Distance between the first touch and second touch to still be considered a double tap    
    */ 
   private static final int DOUBLE_TAP_SLOP = 100;     
            
   /**    
    * Distance a touch needs to be outside of a window's bounds for it to    
    * count as outside for purposes of dismissing the window.    
    */ 
   private static final int WINDOW_TOUCH_SLOP = 16;     
        
  //用來初始化fling的最小速度，單位是每秒多少像素     
   private static final int MINIMUM_FLING_VELOCITY = 50;     
            
   //用來初始化fling的最大速度，單位是每秒多少像素     
   private static final int MAXIMUM_FLING_VELOCITY = 4000;     
        
   //視圖繪圖緩存的最大尺寸，以字節(jié)表示。在ARGB888格式下，這個尺寸應(yīng)至少等于屏幕的大小     
   @Deprecated     
   private static final int MAXIMUM_DRAWING_CACHE_SIZE = 320 * 480 * 4; // HVGA screen, ARGB8888     
        
   //flings和scrolls摩擦力度大小的系數(shù)     
   private static float SCROLL_FRICTION = 0.015f;     
        
   /**    
    * Max distance to over scroll for edge effects    
    */ 
   private static final int OVERSCROLL_DISTANCE = 0;     
        
   /**    
    * Max distance to over fling for edge effects    
    */ 
   private static final int OVERFLING_DISTANCE = 4;    

• 具體更細(xì)節(jié)的 API 信息