@Override 
  public boolean dispatchTouchEvent(MotionEvent ev) { 
    if (ev.getAction() == MotionEvent.ACTION_DOWN) { 
      View v = getActivity().getCurrentFocus(); 
      if (isShouldHideInput(v, ev)) { 
 
        InputMethodManager imm = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE); 
        if (imm != null) { 
          imm.hideSoftInputFromWindow(v.getWindowToken(), 0); 
        } 
      } 
      return getActivity().dispatchTouchEvent(ev); 
    } 
    // 必不可少，否則所有的組件都不會有TouchEvent了 
    if (getActivity().getWindow().superDispatchTouchEvent(ev)) { 
      return true; 
    } 
    return getActivity().onTouchEvent(ev); 
  } 
 
  public boolean isShouldHideInput(View v, MotionEvent event) { 
    if (v != null && (v instanceof EditText)) { 
      int[] leftTop = { 0, 0 }; 
      //獲取輸入框當前的location位置 
      v.getLocationInWindow(leftTop); 
      int left = leftTop[0]; 
      int top = leftTop[1]; 
      int bottom = top + v.getHeight(); 
      int right = left + v.getWidth(); 
      if (event.getX() > left && event.getX() < right 
          && event.getY() > top && event.getY() < bottom) { 
        // 點擊的是輸入框區域，保留點擊EditText的事件 
        return false; 
      } else { 
        return true; 
      } 
    } 
    return false; 
  }