這個問題是由於我們想加入的view已經存在parent導致，一般我們只需要呼叫((ViewGroup)view.getParent()).removeView(view)即可，可是有些時候並不能解決問題。這時候可以參考以下程式碼。

        if (child.getParent() instanceof ViewGroup) {
            ViewGroup parent = (ViewGroup) child.getParent();
            LayoutTransition layoutTransition = null;
            if (parent.getLayoutTransition() != null) {
                layoutTransition = parent.getLayoutTransition();
                parent.setLayoutTransition(null);
            }
            parent.removeView(child);
            if (layoutTransition != null) {
                parent.setLayoutTransition(layoutTransition);
            }

            if (child.getParent() != null) {
                // LayoutTransition 將會造成removeView延遲，取消它
                ViewGroupUtils.cancelLayoutTransition(parent);
                // 假如view還是由於某些原因存在view
                if (child.getParent() != null && FIELD_VIEW_PARENT != null) {
                    //通過反射直接把parent設為空
                    ReflectionUtils.setFieldValue(child, ReflectionUtils.getPrivateField(View.class, "mParent"), null);
                }
            }

            //還存在parent，暫時放棄= =
            if (child.getParent() != null) {
                return;
            }
        }
 

public boolean cancelLayoutTransition(ViewGroup group) {
            if (group != null) {
                final LayoutTransition layoutTransition = group.getLayoutTransition();
                if (layoutTransition != null && layoutTransition.isRunning() &&
                        METHOD_LAYOUT_TRANSITION_CANCEL != null) {
                    //由於cancel方法是@hide，所以需要反射呼叫
                    ReflectionUtils.invoke(group.getLayoutTransition(), null, ReflectionUtils.getPrivateMethod(LayoutTransition.class, "cancel"));
                    return true;
                }
            }
            return false;
        }