觀察下面兩段代碼,發現只是map的聲明位置不一樣,可是運行出的結果卻相去甚遠。code
//代碼一 List<HashMap<String, Object>> mMenuData = new ArrayList<>(); HashMap<String, Object> map = new HashMap<>(); for (int i = 0; i < menuShareImg.length; i++) { map.put("shareStr", menuShareStr[i]); map.put("shareImg", menuShareImg[i]); mMenuData.add(map); }
//代碼二 List<HashMap<String, Object>> mMenuData = new ArrayList<>(); for (int i = 0; i < menuShareImg.length; i++) { HashMap<String, Object> map = new HashMap<>(); map.put("shareStr", menuShareStr[i]); map.put("shareImg", menuShareImg[i]); mMenuData.add(map); }
代碼一會產生上述問題,代碼二則能消除問題。List