併發修改例外鏈接哈希地圖的Android

Question

我使用迭代器從鏈接哈希映射刪除項目，但得到的併發修改例外

Iterator<Integer> it = linkedMap.keySet().iterator(); 

    while (it.hasNext()) { 
     java.lang.Integer key = it.next(); 
     if (key.equals(number)) { 
      linkedMap.remove(key); 
     } 
    } 

請幫助..

Answer 1

您需要刪除iterator時檢查條件不是linkedMAp

Iterator<Integer> it = linkedMap.keySet().iterator(); 
    while (it.hasNext()) { 
    Integer key = it.next(); 
     if (key.equals(number)) { 
      // Remove the current element from the iterator and the list. 
      it.remove(); 
     } 
    } 

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Iterating through a Collection, avoiding ConcurrentModificationException when removing in loop