list.add（“东西”）; 崩溃

Question

I'm trying to make a simple list.

I've got this:

    String valuesArray[] = {"473", "592", "1774", "341", "355", "473", "950", "500", "44", "946.35", "750", "950"};
    List<String> valueList = Arrays.asList(valuesArray); 

Whenever I try to add something to the list, it force closes.

    valueList.add("Test");

And it really seems to only happen when I try to add to the list. I'm able to get values from the list, just not add to it.

Answer 1

As you can see from the docs for Arrays.asList() , the List returned from that method is fixed size. If you want something more versatile, you might try:

List<String> valueList = new ArrayList<String>(Arrays.asList(valuesArray));

Answer 2

Arrays.asList() returns a fixed size list . You cannot add to it.

Answer 3

另一种选择是循环遍历数组并一次添加一个，然后，它将不是列表的固定大小，您可以执行所需的所有列表操作。