java - 将 ArrayList<customtype> 转换为 CharSequence[]

Question

我有一个自定义的 ArrayList，想将其转换为 CharSequence[]。

我试过了

List<String> list = Arrays.asList("foo", "bar", "waa");
CharSequence[] cs = list.toArray(new CharSequence[list.size()]);
System.out.println(Arrays.toString(cs)); // [foo, bar, waa]

但它仅适用于字符串类型。

Answer 1

我是这样解决的

ArrayList<customtype> dir = new ArrayList<customtype>();
ArrayList<String> listing = new ArrayList<String>();
    customtype item;
    for(int i=0;i<dir.size();i++)
    {
        item = dir.get(i);
        listing.add(item.getPath()); 
    //getPath is a method in the customtype class which will return value in string format

      }
final CharSequence[] fol_list = listing.toArray(new CharSequence[listing.size()]);
//fol_list will have all the strings from getPath();