Andriod 字符串数组里加入字符串元素

private String[] t1 = { "姓名", "性别", "年龄", "居住地","邮箱"}; 
  private String[] t2 = { "般若", "男", "25", "北京", "bangruo@gmail.com" }; 
  private String[] mListTitle = null; 
  private String[] mListStr = null; 
  private int int_close = 0;

mListTitle = insert(t1, "订单编号");
    mListStr = insert(t2, "退出");

//////////////string[]添加元素函数/////////////////
    private static String[] insert(String[] arr, String str)
    {
        int size = arr.length;
       
        String[] tmp = new String[size + 1];
       
        System.arraycopy(arr, 0, tmp, 0, size);
       
        tmp[size] = str;
       
        return tmp;
    }
    ////////////////////////////////