ios - 如何从嵌套数组中的 NSmutablearray 获取对象值？

Question

我正在从 NSDictionary 中的 SQLite 获取数据，并将其转换为 NSMutableArray。现在我需要在 UITableViewCell 标签中添加该数组对象值。

arraydata (
    {
    UUID = 995443;
    "group_id" = 41917;
    name = "Maninderveer Kaur";
    "roll_no" = 1;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995445;
    "group_id" = 41917;
    name = "Manjot Kaur";
    "roll_no" = 2;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995447;
    "group_id" = 41917;
    name = "Prabhjot Sharma";
    "roll_no" = 3;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995449;
    "group_id" = 41917;
    name = "Prabhjot Singh";
    "roll_no" = 4;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995451;
    "group_id" = 41917;
    name = "Prince Parbhakar";
    "roll_no" = 5;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995453;
    "group_id" = 41917;
    name = "Puneet Kaur";
    "roll_no" = 6;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995455;
    "group_id" = 41917;
    name = "Rajveer Kaur";
    "roll_no" = 7;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995457;
    "group_id" = 41917;
    name = "Sahajpreet Kaur";
    "roll_no" = 8;
    "session_token" = bHKkctTPPyULIEy6rh4UKKTO9;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 1824273;
    "group_id" = 41933;
    name = Ankit;
    "roll_no" = 1104;
    "session_token" = 9Ea6FqaIKgr9gZ5Gh6UWhVQTj;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 1824271;
    "group_id" = 41933;
    name = Anuj;
    "roll_no" = 1103;
    "session_token" = 9Ea6FqaIKgr9gZ5Gh6UWhVQTj;
    status = present;
    "user_guid" = 995789;
},
    {
    UUID = 995695;
    "group_id" = 41933;
    name = "Anureet Kaur";
    "roll_no" = 14;
    "session_token" = 9Ea6FqaIKgr9gZ5Gh6UWhVQTj;
    status = present;
    "user_guid" = 995789;
},
  )

我已经通过这一行在单元格扩展标签上添加了数据。

cell.stdntName.text = [array valueForKey:@"name"];

在单元格标签上添加值时出现此错误:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSArrayI length]: unrecognized selector sent to instance 0x7ffcab275550'.

我认为以上细节还可以。请在我出错的地方提出一些建议。

Answer 1

根据索引路径从数组中提取特定字典，然后从该字典中获取值。

试试这个:

NSDictionary *dict = array[indexPath.row]
cell.stdntName.text = [dict valueForKey:@"name"];