我正在尝试使用按钮将数据存储到NSArray中，然后检索它以显示在表格中。但是，按下按钮后表格仍为空。我认为问题可能与Car对象如何被添加到数组然后存储在NSData中有关。
CarTableViewController.h
<rules>
<try>assigned1 = some_var</try>
<rule>
<try>assigned1 = some_var</try>
<identifier>
<try>assigned1 = some_var</try>
<success> = some_var | "a 'st</success>
<attributes>[[a, s, s, i, g, n, e, d, 1]]</attributes>
</identifier>
<expr_list>
<try> some_var | "a 'stri</try>
<expression>
<try> some_var | "a 'stri</try>
<terminal>
<try>some_var | "a 'strin</try>
<fail/>
</terminal>
<identifier>
<try>some_var | "a 'strin</try>
<success> | "a 'string' value</success>
<attributes>[[s, o, m, e, _, v, a, r]]</attributes>
</identifier>
<success> | "a 'string' value</success>
<attributes>[[Identifier, [s, o, m, e, _, v, a, r]]]</attributes>
</expression>
<expression>
<try> "a 'string' value" </try>
<terminal>
<try>"a 'string' value" |</try>
<success> | [ 'okay', "this",</success>
<attributes>[[a, , ', s, t, r, i, n, g, ', , v, a, l, u, e]]</attributes>
</terminal>
<success> | [ 'okay', "this",</success>
<attributes>[[Terminal, [a, , ', s, t, r, i, n, g, ', , v, a, l, u, e]]]</attributes>
</expression>
<expression>
<try> [ 'okay', "this", i</try>
<terminal>
<try>[ 'okay', "this", is</try>
<fail/>
</terminal>
<identifier>
<try>[ 'okay', "this", is</try>
<fail/>
</identifier>
<expr_list>
<try> 'okay', "this", is_</try>
<expression>
<try> 'okay', "this", is_</try>
<terminal>
<try>'okay', "this", is_a</try>
<success>, "this", is_another</success>
<attributes>[[o, k, a, y]]</attributes>
</terminal>
<success>, "this", is_another</success>
<attributes>[[Terminal, [o, k, a, y]]]</attributes>
</expression>
<expression>
<try> "this", is_another,</try>
<terminal>
<try>"this", is_another, </try>
<success>, is_another, identi</success>
<attributes>[[t, h, i, s]]</attributes>
</terminal>
<success>, is_another, identi</success>
<attributes>[[Terminal, [t, h, i, s]]]</attributes>
</expression>
<expression>
<try> is_another, identif</try>
<terminal>
<try>is_another, identifi</try>
<fail/>
</terminal>
<identifier>
<try>is_another, identifi</try>
<success>, identifier, { ( "n</success>
<attributes>[[i, s, _, a, n, o, t, h, e, r]]</attributes>
</identifier>
<success>, identifier, { ( "n</success>
<attributes>[[Identifier, [i, s, _, a, n, o, t, h, e, r]]]</attributes>
</expression>
<expression>
<try> identifier, { ( "ne</try>
<terminal>
<try>identifier, { ( "nes</try>
<fail/>
</terminal>
<identifier>
<try>identifier, { ( "nes</try>
<success>, { ( "nested" ) } ]</success>
<attributes>[[i, d, e, n, t, i, f, i, e, r]]</attributes>
</identifier>
<success>, { ( "nested" ) } ]</success>
<attributes>[[Identifier, [i, d, e, n, t, i, f, i, e, r]]]</attributes>
</expression>
<expression>
<try> { ( "nested" ) } ] </try>
<terminal>
<try>{ ( "nested" ) } ] |</try>
<fail/>
</terminal>
<identifier>
<try>{ ( "nested" ) } ] |</try>
<fail/>
</identifier>
<expr_list>
<try> ( "nested" ) } ] | </try>
<expression>
<try> ( "nested" ) } ] | </try>
<terminal>
<try>( "nested" ) } ] | "</try>
<fail/>
</terminal>
<identifier>
<try>( "nested" ) } ] | "</try>
<fail/>
</identifier>
<expr_list>
<try> "nested" ) } ] | "d</try>
<expression>
<try> "nested" ) } ] | "d</try>
<terminal>
<try>"nested" ) } ] | "do</try>
<success> ) } ] | "done"</success>
<attributes>[[n, e, s, t, e, d]]</attributes>
</terminal>
<success> ) } ] | "done"</success>
<attributes>[[Terminal, [n, e, s, t, e, d]]]</attributes>
</expression>
<success> ) } ] | "done"</success>
<attributes>[[[Terminal, [n, e, s, t, e, d]]]]</attributes>
</expr_list>
<success> } ] | "done"</success>
<attributes>[[Compound, [(, , ", n, e, s, t, e, d, ", , )]]]</attributes>
</expression>
<success> } ] | "done"</success>
<attributes>[[[Compound, [(, , ", n, e, s, t, e, d, ", , )]]]]</attributes>
</expr_list>
<success> ] | "done"</success>
<attributes>[[Compound, [{, , (, , ", n, e, s, t, e, d, ", , ), , }]]]</attributes>
</expression>
<success> ] | "done"</success>
<attributes>[[[Terminal, [o, k, a, y]], [Terminal, [t, h, i, s]], [Identifier, [i, s, _, a, n, o, t, h, e, r]], [Identifier, [i, d, e, n, t, i, f, i, e, r]], [Compound, [{, , (, , ", n, e, s, t, e, d, ", , ), , }]]]]</attributes>
</expr_list>
<success> | "done"</success>
<attributes>[[Compound, [[, , ', o, k, a, y, ', ,, , ", t, h, i, s, ", ,, , i, s, _, a, n, o, t, h, e, r, ,, , i, d, e, n, t, i, f, i, e, r, ,, , {, , (, , ", n, e, s, t, e, d, ", , ), , }, , ]]]]</attributes>
</expression>
<expression>
<try> "done"</try>
<terminal>
<try>"done"</try>
<success></success>
<attributes>[[d, o, n, e]]</attributes>
</terminal>
<success></success>
<attributes>[[Terminal, [d, o, n, e]]]</attributes>
</expression>
<success></success>
<attributes>[[[Identifier, [s, o, m, e, _, v, a, r]], [Terminal, [a, , ', s, t, r, i, n, g, ', , v, a, l, u, e]], [Compound, [[, , ', o, k, a, y, ', ,, , ", t, h, i, s, ", ,, , i, s, _, a, n, o, t, h, e, r, ,, , i, d, e, n, t, i, f, i, e, r, ,, , {, , (, , ", n, e, s, t, e, d, ", , ), , }, , ]]], [Terminal, [d, o, n, e]]]]</attributes>
</expr_list>
<success></success>
<attributes>[[[a, s, s, i, g, n, e, d, 1], [[Identifier, [s, o, m, e, _, v, a, r]], [Terminal, [a, , ', s, t, r, i, n, g, ', , v, a, l, u, e]], [Compound, [[, , ', o, k, a, y, ', ,, , ", t, h, i, s, ", ,, , i, s, _, a, n, o, t, h, e, r, ,, , i, d, e, n, t, i, f, i, e, r, ,, , {, , (, , ", n, e, s, t, e, d, ", , ), , }, , ]]], [Terminal, [d, o, n, e]]]]]</attributes>
</rule>
<rule>
<try></try>
<identifier>
<try></try>
<fail/>
</identifier>
<fail/>
</rule>
<success></success>
<attributes>[[[[a, s, s, i, g, n, e, d, 1], [[Identifier, [s, o, m, e, _, v, a, r]], [Terminal, [a, , ', s, t, r, i, n, g, ', , v, a, l, u, e]], [Compound, [[, , ', o, k, a, y, ', ,, , ", t, h, i, s, ", ,, , i, s, _, a, n, o, t, h, e, r, ,, , i, d, e, n, t, i, f, i, e, r, ,, , {, , (, , ", n, e, s, t, e, d, ", , ), , }, , ]]], [Terminal, [d, o, n, e]]]]]]</attributes>
</rules>
success
target: assigned1
rhs: (Identifier some_var)
rhs: (Terminal a 'string' value)
rhs: (Compound [ 'okay', "this", is_another, identifier, { ( "nested" ) } ])
rhs: (Terminal done)
<rules>
<try>assigned2 = { a }</try>
<rule>
<try>assigned2 = { a }</try>
<identifier>
<try>assigned2 = { a }</try>
<success> = { a }</success>
<attributes>[[a, s, s, i, g, n, e, d, 2]]</attributes>
</identifier>
<expr_list>
<try> { a }</try>
<expression>
<try> { a }</try>
<terminal>
<try>{ a }</try>
<fail/>
</terminal>
<identifier>
<try>{ a }</try>
<fail/>
</identifier>
<expr_list>
<try> a }</try>
<expression>
<try> a }</try>
<terminal>
<try>a }</try>
<fail/>
</terminal>
<identifier>
<try>a }</try>
<success> }</success>
<attributes>[[a]]</attributes>
</identifier>
<success> }</success>
<attributes>[[Identifier, [a]]]</attributes>
</expression>
<success> }</success>
<attributes>[[[Identifier, [a]]]]</attributes>
</expr_list>
<success></success>
<attributes>[[Compound, [{, , a, , }]]]</attributes>
</expression>
<success></success>
<attributes>[[[Compound, [{, , a, , }]]]]</attributes>
</expr_list>
<success></success>
<attributes>[[[a, s, s, i, g, n, e, d, 2], [[Compound, [{, , a, , }]]]]]</attributes>
</rule>
<rule>
<try></try>
<identifier>
<try></try>
<fail/>
</identifier>
<fail/>
</rule>
<success></success>
<attributes>[[[[a, s, s, i, g, n, e, d, 2], [[Compound, [{, , a, , }]]]]]]</attributes>
</rules>
success
target: assigned2
rhs: (Compound { a })
CarTableViewController.m
echo '<div class="table-responsive">
<table class="table table-striped table-hover">
<thead>
<tr>
<td>Id</td>
<td>Articles Category</td>
<td>Update</td>
<td>Delete</td>
</tr>
</thead>
<tbody>
<tr>';
<?php
$con = new mysqli("localhost", "root", "", "whatever");
$sql = "SELECT id_kategori, nama_kategori FROM kategori";
$stmt = $con->prepare($sql);
$stmt->execute();
$stmt->bind_result($id, $cat);
while($stmt->fetch())
{
echo "<td>$id</td>";
echo "<td>$cat</td>";
echo "<td>Update</td>";
echo "<td>Delete</td>";
}
$stmt->close();
?>
echo '</tr>
</tbody>
</table>
</div>';
答案 0 :(得分：2)
您的代码对我来说很好，但我认为您没有调用在任何地方添加数据[self storeDataInNSUserDefaults:car]的方法。