Objective c 目标c-如何在数组中添加复选框的选中/未选中值

如果复选框被选中，我想保存值TRUE；如果在数组中未选中，我想保存值FALSE，我该怎么做呢。我已经在tableview中实现了复选框。代码是

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    BOOL checked = [[checkedArr objectAtIndex:indexPath.row] boolValue];
    [checkedArr removeObjectAtIndex:indexPath.row];
    [cheval insertObject:(checked) ? @"FALSE":@"TRUE" atIndex:indexPath.row];
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    UIButton *button = (UIButton *)cell.accessoryView;
    UIImage *newImage = (checked) ? [UIImage imageNamed:@"tick.png"] : [UIImage imageNamed:@"white_bg.png"];
    [button setBackgroundImage:newImage forState:UIControlStateNormal];
    cell.accessoryView=button;
}

这将当前向

cheval

数组添加值的字符串表示形式。您可以将此更改为：

[cheval insertObject:@(checked) atIndex:indexPath.row];

要将字符串更改为

NSNumber

（以便您可以在其上调用

boolValue

。

请尝试以下操作：

[array2 insertObject:[NSNumber numberWithBool:[checkButton state]] atIndex:indexPath.row];

checkButton是复选框的出口

NSMutableArray与C数组不同。它更像是一个列表。所以

BOOL checked=[[checkedArr objectAtIndex:indexath.row]boolValue]； [checkedArr removeObjectAtIndex:indexPath.row]

不会像你想的那样工作

另外

[cheval insertObject:（选中）@“FALSE”：@“TRUE”atIndex:indexath.row]cheval

包含的对象少于

indexPath.row

，则code>将崩溃

我建议使用

NSMutableDictionary

而不是

NSMutableArray

。您可以使用

nsindepath

对象作为键。并更改一点算法：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSIndexPath *indexPathKey = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]; // we use this code because in iOS 7 indexPath has type UIMutableIndexPath
    BOOL checked = ![checkedDict[indexPathKey] boolValue];
    checkedDict[indexPathKey] = @(checked);
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    UIButton *button = (UIButton *)cell.accessoryView;
    UIImage *newImage = (checked) ? [UIImage imageNamed:@"tick.png"] : [UIImage imageNamed:@"white_bg.png"];
    [button setBackgroundImage:newImage forState:UIControlStateNormal];
    cell.accessoryView=button;
}

还有，为什么不使用默认复选标记呢。如果使用它，则应按以下方式更改代码：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSIndexPath *indexPathKey = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]; // we use this code because in iOS 7 indexPath has type UIMutableIndexPath
    BOOL checked = ![checkedDict[indexPathKey] boolValue];
    checkedDict[indexPathKey] = @(checked);
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    cell.accessoryType = checked ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;
}

---

你试过上面的代码吗？结果是什么？我想使用一个自定义复选标记，这样小图标将显示为选中，其他图像将显示为未选中。

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSIndexPath *indexPathKey = [NSIndexPath indexPathForRow:indexPath.row inSection:indexPath.section]; // we use this code because in iOS 7 indexPath has type UIMutableIndexPath
    BOOL checked = ![checkedDict[indexPathKey] boolValue];
    checkedDict[indexPathKey] = @(checked);
    UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
    cell.accessoryType = checked ? UITableViewCellAccessoryCheckmark : UITableViewCellAccessoryNone;
}