是的,您必须声明一个新的NSMutableArray
(例如_selectedList
)数据源计数。用值为 0 的 NSNumber 填充它。
NSMutableArray *_selectedList;
在 .h 文件中声明(作为类成员)
在viewDidLoad
或init
方法中,
_selectedList = [[NSMutableArray alloc] init];
for( int i = 0; i < [datasource count]; i++ )
{
[_selectedList addObject:[NSNumber numberWithBool:NO]];
}
并制作如下方法。
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//...
if (! [[_selectedList objectAtIndex:indexPath.row] boolValue]) {
//Deselected
cell.accessoryType = UITableViewCellAccessoryNone;
cell.backgroundColor=[UIColor clearColor];
} else {
//Selected
cell.accessoryType = UITableViewCellAccessoryCheckmark;
cell.backgroundColor=[UIColor redColor];
}
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark) {
//Deselect
cell.accessoryType = UITableViewCellAccessoryNone;
cell.backgroundColor=[UIColor clearColor];
} else {
//Select
cell.accessoryType = UITableViewCellAccessoryCheckmark;
cell.backgroundColor=[UIColor redColor];
}
BOOL isSelected = ![[_selectedList objectAtIndex:indexPath.row] boolValue];
[_selectedList replaceObjectAtIndex:indexPath.row withObject:[NSNumber numberWithBool:isSelected]];
}