我有一个UITableViewController,其中包含许多UITableViewCell。每个单元格都有一个UISwitch按钮。
这是我的UITableViewController类:
@implementation DanhsachTableViewController{
NSMutableArray *data;
}
- (void)viewDidLoad {
[super viewDidLoad];
[self loadData];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DichVu2TableViewCell *cell = (DichVu2TableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"dscell"];
NSDictionary *dataCell = data[indexPath.row];
cell.service = dataCell[@"service"];
cell.package = dataCell[@"package"];
cell.loai_goi = dataCell[@"loai_goi"];
return cell;
}
-(void) changeCellState:(NSString *)service package:(NSString *)package loaigoi:(NSString *)loai_goi{
for (int i =0;i<data.count;i++){
DichVu2TableViewCell *cellLocal = [self.tableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]];
if ([service isEqualToString:cellLocal.service] && ![package isEqualToString:cellLocal.package] && [loai_goi isEqualToString:cellLocal.loai_goi]){
[cellLocal.sudung setOn:NO animated:YES];
}
}
}
在方法loadData中,数据数组被加载(这里不重要所以我没有包含它)。
在UITableViewCell(类名:DichVu2TableViewCell)中,我设置Switch的事件Value Change,以便每当一个Switch改变值(例如ON),所有其他具有相同值“service”和“loai_goi”的单元格的Switch都将被设置为OFF。
DanhsachTableViewController *tableview = [[DanhsachTableViewController alloc] init];
tableview.tableView.delegate = (DanhsachTableViewController *)self.superview.superview;
[tableview changeCellState:_service package:_package loaigoi:_loai_goi];
但是当我调用上述表格视图的数组"data"时,它没有对象,所以什么也没有发生。
有没有什么方法可以解决这个问题?
嗨,Oyeoj, 感谢您的帮助。
在按照您的指导操作时,我遇到了一些错误。在使用提取代码时,Xcode中出现了一些错误,因此我必须进行自定义。但是程序运行时仍然出现错误。请问您是否可以帮我检查一下我的代码。先行致谢。
DichVu2TableViewCell.h
@class DichVu2TableViewCell;
//Change : NSObject to <NSObject> because XCode 6.3 has error.
@protocol DichVu2TableViewCellDelegate <NSObject>
-(void)changeCell:(DichVu2TableViewCell *)sender state:(NSString *)service package:(NSString *)package loaigoi:(NSString *)loai_goi;
@end
@interface DichVu2TableViewCell : UITableViewCell
@property (weak) id <DichVu2TableViewCellDelegate> delegate;
@end
DichVu2TableViewCell.m
@implementation DichVu2TableViewCell
….
- (void)someSwitchingEvent
{
[self.delegate changeCell:self state:_service package:_package loaigoi:_loai_goi];
}
@end
DanhsachTableViewController.h
@interface DanhsachTableViewController : UITableViewController
@property (strong,nonatomic) NSString *loaitb;
@property (strong,nonatomic) NSString *type;
@property (strong,nonatomic) NSString *name;
@property NSMutableArray *pre_inuse_;
@property NSMutableArray *data_inuse_;
@property NSMutableArray *vas_inuse_;
@end
DanhsachTableViewController.m
#import "DichVu2TableViewCell.h"
//Change <DichVu2TableViewCellDelegate> to (DichVu2TableViewCellDelegate) because XCode 6.3 has error.
@interface DanhsachTableViewController (DichVu2TableViewCellDelegate)
@property (nonatomic) NSIndexPath *forUpdateIndexPath;
@end
@implementation DanhsachTableViewController{
NSMutableArray *data;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
DichVu2TableViewCell *cell = (DichVu2TableViewCell *)[tableView dequeueReusableCellWithIdentifier:@"dscell"];
NSDictionary *dataCell = data[indexPath.row];
cell.service = dataCell[@"service"];
cell.package = dataCell[@"package"];
cell.loai_goi = dataCell[@"loai_goi"];
cell.kieu_goi = dataCell[@"kieu_goi"];
[cell.sudung setOn:NO animated:YES];
cell.delegate = self;
//Change cellLocal —> cell because there are no cellLocal avaiable. And Program error when run to this row.
[cell.sudung setOn:(self.forUpdateIndexPath == indexPath) animated:YES];
return cell;
}
-(void)changeCell:(DichVu2TableViewCell *)sender state:(NSString *)service package:(NSString *)package loaigoi:(NSString *)loai_goi
{
//Add cellLocal —> cell because there are no cellLocal avaiable
DichVu2TableViewCell *cellLocal = (DichVu2TableViewCell *)[self.tableView cellForRowAtIndexPath:self.forUpdateIndexPath];
if ([service isEqualToString:cellLocal.service] && ![package isEqualToString:cellLocal.package] && [loai_goi isEqualToString:cellLocal.loai_goi]){
// get the indexPath of the cell
self.forUpdateIndexPath = [self.tableView indexPathForCell:sender];
// update the date source
NSMutableDictionary *dataCell = [data[self.forUpdateIndexPath.row] mutableCopy];
[dataCell setObject:service forKey:@"service"];
[dataCell setObject:package forKey:@"package"];
[dataCell setObject:loai_goi forKey:@"loai_goi"];
// you dont need the for-statement just reload the table
[self.tableView reloadData];
// then update the switch inside `- cellForRowAtIndexPath`
}
}