请帮助我一直在努力回传数据。我有2个tableViews。 1st tableview = static table = RootVC。 2nd tableview = dynamic table = FirstVC。在RootVC中，我有一个带有两个标签的单元格，“repeatLabel”和“repeatDetail”，带有披露指示符。当我点击单元格时，它显示下一个表格，即FirstVC，FistVC填充了工作日。选择我的选择之后，我希望选择的日期在“repeatDetail”中传回RootVC，当我返回时仍然能够看到以前选择的数据。
我的RootVC看起来像这样：
#import "RepeatViewController.h"
@interface SettingsViewController : UITableViewController
@property (strong, nonatomic) IBOutlet UILabel *repeatDetail;
@property (strong, nonatomic) IBOutlet UILabel *repeatLabel;
@property (strong,nonatomic) NSString *getRepeatDetail;
@property (nonatomic, strong) NSMutableArray *selectedDaysArray;
@end
in my RootVC.m
#import "SettingsViewController.h"
@interface SettingsViewController ()
@end
@implementation SettingsViewController
@synthesize repeatLabel,repeatDetail;
@synthesize getRepeatLabel;
@synthesize selectedDaysArray;
- (void)viewDidLoad
{
[super viewDidLoad];
repeatLabel.text = @"Repeat";
repeatDetail.text = getRepeatLabel;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
RepeatViewController *destinationController = segue.destinationViewController;
if( [destinationController isKindOfClass:[RepeatViewController class]] )
{
//You can reuse your selectedDays arrays
destinationController.selectedDays = self.selectedDaysArray;
[(RepeatViewController *)destinationController setCompletionBlock:^(NSArray *retDaysArray) // <- make this change
{
// Save your changes
self.selectedDaysArray = [NSMutableArray arrayWithArray: retDaysArray]; // <- make this change
NSLog(@"retDaysArray: %@", self.selectedDaysArray); //<- Add this debug line
}];
}
}
@end
My 1stVC.h
#import "SettingsViewController.h"
typedef void(^WeekdayCompletionBlock)(NSArray *retDaysArray);
@interface RepeatViewController : UITableViewController <UITableViewDataSource,UITableViewDelegate>
@property (nonatomic,strong) NSMutableArray *selectedDays;
@property (nonatomic, copy) NSArray *completionBlock;
@property (copy) WeekdayCompletionBlock returnBlock;
//@property (strong, nonatomic) IBOutlet UIBarButtonItem *saveButton;
-(IBAction)save:(id)sender;
@end
my 1stVC.m
#import "RepeatViewController.h"
@interface RepeatViewController ()
@end
@implementation RepeatViewController
@synthesize selectedDays= _selectedDays;
@synthesize completionBlock;
@synthesize returnBlock;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
completionBlock = [NSArray arrayWithObjects:@"Sunday", @"Monday", @"Tuesday", @"Wednesday", @"Thursday", @"Friday", @"Saturday", nil];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return 7;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellIdentifier = @"RepeatCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:cellIdentifier];
}
NSString *day = completionBlock[indexPath.row];
cell.textLabel.text = day;
if ([self.selectedDays containsObject:day])
cell.accessoryType = UITableViewCellAccessoryCheckmark;
else
cell.accessoryType = UITableViewCellAccessoryNone;
//cell.textLabel.text = [completionBlock objectAtIndex:indexPath.row];
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (!self.selectedDays)
self.selectedDays = [[NSMutableArray alloc] init];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
cell.accessoryType = UITableViewCellAccessoryNone;
//remove data from array
[self.selectedDays removeObject:[completionBlock objectAtIndex:indexPath.row]];
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
//add data to array
[self.selectedDays addObject:[completionBlock objectAtIndex:indexPath.row]];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
-(IBAction)save:(id)sender
{
NSUserDefaults *myNewWeekString = [NSUserDefaults standardUserDefaults];
[myNewWeekString setObject:self.selectedDays forKey:@"MY_KEY_FOR_ACCESING_DAYSOFWEEK"];
[myNewWeekString synchronize];
//NSLog(@"The selected day/s is %@",self.selectedDays);
if (self.returnBlock)
{
self.returnBlock(self.selectedDays);
}
[self.navigationController popViewControllerAnimated:YES];
// NSLog(@"The selected day/s is %@",self.selectedDays);
// if (self.returnBlock)
// {
// self.returnBlock([completionBlock objectAtIndex:indexPath.row]);
//}
}
/*
-(void) setReturnBlock:(WeekdayCompletionBlock)returnBlock
{
[self.selectedDays addObject:(self.returnArray);
}
- (NSArray *)setDats
{
return [NSArray arrayWithArray:[self.selectedDays copy]];
}*/
@end
答案 0 :(得分：0)
当你使用静态单元格时，你必须直接绑定你正在使用的控件，没有必要。
所以我建议你如下：
可能不是最好的，但应该有效。
答案 1 :(得分：0)
您必须将数据（之前由用户选择）从RootVC传递到FirstVC。要在RootVC添加属性中执行此操作以保留选定的数据;
@property (nonatomic, strong) NSMutableArray *selectedDaysArray;
在prepareForSegue方法中，您必须传递该数组以使表视图知道需要选择的内容：
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
UIViewController *destinationController = segue.destinationViewController;
if( [destinationController isKindOfClass:[RepeatViewController class]] )
{
//You can reuse your selectedDays arrays
((RepeatViewController*)destinationController).selectedDays = self.selectedDaysArray;
[(RepeatViewController *)destinationController setReturnBlock:^(NSArray *retDaysArray) // <- make this change
{
// Save your changes
self.selectedDaysArray = [NSMutableArray arrayWithArray: retDaysArray]; // <- make this change
NSLog(@"DATA: %@", self.selectedDaysArray) //<- Add this debug line
}];
}
}
从viewDidLoad中删除此行，您不想每次都从rootVC传递它时分配它
_selectedDays = [[NSMutableArray alloc] init];
在cellForRowInIndexPath中替换此行：
cell.textLabel.text = [completionBlock objectAtIndex:indexPath.row];
使用此代码：
NSString *day = completionBlock[indexPath.row];
cell.textLabel.text = day;
if ([self.selectedDays containsObject:day])
cell.accessoryType = UITableViewCellAccessoryCheckmark;
else
cell.accessoryType = UITableViewCellAccessoryNone;
并将didSelectRowAtIndexPath：更改为
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
if (!self.selectedDays)
self.selectedDays = [[NSMutableArray alloc] init];
if (cell.accessoryType == UITableViewCellAccessoryCheckmark)
{
cell.accessoryType = UITableViewCellAccessoryNone;
//remove data from array
[self.selectedDays removeObject:[completionBlock objectAtIndex:indexPath.row]];
}
else
{
cell.accessoryType = UITableViewCellAccessoryCheckmark;
//add data to array
[self.selectedDays addObject:[completionBlock objectAtIndex:indexPath.row]];
}
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
希望得到这个帮助。