如何在两个UITableViewControllers之间传递数据

Question

我想在两个UITableViewControllers之间传递数据。在第一的UITableViewController我显示NewPackageViewController其中包含像一些细胞在下面的代码：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{ 

switch (indexPath.section) 
{ 
    case ...: 
break; 
........ 
    case 2: 
UIStoryboard *storyBoard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil]; 
UIViewController *vc = [storyBoard 
instantiateViewControllerWithIdentifier:@"SelectStoreView"]; 
UINavigationController *navController = [[UINavigationController 
alloc]initWithRootViewController:vc]; 
[self.navigationController presentViewController:navController animated:YES 
completion:nil]; 
break; } 
default: 
break; 

在：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{ 


static NSString *CellIdentifier = @"Cell"; 
UITableViewCell *aCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 

    if (indexPath.section ==0) 
    { 
     UITextField* textField = [[UITextField alloc] initWithFrame:CGRectMake(10, 0, 310, 44)]; 
     [textField setPlaceholder:@"Set package number here"]; 
     [textField setEnablesReturnKeyAutomatically: YES]; 

     [textField setReturnKeyType:UIReturnKeyDone]; 
     [textField addTarget:self action:@selector(dismissKeyBoard:) forControlEvents:UIControlEventEditingDidEndOnExit]; 
     [textField setKeyboardType:UIKeyboardTypeNumbersAndPunctuation]; 
     [aCell addSubview:textField]; 
    } 
     else if(indexPath.section ==1){ 
      aCell =[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier]; 
      [aCell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
      [aCell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator]; 
      aCell.textLabel.text = creationDate; 
      aCell.detailTextLabel.text = @"Choose"; 
      aCell.imageView.image = [UIImage imageNamed:@"Date.png"] ; 



    } 
    else if(indexPath.section ==2) 
    { 
      [aCell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
     aCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier]; 
     aCell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; 
     aCell.textLabel.text = self.storeName; 


     aCell.imageView.image = [UIImage imageNamed:@"Buildings2020.png"]; 

    aCell.detailTextLabel.text = @"Choose"; 

    } 
    else if(indexPath.section ==4){ 
     aCell =[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
     aCell.textLabel.text = @"Add package item"; 
     [aCell.textLabel setTextColor:[UIColor orangeColor]]; 
     aCell.imageView.image = [UIImage imageNamed:@"New.png"]; 
     [aCell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
     aCell.backgroundColor = [UIColor clearColor]; 
    } 
    else if(indexPath.section ==5){ 
     UITextView *textView = [[UITextView alloc]initWithFrame:CGRectMake(10, 0, 300, 100)]; 
     [textView setEditable:YES]; 
     [textView setFont:[UIFont fontWithName:@"Verdana" size:14]]; 
     [textView setReturnKeyType:UIReturnKeyDone]; 

     textView.delegate = self; 

     [aCell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
     [aCell addSubview:textView]; 

    } 



return aCell; 

}

点击部== 2我的应用程序正确地显示第二UITableView的后SelectStoreViewController我执行了复选标记

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
return 1; 
} 
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
return arrayOfStores.count; 
} 
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath 
*)indexPath 
{ 
static NSString *CellIdentifier = @"Cell"; 
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier ]; 
if([self.checkedIndexPath isEqual:indexPath]) 
{ 
cell.accessoryType = UITableViewCellAccessoryCheckmark; 
} 
else 
{ 
cell.accessoryType = UITableViewCellAccessoryNone; 
} 
cell.textLabel.text= [arrayOfStores objectAtIndex:indexPath.row]; 
cell.imageView.image = [UIImage imageNamed:@"Buildings2020.png"]; 
return cell; 
} 
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath 
*)indexPath 
{ 
if(self.checkedIndexPath) 
{ 
UITableViewCell* uncheckCell = [tableView 
            cellForRowAtIndexPath:self.checkedIndexPath]; 
    uncheckCell.accessoryType = UITableViewCellAccessoryNone; 
} 
if([self.checkedIndexPath isEqual:indexPath]) 
{ 
    self.checkedIndexPath = nil; 
} 
else 
{ 
    UITableViewCell* cell = [tableView cellForRowAtIndexPath:indexPath]; 
    cell.accessoryType = UITableViewCellAccessoryCheckmark; 
    self.checkedIndexPath = indexPath; 
} 
} 

在SelectStoreViewController我创建的代表与像下面的方法：

SelectStoreViewController.h

@class SelectStoreViewController; 
@protocol PassStoreNameDelegate <NSObject> 
-(void)setStoreName:(SelectStoreViewController*)controller 
didFinishEnteringStoreName:(NSString*)enteredStoreName; 
@end 
@interface SelectStoreViewController : 
UITableViewController<UITableViewDataSource,UITableViewDelegate>{ 
} 
@property (retain,nonatomic) NSIndexPath *checkedIndexPath; 
@property (strong,nonatomic) NSMutableArray *arrayOfStores ; 
@property (nonatomic,weak) id<PassStoreNameDelegate>delegate; 
@end 

SelectStoreViewController.m

- (void)viewDidLoad{ 
[super viewDidLoad]; 
arrayOfStores = [[NSMutableArray alloc]init]; 
[self fetchStoresFromDatabase]; 
self.title = @"Select store from list"; 
UIBarButtonItem *backButtonItem = [[UIBarButtonItem alloc]initWithTitle:@"Back" 
style:UIBarButtonItemStylePlain target:self 
action:@selector(didSelectBackBarButtonItem:)]; 
self.navigationItem.leftBarButtonItem = backButtonItem; 
} 
-(void)didSelectBackBarButtonItem:(id)sender{ 
[self.delegate setStoreName:self didFinishEnteringStoreName:@"store name"]; 
[self dismissViewControllerAnimated:YES completion:nil]; 
} 

之后，我实现PassStoreNameDelegate在NewPackageViewController（在我的第一个的UITableViewController） NewPackageViewController .h

interface NewPackageViewController : 
UITableViewController<UITextViewDelegate,PassStoreNameDelegate,CreationDateViewDelegate> 
{ 
SelectStoreViewController *selectStoreNameViewController; 
NSString *storeName; 
} 
@property (nonatomic, retain) SelectStoreViewController*selectStoreNameViewController; 
@property (retain,nonatomic) NSString* storeName; 
@end 

NewPackageViewController.m

-(void)setStoreName:(SelectStoreViewController *)controllerdidFinishEnteringStoreName 
(NSString *)enteredStoreName{ 
self.storeName = enteredStoreName; 
[self.tableView reloadData]; 
} 

当试图执行此任务，我用这个链接：Passing Data between View Controllers

我想创建一个类似于单选按钮的功能...... 每一个帮助将appriciated

Ragards

Answer 1

首先您应该在.h文件中创建单选按钮功能。然后在你的第一视图控制器中实现你的代码。

你想要做的唯一的事情是在.h文件中导入“secondviewController.h”

那么可以肯定你可以使用secondviewController.m无线电按钮功能文件