的tableview reloaddata工作不從另一個視圖控制器

Question

我遇到的tableview的一個怪異的行爲稱爲嵌入式時功能，我在大樓裏添加點擊後的應用程序將提供一個模式視圖控制器是UATitledModalPanel的一個子類，我只是提供一些文本字段以插入來自用戶的信息。當他們點擊提交的數據將被髮送到mainviewcontroller的功能，將數據保存到數據庫，並嘗試重新加載，我做編程的實現代碼如下。但是在上面這個過程中，tableview不會被重新加載。但是如果在視圖控制器中執行同樣的過程，它可以正確執行此操作。以下是我的視圖控制器的代碼。

ViewController.h

@interface ViewController :  UIViewController<UAModalPanelDelegate,UITextFieldDelegate,UITextViewDelegate,UITableViewData Source,UITableViewDelegate>{ 
DataClass *dataOfValue; 
} 
@property(strong,nonatomic)UITableView *table; 
-(void)reloadDatas; 
-(void)insertData:(NSString *)gettingData; 

ViewController.m

@interface ViewController(){ 
NSMutableArray *data; 
DataClass *dataclass; 
} 

@end 

@implementation ViewController 
@synthesize table; 
static NSString *CellIdentifier = @"CellIdentifier"; 

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 
table = [[UITableView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, self.view.frame.size.width, self.view.frame.size.height-64.0f) style:UITableViewStylePlain]; 
[self.view addSubview:table]; 
[table registerClass:[CustomCell class] forCellReuseIdentifier:CellIdentifier]; 
self.navigationItem.title = @"Scheduler"; 
self.table.delegate = self; 
self.table.dataSource = self; 
//self.navigationItem.leftBarButtonItem = self.editButtonItem; 
UIImageView *infoimg = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"detail.png"]]; 
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:infoimg]; 

UITapGestureRecognizer *infotap = [[UITapGestureRecognizer alloc] 
           initWithTarget:self 
           action:@selector(addAction:)]; 
[infotap setAccessibilityLabel:@"infotap"]; 
infotap.numberOfTapsRequired = 1; 

[infoimg addGestureRecognizer:infotap]; 

UIImageView *img = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"add.png"]]; 
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:img]; 

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] 
           initWithTarget:self 
           action:@selector(addAction:)]; 
[tap setAccessibilityLabel:@"tap"]; 
tap.numberOfTapsRequired = 1; 

[img addGestureRecognizer:tap]; 

table.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"table_background.jpg"]]; 

//UIImage *img = [[UIImage alloc] i] 
table.separatorColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"navigation_bar.jpg"]]; 

[self openDataBase]; 

}

- (void)openDataBase{ 
data = [NSMutableArray new]; 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *docsPath = [paths objectAtIndex:0]; 
NSString *path = [docsPath stringByAppendingPathComponent:@"callsmsDB.sqlite"]; 
FMDatabase *database = [FMDatabase databaseWithPath:path]; 
[database open]; 
FMResultSet *res = [database executeQuery:@"SELECT * FROM data"]; 
int i = 0; 
while ([res next]) { 
    i++; 
    //NSLog(@"%@",[res stringForColumn:@"status"]); 
    dataclass = [[DataClass alloc] init]; 
    dataclass.identifier = [NSNumber numberWithInt:[res intForColumn:@"id"]]; 
    dataclass.number = [res stringForColumn:@"number"]; 
    dataclass.date = [res stringForColumn:@"date"]; 
    dataclass.type = [res stringForColumn:@"type"]; 
    dataclass.description = [res stringForColumn:@"description"]; 
    dataclass.status = [res stringForColumn:@"status"]; 
    [data addObject:dataclass]; 

} 
NSLog(@"The size of the array is %d",[data count]); 
NSLog(@"The value of is %d",i); 
[self.table performSelectorOnMainThread:@selector(reloadData) withObject:self.table waitUntilDone:YES]; 

[database close]; 

}

- (void)addAction:(id)sender{ 
UIGestureRecognizer *infotag = (UIGestureRecognizer *) sender; 
NSString *info = infotag.accessibilityLabel; 
if([info isEqualToString:@"infotap"]){ 
    //NSLog(@"About app"); 
    //[self performSegueWithIdentifier:@"appinfo" sender:self]; 
    /*AboutApp *nextController = [[self storyboard] instantiateViewControllerWithIdentifier:@"aboutapp"]; 
    [UIView beginAnimations:@"animation" context:nil]; 
    [self.navigationController pushViewController: nextController animated:NO]; 
    [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromLeft forView:self.navigationController.view cache:NO]; 
    [UIView commitAnimations];*/ 
    [self performSelectorOnMainThread:@selector(openDataBase) withObject:self waitUntilDone:YES]; 

    }else{ 
    [self showModalPanel:sender]; 

    } 
    } 

    -(void)showModalPanel:(id)sender{ 

UAExampleModalPanel *modalPanel = [[UAExampleModalPanel alloc] initWithFrame:self.view.frame title:@"Schedule a Task"] ; 

    int blocksDelegateOrNone = arc4random() % 3; 

if (0 == blocksDelegateOrNone) { 
    // The block is responsible for closing the panel, 
    // either with -[UAModalPanel hide] or -[UAModalPanel hideWithOnComplete:] 
    // Panel is a reference to the modalPanel 
    modalPanel.onClosePressed = ^(UAModalPanel* panel) { 
     // [panel hide]; 
     [panel hideWithOnComplete:^(BOOL finished) { 
      [panel removeFromSuperview]; 
     }]; 
     UADebugLog(@"onClosePressed block called from panel: %@", modalPanel); 
    }; 

    // Panel is a reference to the modalPanel 
    modalPanel.onActionPressed = ^(UAModalPanel* panel) { 
     UADebugLog(@"onActionPressed block called from panel: %@", modalPanel); 
    }; 

    UADebugLog(@"UAModalView will display using blocks: %@", modalPanel); 

    // USE DELEGATE 
     } else if (1 == blocksDelegateOrNone) { 
    // Add self as the delegate so we know how to close the panel 
    modalPanel.delegate = self; 

    UADebugLog(@"UAModalView will display using delegate methods: %@", modalPanel); 

    // USE NOTHING 
     } else { 
    // no-op. No delegate or blocks 
    UADebugLog(@"UAModalView will display without blocks or delegate methods: %@", modalPanel); 
} 

// Add the panel to our view 
[self.view addSubview:modalPanel]; 

// Show the panel from the center of the button that was pressed 
[modalPanel showFromPoint:self.view.bounds.origin]; 
    } 
    -(void)insertData:(NSString *)gettingData{ 
//NSLog(@"data is %@",gettingData); 
    NSString *number; 
    NSString *date; 
    NSString *type; 
    NSString *description; 
    NSString *status; 
    NSArray *myString = [gettingData componentsSeparatedByString:@"@@"]; 
//NSLog(@"%@",myString); 
number = [myString objectAtIndex:0]; 
date = [myString objectAtIndex:1]; 
type = [myString objectAtIndex:2]; 
description = [myString objectAtIndex:3]; 
status = @"active"; 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *docsPath = [paths objectAtIndex:0]; 
NSString *path = [docsPath stringByAppendingPathComponent:@"callsmsDB.sqlite"]; 
FMDatabase *database = [FMDatabase databaseWithPath:path]; 
[database open]; 
BOOL b = [database executeUpdate:@"INSERT INTO data(number,date,type,description,status) VALUES (?,?,?,?,?)",number, date, type, description,status]; 
    if(b) 
    NSLog(@"Successfully inserted."); 
    int i = [database lastInsertRowId]; 
    NSLog(@"last inserted id is %i",i); 
    [database close]; 
    [self openDataBase]; 


    } 

    - (void)didReceiveMemoryWarning 
{ 
[super didReceiveMemoryWarning]; 
// Dispose of any resources that can be recreated. 
} 

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 
NSLog(@"The value of count of data is %d",[data count]); 
UIImage *typeImage; 
CustomCell *cell; 
if(cell == nil) 
    cell = (CustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
// Configure Cell 
DataClass *recent = [data objectAtIndex:indexPath.row]; 
//NSLog(@"jjj %@",recent.description); 
if ([recent.type isEqualToString:@"call"]) { 
    typeImage = [UIImage imageNamed:@"call.png"]; 
}else{ 
    typeImage = [UIImage imageNamed:@"sms.png"]; 
} 
[cell.mylabel setText:recent.number]; 
[cell.corsms setImage:typeImage forState:UIControlStateNormal]; 
UIImage *delImage = [UIImage imageNamed:@"delete.png"]; 
[cell.detail setImage:delImage forState:UIControlStateNormal]; 
cell.selectionStyle = UITableViewCellSelectionStyleNone; 
if([recent.status isEqualToString:@"Active"]){ 
    [cell.myswitch setOn:YES]; 
}else{ 
    [cell.myswitch setOn:NO]; 
} 
[cell.myswitch addTarget:self action:@selector(changeSwitch:) forControlEvents:UIControlEventValueChanged]; 
return cell; 

}

- (void)changeSwitch:(id)sender{ 

NSString *status; 
RCSwitchOnOff *sw = (RCSwitchOnOff *)sender; 
CustomCell *custcell = (CustomCell *)sw.superview.superview; 
UITableView *tableview = (UITableView *)custcell.superview; 
NSInteger rowOfTheCell = [[tableview indexPathForCell:custcell] row]; 
//NSLog(@"%i",rowOfTheCell); 
if([sw isOn]){ 
    status = @"Active"; 
}else{ 
    status = @"Inactive"; 
} 
NSLog(@"%@",status); 
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
NSString *docsPath = [paths objectAtIndex:0]; 
NSString *path = [docsPath stringByAppendingPathComponent:@"callsmsDB.sqlite"]; 
FMDatabase *database = [FMDatabase databaseWithPath:path]; 
[database open]; 
[database executeUpdate:@"UPDATE data SET status = ? WHERE id = ?",status,[[data objectAtIndex:rowOfTheCell] identifier]]; 
[database close]; 

} 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section   { 
NSLog(@"Number of rows in section = %d",[data count]); 
return [data count]; 
} 

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath { 
return YES; 
} 

在ModalViewController 創建視圖控制器的一個實例，並調用insertData但它不重新加載表。

但是，如果我附上一個欄按鈕，我的導航欄，並調用表重新加載它的工作。

請幫我一把。我不想刷新按鈕來重新加載表格。

Answer 1

你不應該創建一個ModalViewController的視圖控制器實例。這是不對的。相反，你可以創建一個協議，委託通知。 您可以從下面的鏈接中獲得更多詳情。

http://www.tutorialspoint.com/ios/ios_delegates.htm