当表嵌套在UIView中时，reloadData不起作用

Question

我已经搜索过这个问题，但一无所获。我已经三次检查myTableView是否与表格相关联，而在调用nil时没有reloadData，并且我正在为表格提供的新数组是新的而不是{{ 1}}。

但基本上，代码似乎有效。只是我需要关闭并重新打开要更新的表的视图。否则，当我点击一个应该更新表格的按钮时，它会变为空（直到我关闭并重新打开视图 - 然后我得到正确的数据）。

·H：

nil

.M

@interface AddressbookViewController : UIViewController <UITableViewDataSource, UITableViewDelegate>
{

    IBOutlet UIButton * A;
    IBOutlet UIButton * B;
    IBOutlet UIButton * C;
    IBOutlet UIButton * D;
    IBOutlet UIButton * E;
    IBOutlet UIButton * F;
    IBOutlet UIButton * G;
    IBOutlet UIButton * H;
    IBOutlet UIButton * I;
    IBOutlet UIButton * J;
    IBOutlet UIButton * K;
    IBOutlet UIButton * L;
    IBOutlet UIButton * M;
    IBOutlet UIButton * N;
    IBOutlet UIButton * O;
    IBOutlet UIButton * P;
    IBOutlet UIButton * Q;
    IBOutlet UIButton * R;
    IBOutlet UIButton * S;
    IBOutlet UIButton * T;
    IBOutlet UIButton * U;
    IBOutlet UIButton * V;
    IBOutlet UIButton * W;
    IBOutlet UIButton * X;
    IBOutlet UIButton * Y;
    IBOutlet UIButton * Z;
    IBOutlet UIButton * vcCorp;
    IBOutlet UIButton * vcLocal;
    IBOutlet UIButton * listUp;
    IBOutlet UIButton * listDown;
    IBOutlet UIButton * close;

    IBOutlet UIView *myView;
    IBOutlet UITableView * myTableView;
    NSMutableArray *tableArray;

    CrestronClient * cClient;
    CrestronControllerValues * CCV;
    int viewOptions;

}
@property (nonatomic, retain)  NSMutableArray *tableArray;
@property (nonatomic, retain) IBOutlet UITableView *myTableView;


- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil type:(int)viewoptions;

@end

Answer 1

从我发现它似乎

[tableArray removeAllObjects];

可能是我的问题。我认为这是一个计时问题，但即使在另一个线程上添加睡眠（1）后我的问题也没有解决。

这是工作代码。注意我改变了从删除所有对象到单独删除每个对象。

#import "AddressbookViewController.h"
#import "CrestronControllerValues.h"



@implementation AddressbookViewController
@synthesize myTableView,tableArray;

//viewOptions  =    1=videoconferenceLOCAL    2=videoconferenceCORP    3=telepresence  4=audioconference
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil type:(int)viewoptions
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
        viewOptions = 1;
        viewOptions = viewoptions;
       // tableArray = [[NSMutableArray alloc]initWithObjects:nil];

    }
    return self;
}


- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Release any cached data, images, etc that aren't in use.
}

- (void)viewDidLoad
{
    [super viewDidLoad];

    CCV = [CrestronControllerValues sharedManager];
    cClient = [CrestronClient sharedManager];

    if (viewOptions == 1) {
        [vcLocal setSelected:TRUE];
        [vcCorp setSelected:FALSE];
    }else if(viewOptions == 2){
        [vcLocal setSelected:FALSE];
        [vcCorp setSelected:TRUE];
    }


    if (viewOptions>2) {
        A.hidden = true;
        B.hidden = true;
        C.hidden = true;
        D.hidden = true;
        E.hidden = true;
        F.hidden = true;
        G.hidden = true;
        H.hidden = true;
        I.hidden = true;
        J.hidden = true;
        K.hidden = true;
        L.hidden = true;
        M.hidden = true;
        N.hidden = true;
        O.hidden = true;
        P.hidden = true;
        Q.hidden = true;
        R.hidden = true;
        S.hidden = true;
        T.hidden = true;
        U.hidden = true;
        V.hidden = true;
        W.hidden = true;
        X.hidden = true;
        Y.hidden = true;
        Z.hidden = true;
        vcCorp.hidden = true;
        vcLocal.hidden = true;
        listUp.hidden = true;
        listDown.hidden = true; 

    }

    [A addTarget:self action:@selector(aPressed) 
                  forControlEvents:UIControlEventTouchUpInside];
    [B addTarget:self action:@selector(bPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [C addTarget:self action:@selector(cPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [D addTarget:self action:@selector(dPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [E addTarget:self action:@selector(ePressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [F addTarget:self action:@selector(fPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [G addTarget:self action:@selector(gPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [H addTarget:self action:@selector(hPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [I addTarget:self action:@selector(iPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [J addTarget:self action:@selector(jPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [K addTarget:self action:@selector(kPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [L addTarget:self action:@selector(lPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [M addTarget:self action:@selector(mPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [N addTarget:self action:@selector(nPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [O addTarget:self action:@selector(oPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [P addTarget:self action:@selector(pPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [Q addTarget:self action:@selector(qPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [R addTarget:self action:@selector(rPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [S addTarget:self action:@selector(sPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [T addTarget:self action:@selector(tPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [U addTarget:self action:@selector(uPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [V addTarget:self action:@selector(vPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [W addTarget:self action:@selector(wPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [X addTarget:self action:@selector(xPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [Y addTarget:self action:@selector(yPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [Z addTarget:self action:@selector(zPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [listUp addTarget:self action:@selector(listUpPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [listDown addTarget:self action:@selector(listDownPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [close addTarget:self action:@selector(closedPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [vcCorp addTarget:self action:@selector(vcCorpPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    [vcLocal addTarget:self action:@selector(vcLocalPressed) 
                forControlEvents:UIControlEventTouchUpInside];
    // Do any additional setup after loading the view from its nib.



    switch (viewOptions) {
        case 1:
            [self setTableArray:CCV.currentPhonebookEntriesVideoChat];
            break;
        case 2:
            [self setTableArray:CCV.currentPhonebookEntriesVideoChat];
            break;
        case 3:
            [self setTableArray:CCV.currentPhonebookEntriesTelepresence];
            break;
        case 4:
            [self setTableArray:CCV.currentPhonebookEntriesAudioChat];
            break;
        default:
            [self setTableArray:CCV.currentPhonebookEntriesVideoChat];
            break;
    } 

}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return YES;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{ 
        int startCounter = 0;
        switch (viewOptions) {
            case 1:
                startCounter = 308;
                break;
            case 2:
                startCounter = 308;;
                break;
            case 3:
                startCounter = 331;
                break;
            case 4:
                startCounter = 286;
                break;
            default:
                return nil;
                break;
        }
    if ([[tableArray objectAtIndex:indexPath.row]isEqualToString:@"< empty >"]) {
        NSLog(@"empty");
    }else{
        [cClient userDigitalPush:startCounter+indexPath.row];    

    }

}

#pragma mark - Table view data source

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

    return [tableArray count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }
    cell.textLabel.text = [tableArray objectAtIndex:indexPath.row];


    return cell;
}
-(void)setTableArray{
   //[tableArray removeAllObjects];

    //NSLog(@"set table array %@", CCV.currentPhonebookEntriesVideoChat);
    int counter =0;
    while ([tableArray count]>counter) {
        [tableArray removeObjectAtIndex:counter];
        counter++;
    }

    if (viewOptions == 1 || viewOptions == 2) {
        tableArray =CCV.currentPhonebookEntriesVideoChat;
    }else if(viewOptions == 3){
        tableArray =CCV.currentPhonebookEntriesTelepresence;
    }
    //[self.myTableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO];
    [[self myTableView] reloadData];
}



-(void)listUpPressed
{
    //viewOptions  =    1=videoconferenceLOCAL    2=videoconferenceCORP    3=telepresence  4=audioconference

    int startCounter = 0;
    switch (viewOptions) {
        case 1:
            startCounter = 318;
            break;
        case 2:
            startCounter = 318;;
            break;
        case 3:
            startCounter = 341;
            break;
        default:
            return nil;
            break;
    }
    [cClient userDigitalPush:startCounter];    
    [self setTableArray];
}

-(void)listDownPressed
{
    int startCounter = 0;
    switch (viewOptions) {
        case 1:
            startCounter = 318;
            break;
        case 2:
            startCounter = 318;;
            break;
        case 3:
            startCounter = 341;
            break;
        default:
            return nil;
            break;
    }
    [cClient userDigitalPush:startCounter+1];  
    NSLog(@"command sent");

    [self setTableArray];
}

-(void)closedPressed
{
    [self.view removeFromSuperview];  
}

-(void)vcCorpPressed
{
    [cClient userDigitalPush:326];    
    [vcLocal setSelected:FALSE];
    [vcCorp setSelected:TRUE];
    viewOptions = 2;
    [self setTableArray];

}

-(void)vcLocalPressed
{
    [cClient userDigitalPush:325];    
    [vcLocal setSelected:TRUE];
    [vcCorp setSelected:FALSE];
    viewOptions = 1;
    [self setTableArray];
}

这是第二次removeallobjects没有按照我的预期工作。我要重新阅读文档，但我真的不明白为什么这是问题。我正在清理数组，将其设置为一个新数组，它仍然是空的

and here is my answer