【发布时间】：2011-10-14 19:52:04
【问题描述】：
我已经搜索过这个问题，但一无所获。在调用reloadData 时，我已经三次检查myTableView 是否链接到表格而不是nil，并且我提供给表格的新数组是新的而不是nil。
但基本上，代码似乎可以工作。只是我需要关闭并重新打开要更新的表的视图。否则，当我单击应该更新表格的按钮时，它会将其变为空（直到我关闭并重新打开视图——然后我得到正确的数据）。
.H:
@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
.M
#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];
[vcLocal setSelected:TRUE];
[vcCorp setSelected:FALSE];
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;
//[myTableView setEditing:YES animated:YES];
//[myTableView reloadData];
}
[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");
}
[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:(NSMutableArray *)tablearray{
[tableArray removeAllObjects];
tableArray = tablearray;
NSLog(@"testing %@",tableArray);
//[myTableView performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO];
[self viewWillAppear:YES];
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[[self myTableView] reloadData];
}
-(void)aPressed
{
// CCV = [CrestronControllerValues sharedManager];
//
// NSLog(@"test %@", CCV.cameleonVersion);
// NSLog(@"test %@", CCV.ipAddress);
// NSLog(@"test %@", CCV.iPID);
}
-(void)bPressed
{
}
-(void)cPressed
{
}
-(void)dPressed
{
}
-(void)ePressed
{
}
-(void)fPressed
{
}
-(void)gPressed
{
}
-(void)hPressed
{
}
-(void)iPressed
{
}
-(void)jPressed
{
}
-(void)kPressed
{
}
-(void)lPressed
{
}
-(void)mPressed
{
}
-(void)nPressed
{
}
-(void)oPressed
{
}
-(void)pPressed
{
}
-(void)qPressed
{
}
-(void)rPressed
{
}
-(void)sPressed
{
}
-(void)tPressed
{
}
-(void)uPressed
{
}
-(void)vPressed
{
}
-(void)wPressed
{
}
-(void)xPressed
{
}
-(void)yPressed
{
}
-(void)zPressed
{
}
-(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;
case 4:
startCounter = 0;
break;
default:
return nil;
break;
}
[cClient userDigitalPush:startCounter];
if (viewOptions == 1 || viewOptions == 2) {
[self setTableArray:CCV.currentPhonebookEntriesVideoChat];
}else if(viewOptions == 3){
[self setTableArray:CCV.currentPhonebookEntriesTelepresence];
}else if(viewOptions == 4){
[self setTableArray:CCV.currentPhonebookEntriesAudioChat];
}
}
-(void)listDownPressed
{
int startCounter = 0;
switch (viewOptions) {
case 1:
startCounter = 318;
break;
case 2:
startCounter = 318;;
break;
case 3:
startCounter = 341;
break;
case 4:
startCounter = 0;
break;
default:
return nil;
break;
}
[cClient userDigitalPush:startCounter+1];
if (viewOptions == 1 || viewOptions == 2) {
[self setTableArray:CCV.currentPhonebookEntriesVideoChat];
}else if(viewOptions == 3){
[self setTableArray:CCV.currentPhonebookEntriesTelepresence];
}else if(viewOptions == 4){
[self setTableArray:CCV.currentPhonebookEntriesAudioChat];
}
}
-(void)closedPressed
{
[self.view removeFromSuperview];
}
-(void)vcCorpPressed
{
[cClient userDigitalPush:326];
[vcLocal setSelected:FALSE];
[vcCorp setSelected:TRUE];
[self setTableArray:CCV.currentPhonebookEntriesVideoChat];
}
-(void)vcLocalPressed
{
[cClient userDigitalPush:325];
[vcLocal setSelected:TRUE];
[vcCorp setSelected:FALSE];
[self setTableArray:CCV.currentPhonebookEntriesVideoChat];
}
- (void)dealloc
{
[myTableView release];
[tableArray release];
[cClient release];
[super dealloc];
}
@end
【问题讨论】：
-
我感觉部分问题是这个类是 UIViewController 的子类，而不是 UITableViewController，但它应该仍然是可能的
-
你在设置表的委托和数据源吗？
-
是的。就像我说我的表可以很好地加载数据（如果没有设置，我不会发生这种情况）它只是当 tableArray 更改并且发送了 reloaddata 命令时，tableview 变为空白，我需要关闭并重新打开它以获取我的表新数组
-
我没有在你发布的代码中看到你这样做的地方。
-
?不明白你的意思。在 .h 我有 UIViewController
并且链接在 IB 中完成
标签： objective-c ios cocoa-touch uitableview