断言失败 - [UITableView dequeueReusableCellWithIdentifier：forIndexPath：] [英] Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:]
问题描述
由于某些原因，我的应用程序在尝试将单元格加载到tableview时失败。我在整个应用程序中的所有表格视图完全相同，我对它们没有任何问题。是否可能与从另一个viewController初始化Controller有关？我不这么认为。故事板中的我的单元格已被赋予标识符。这是一个屏幕截图的链接。
For some reason my app is failing when trying to load up the cells into the tableview. All of my tableviews throughout the app are exactly the same and i have no issues with them. Could it possible have to do with initializing the Controller from another viewController? I wouldn't think so. My cell in the storyboard has been given the identifier. Here is a link to a screen shot.
所以我已经尝试了所有的东西这里并没有任何效果。
So i have tried everything here and nothing has worked.
这是使用[tableView dequeueReusableCellWithIdentifier：CellIdentifier forIndexPath：indexPath]方法输出：
Here is the output using the [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath] method:
2013-11-14 15:36:33.419 ComplyOS[43683:70b] *** Assertion failure in -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:], /SourceCache/UIKit_Sim/UIKit-2903.23/UITableView.m:5261
2013-11-14 15:36:33.424 ComplyOS[43683:70b] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'unable to dequeue a cell with identifier ProcedureCell - must register a nib or a class for the identifier or connect a prototype cell in a storyboard'
*** First throw call stack:
(
0 CoreFoundation 0x0000000101fa9795 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000101d0c991 objc_exception_throw + 43
2 CoreFoundation 0x0000000101fa961a +[NSException raise:format:arguments:] + 106
3 Foundation 0x00000001018a99e9 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 189
4 UIKit 0x00000001008f9879 -[UITableView dequeueReusableCellWithIdentifier:forIndexPath:] + 150
5 ComplyOS 0x00000001000099b4 -[EndoPxTableViewController tableView:cellForRowAtIndexPath:] + 116
6 UIKit 0x0000000100902b8a -[UITableView _createPreparedCellForGlobalRow:withIndexPath:] + 348
7 UIKit 0x00000001008ea836 -[UITableView _updateVisibleCellsNow:] + 2297
8 UIKit 0x00000001008fb381 -[UITableView layoutSubviews] + 207
9 UIKit 0x0000000100892b27 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 354
10 QuartzCore 0x00000001005afa22 -[CALayer layoutSublayers] + 151
11 QuartzCore 0x00000001005a4589 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 363
12 QuartzCore 0x00000001005a440a _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 24
13 QuartzCore 0x0000000100519694 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 252
14 QuartzCore 0x000000010051a70c _ZN2CA11Transaction6commitEv + 394
15 QuartzCore 0x000000010051ad79 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 89
16 CoreFoundation 0x0000000101f74ff7 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
17 CoreFoundation 0x0000000101f74f67 __CFRunLoopDoObservers + 391
18 CoreFoundation 0x0000000101f546d2 __CFRunLoopRun + 946
19 CoreFoundation 0x0000000101f53f33 CFRunLoopRunSpecific + 467
20 GraphicsServices 0x0000000103c2b3a0 GSEventRunModal + 161
21 UIKit 0x0000000100837043 UIApplicationMain + 1010
22 Comply 0x0000000100002703 main + 115
23 libdyld.dylib 0x00000001029ed5fd start + 1
24 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
这是我的UITableView控制器的代码：
And here is my code for the UITableView Controller:
#import "EndoPxTableViewController.h"
#import <AFHTTPRequestOperationManager.h>
#import "ProcedureTableViewCell.h"
@interface EndoPxTableViewController (){}
@property (nonatomic, strong)NSArray *procedures;
@end
@implementation EndoPxTableViewController
- (void)setVisitItem:(Patient_VisitsModel *)visitItem{
if(_visitItem !=visitItem){
_visitItem = visitItem;
}
}
-(void)setUserId:(NSString *)userId{
if(_userId !=userId){
_userId = userId;
}
[self fetchProceduresData];
}
- (void) fetchProceduresData{
NSString *procedureURLString =[NSString stringWithFormat:@"https://XXXX";
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:procedureURLString parameters:nil success:^(AFHTTPRequestOperation *operation, id json) {
_procedures = json;
[self.tableView reloadData];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error occured in getSessionID method");
NSLog(@"Error: %@", error);
}];
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = @"Endoscopy Report";
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSLog(@"Procedures:%@", [_procedures valueForKey:@"description"]);
return _procedures.count;
}
- (ProcedureTableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"ProcedureCell";
ProcedureTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
NSString *procedureDescription = [_procedures[indexPath.row] valueForKey:@"description"];
NSLog(@"Procedure Description:%@", procedureDescription);
cell.procedureLabel.text = procedureDescription;
cell.questionImage.image = nil;
return cell;
}
#pragma mark - Navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
}
@end
感谢大家的帮助。我有点绝望了。
Thanks for everyones help. I am getting a little desperate.
推荐答案
我的不好！似乎你正在使用 dequeueReusableCellWithIdentifier：forIndexPath：出列单元格的方法。请尝试 dequeueReusableCellWithIdentifier：，它应该可以工作。
My bad! It seems to be you are using dequeueReusableCellWithIdentifier:forIndexPath: method for dequeueing cell. Please try dequeueReusableCellWithIdentifier: instead and it should work.
dequeueReusableCellWithIdentifier：forIndexPath：需要一个nib文件或一个注册类来出列单元格，但是你正在使用storyboard prototype cell。并且 dequeueReusableCellWithIdentifier：保证在使用正确的标识符时从故事板返回一个单元格。
dequeueReusableCellWithIdentifier:forIndexPath: expects a nib file or a registered class for dequeueing cells but you are using storyboard prototype cell. And dequeueReusableCellWithIdentifier: is guaranteed to return a cell from storyboard if you use correct identifier.
希望它有所帮助。
这篇关于断言失败 - [UITableView dequeueReusableCellWithIdentifier：forIndexPath：]的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
