断言失败 - [UITableView _endCellAnimationsWithContext]

Question

我正在解析一个xml文件并将其解析的值放在一个表视图中.表视图只有一个部分.但我得到以下异常:

2013-10-14 15:21:57.250 tableview [6068:907] *断言失败 - [UITableView _endCellAnimationsWithContext:],/ SourceCache/UIKit/UIKit-2380.17/UITableView.m:909 2013-10-14 15:22: 11.227 tableview [6068:907]由于未捕获异常'NSInternalInconsistencyException'而终止应用程序,原因:'尝试将第0行插入第0部分,但更新后第0部分只有0行'**第一次抛出调用堆栈:(0x33e752a3 0x3bcde97f 0x33e7515d 0x3474aab7 0x35cb0a9f 0x35de6b27 0x6a10f 0x69ce5 0x33dc6037 0x346dc599 0x6b54b 0x3478c0f5 0x33e4a683 0x33e49ee9 0x33e48cb7 0x33dbbebd 0x33dbbd49 0x379702eb 0x35cd1301 0x68bdd 0x68b64)libc ++ abi.dylib:终止调用抛出异常

代码是:

/**
 The NSOperation "ParseOperation" calls addFiles: via NSNotification, on the main thread which in turn calls this method, with batches of parsed objects. The batch size is set via the kSizeOfEarthquakeBatch constant.
 */
- (void)addFilesToList:(NSArray *)files {

    NSInteger startingRow = [self.fileList count];
    NSLog(@"STARTING ROW:%d",startingRow);
    NSInteger fileCount = [files count];
    NSLog(@"FILE COUNT : %d",fileCount);
    NSMutableArray *indexPaths = [[NSMutableArray alloc] initWithCapacity:fileCount];
    NSLog(@"INDEX PATHS:%@",indexPaths);
    for (NSInteger row = startingRow; row < (startingRow + fileCount); row++) {
        NSLog(@"into for");

        NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row inSection:0];
        NSLog(@"INDEXPAth %@",indexPath);
        [indexPaths addObject:indexPath];
    }

    [self.fileList addObjectsFromArray:files];
    NSLog(@"ADD objects");
    NSLog(@"FILELIST:%@",self.fileList);

    //GETTING EXCEPTION AT THIS LINE

    [self.tableview insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationAutomatic]; 
}


#pragma mark - UITableViewDelegate\

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

// The number of rows is equal to the number of earthquakes in the array.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    return [self.fileList count];
    NSLog(@"NUMBER OF ROWS :%d",[self.fileList count]);
}

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

    static NSString *kFileCellID = @"Cell";
    myTableCell *cell = (myTableCell *)[tableView dequeueReusableCellWithIdentifier:kFileCellID];

    // Get the specific earthquake for this row.
    fileList *file = (self.fileList)[indexPath.row];

    [cell configureWithFile:file];
    return cell;
}

Answer 1

发生的事情是,您正在添加新单元格的表视图仍然不知道对self.fileList数组所做的更改.不幸的是,UIKit将添加新单元格并检查部分计数的顺序是您无法控制的.但是为了解决这个问题,UItableview的插入和删除操作需要包含在startsUpdate和endsUpdate方法调用上.

[self.tableView beginUpdates];

// Do all the insertRowAtIndexPath and all the changes to the data source array

[self.tableView endUpdates];

Answer 2

就我而言，问题是我使用了两个indexPath（indexPath，lastIndexPath）。但对于lastIndexPath.row已经超出了我的数组范围。通过检查条件来解决。希望这对某人有帮助。

[self.tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath, lastIndexPath, nil] withRowAnimation:UITableViewRowAnimationAutomatic];