错误讯息 -
无效更新：第2节中的行数无效。更新后的现有部分中包含的行数（8）必须等于更新前该部分中包含的行数（8），或者减去从该部分插入或删除的行数（插入1个，删除0个），加上或减去移入或移出该部分的行数（0移入，0移出）。'
尝试在特定部分和行中点击时添加自定义UITableViewCell。类型是我在cellForRowAtIndexPath中定义的枚举 -
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
BucketListCellType type = [[[self.presentedCells objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] intValue];
if (type == mainPhotoCellWithAddToBucketList) {
BucketListShellTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
cell.backgroundColor = [UIColor clearColor];
return cell;
}
else if (type == mainPhotoCell) {
BucketListShellTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];
cell.backgroundColor = [UIColor clearColor];
return cell;
}
else if (type == CreateNewBucketListCell) {
CreateNewBucketListTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Create" forIndexPath:indexPath];
// self.collectionView.alpha = 0;
return cell;
}
else if (type == CategoryCell) {
BucketListCategoryTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Category" forIndexPath:indexPath];
BucketListCategory *category = [self.bucketListCategories objectAtIndex:indexPath.row - 1];
cell.bucketListNameLabel.text = category.name;
return cell;
}
else if (type == CategoryPhotosCell) {
BucketListCategoryPhotosTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CategoryPhotos"];
return cell;
}
return nil
}
以下是点击单元格时的代码 -
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
BucketListCellType type = [[[self.presentedCells objectAtIndex:indexPath.section] objectAtIndex:indexPath.row] intValue];
if (type == CreateNewBucketListCell) {
UIAlertController * alert= [UIAlertController
alertControllerWithTitle:@"New Bucket List"
message:@"Create a new Bucket List"
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction* ok = [UIAlertAction actionWithTitle:@"OK" style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action) {
//Do Some action here
[APIManager createBucketListCategory:alert.textFields.firstObject.text completionHandler:^(RequestStatus status) {
}];
}];
UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"Cancel" style:UIAlertActionStyleDefault
handler:^(UIAlertAction * action) {
[alert dismissViewControllerAnimated:YES completion:nil];
}];
[alert addAction:ok];
[alert addAction:cancel];
[alert addTextFieldWithConfigurationHandler:^(UITextField *textField) {
textField.placeholder = @"I want to..";
}];
[self presentViewController:alert animated:YES completion:nil];
}
else if (type == CategoryCell) {
[self expandCategoryCell];
}
}
这是下一个方法
-(void)expandCategoryCell {
NSMutableArray *preCells = [NSMutableArray new];
// First Section - Suggested Bucket List Images
NSMutableArray *suggestedBucketListImages = [NSMutableArray new];
[suggestedBucketListImages addObject:@(mainPhotoCellWithAddToBucketList)];
[suggestedBucketListImages addObject:@(mainPhotoCellWithAddToBucketList)];
[preCells addObject:[NSArray arrayWithArray:suggestedBucketListImages]];
// Second Section - Top Bucket List Images
NSMutableArray *topBucketListImages = [NSMutableArray new];
[topBucketListImages addObject:@(mainPhotoCell)];
[preCells addObject:[NSArray arrayWithArray:topBucketListImages]];
// Third Section - My Bucket List Images
NSMutableArray *myBucketListCategories = [NSMutableArray new];
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
[myBucketListCategories addObject:@(CreateNewBucketListCell)];
for (int i = 0; i < [self.bucketListCategories count]; i++) {
[myBucketListCategories addObject:@(CategoryCell)];
if (i == indexPath.row) {
[myBucketListCategories addObject:@(CategoryPhotosCell)];
}
}
[preCells addObject:[NSArray arrayWithArray:myBucketListCategories]];
NSMutableArray *unorganizedBucketListImages = [NSMutableArray new];
[unorganizedBucketListImages addObject:@(mainPhotoCell)];
[preCells addObject:[NSArray arrayWithArray:unorganizedBucketListImages]];
[self.tableView beginUpdates];
self.presentedCells = preCells;
NSArray *indexPaths = @[[NSIndexPath indexPathForRow:(indexPath.row + 1) inSection:indexPath.section]];
[self.tableView insertRowsAtIndexPaths:indexPaths withRowAnimation:UITableViewRowAnimationFade];
[self.tableView endUpdates];
}
我没有收到任何错误消息。它只是停止在[self.tableView endUpdates]工作。有想法该怎么解决这个吗？谢谢。