删除行时 Tableview 崩溃?
我从表格视图中删除单元格时发生崩溃。我正在使用从 NSUserDefaults
加载的 NSMutableArray
将单元格加载到表格视图中。 这是崩溃的情况: 代码:
2011-09-03 18:21:06.097 App[10356:707] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit/UIKit-1906/UITableView.m:1046
2011-09-03 18:21:06.100 App[10356:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (3) must be equal to the number of rows contained in that section before the update (3), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'
这就是我删除行的方法... 代码:
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
[self.cellArray objectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath] withRowAnimation:YES];
[[NSUserDefaults standardUserDefaults] setObject:cellArray forKey:@"cellArray"];
}
这是我的 numberOfRowsInSection
委托方法: 代码: // 自定义表视图中的行数。
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
self.cellArray = [NSMutableArray array];
[self.cellArray addObjectsFromArray:[[NSUserDefaults standardUserDefaults] objectForKey:@"cellArray"]];
if ([self.cellArray count] == 0) {
[ivstatstableView setHidden:YES];
[sortbar setEnabled:NO];
}
return [cellArray count];
}
知道这里出了什么问题吗?
I am having a crash with deleting a cell from a tableview. I am using a NSMutableArray
loaded from NSUserDefaults
to load the cells into the tableview.
This is the crash:
Code:
2011-09-03 18:21:06.097 App[10356:707] *** Assertion failure in -[UITableView _endCellAnimationsWithContext:], /SourceCache/UIKit/UIKit-1906/UITableView.m:1046
2011-09-03 18:21:06.100 App[10356:707] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (3) must be equal to the number of rows contained in that section before the update (3), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).'
This is how I delete the rows...
Code:
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {
[self.cellArray objectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:[NSMutableArray arrayWithObject:indexPath] withRowAnimation:YES];
[[NSUserDefaults standardUserDefaults] setObject:cellArray forKey:@"cellArray"];
}
This is my numberOfRowsInSection
delegate method:
Code:
// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
self.cellArray = [NSMutableArray array];
[self.cellArray addObjectsFromArray:[[NSUserDefaults standardUserDefaults] objectForKey:@"cellArray"]];
if ([self.cellArray count] == 0) {
[ivstatstableView setHidden:YES];
[sortbar setEnabled:NO];
}
return [cellArray count];
}
Any idea what is wrong here?
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从数组中删除对象后,您需要调用
reloadData
。当您调用reloadData
方法时,您的新数组将被更新,这让您的UITableView
根据新更新的数据加载新单元格。You need to call
reloadData
after removing an object from your array. When you callreloadData
method, your new array is updated which lets yourUITableView
load new cells based on the new updated data.