[英]Data from Plist is Incorrectly Ordered in UITableView
I have data that is stored in a plist but when I pull it to my UITableView it gets reordered for some reason. 我有存储在plist中的数据,但是当我将其拉到UITableView时,由于某种原因它会重新排序。 Here are my table view data source methods:
这是我的表视图数据源方法:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [self.lunch_Dinner count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
return [[self.lunch_Dinner allKeys] objectAtIndex:section];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSString *typeOfEntree = [self tableView:tableView titleForHeaderInSection:section];
return [[self.lunch_Dinner valueForKey:typeOfEntree] count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"EntreeCell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
// Configure the cell...
NSString *typeOfEntree = [self tableView:tableView titleForHeaderInSection:indexPath.section];
NSString *entree = [[self.lunch_Dinner valueForKey:typeOfEntree] objectAtIndex:indexPath.row];
cell.textLabel.text = entree;
return cell;
}
Here is the order of the plist: 这是plist的顺序:
And this is the resulting order in the UITableView after being compiled: 这是编译后的UITableView中的结果顺序:
Any help would be great! 任何帮助将是巨大的! Thanks in advance.
提前致谢。
If you want to store table in plist it is better to consider the following structure: 如果要将表存储在plist中,最好考虑以下结构:
NSArray *sections = [NSArray arrayWithObjects:
[NSDictionary dictionaryWithObject:
[NSArray arrayWithObjects:row_1, row_2, ... , nil]
forKey:@"section name 1"],
[NSDictionary dictionaryWithObject:
[NSArray arrayWithObjects:row_1, row_2, ... , nil]
forKey:@"section name 2"],
...
[NSDictionary dictionaryWithObject:
[NSArray arrayWithObjects:row_1, row_2, ... , nil]
forKey:@"section name N"],
nil];
This code representation is easy to reproduce as plist. 此代码表示形式易于复制为plist。 Create it as in example below
如下所示创建它
This structure can be easily used as UITableView datasource 此结构可以轻松用作UITableView数据源
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return [self.datasource count];
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
NSDictionary *dict = [self.datasource objectAtIndex:section];
return [dict.allKeys lastObject];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSDictionary *dict = [self.datasource objectAtIndex:section];
return [dict.allValues.lastObject count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *dict = [self.datasource objectAtIndex:indexPath.section];
id cellPresenter = [dict.allValues.lastObject objectAtIndex:indexPath.row];
...
}
It looks like lunch_Dinner
is a NSDictionary
. 看起来
lunch_Dinner
是NSDictionary
。 NSDictionary
s are unordered, so you are not guaranteed a specific output order from them. NSDictionary
是无序的,因此不能保证它们有特定的输出顺序。
It is a little hard to see exactly what value you're getting from having a key/value pair here, but one option would be to keep a separate NSArray
with the correct ordering, and use that to correctly populate things. 很难确切地知道从这里拥有键/值对所获得的价值,但是一个选择是保持具有正确顺序的单独
NSArray
,并使用它正确地填充事物。
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