我正在插入NSMutableArray(self.tablePdfListArray)在tableview textlabel和 NSMutableArray(self.dateListArray)在detailtextlabel在相同的索引处。它首先被正确添加，但是当我打开 TableView 时再次detailTextlabel成为textlabel和 textlabel正在成为detailTextlabel .
我有NSLog两者都是NSMutabelArray并知道两个数组值都在交换。如何保留其原有的值(value)？预先感谢您的任何建议。
使用tableView代码编辑
- (void)viewDidLoad
{
if([[NSUserDefaults standardUserDefaults] objectForKey:@"children"] != nil )
{
self.tablePdfListArray = [NSMutableArray arrayWithArray:[[NSUserDefaults standardUserDefaults] objectForKey:@"children"]];
}
if ([[NSUserDefaults standardUserDefaults] objectForKey:@"dates"] != nil)
{
self.dateListArray = [NSMutableArray arrayWithArray:[[NSUserDefaults standardUserDefaults] objectForKey:@"dates"]];
}
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
if (buttonIndex == 0)
{
self.myPDFName = [NSString stringWithFormat:@"%@", [alertView textFieldAtIndex:0].text];
firstDayInYear = [NSDate date];
dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
[dateFormatter setDateStyle:NSDateFormatterMediumStyle];
NSString *currentTime = [dateFormatter stringFromDate:firstDayInYear];
NSLog(@"User's current time in their preference format:%@",currentTime);
if(!self. tablePdfListArray)
{
self.tablePdfListArray = [[NSMutableArray alloc]init];
}
if(!self.dateListArray)
{
self.dateListArray = [[NSMutableArray alloc]init];
}
[self.dateListArray insertObject:currentTime atIndex:0];
NSLog(@"mhy date dateListArray %@",dateListArray);
//the below if condition will not allow repeatative string array in tableList and textfield lenth.
if ([[alertView textFieldAtIndex:0].text length] != 0 && ![self.tablePdfListArray containsObject:self.myPDFName])
{
[self.tablePdfListArray insertObject:[NSString stringWithFormat:@"%@", [alertView textFieldAtIndex:0].text] atIndex:0];
NSLog(@"mhy date tablePdfListArray %@",tablePdfListArray);
NSIndexPath * indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.pdfListnameTable insertRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
NSUserDefaults *defaults=[NSUserDefaults standardUserDefaults];
[defaults setObject:self.dateListArray forKey:[NSString stringWithFormat:@"children"]];
[defaults setObject:self.tablePdfListArray forKey:[NSString stringWithFormat:@"dates"]];
[defaults synchronize];
}
}}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
if( tableView == pdfListnameTable)
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
cell.selectionStyle = UITableViewCellSelectionStyleNone; //cell bg
//self.myChklist.backgroundColor = [UIColor clearColor];
}
NSString *tablePdfname = [self.tablePdfListArray objectAtIndex:indexPath.row];
cell.textLabel.text = tablePdfname;
NSString *tablePdfdate = [self.dateListArray objectAtIndex:indexPath.row];
//[dateFormatter setTimeStyle:NSDateFormatterMediumStyle];
cell.detailTextLabel.text = tablePdfdate;
return cell;
}
}
最佳答案
为什么要检查tableView == pdfListnameTable？
那应该是tableView isEqual:self。 pdfListnameTable。不确定这是否与这里相关，但如果您有多个 tableView - 我猜您不会切换到它，因为似乎缺少一个 else 语句。
关于ios - 两个 nsmutablearray 值在 ios 中与另一个值交换，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/17206936/