对于这个问题,我看过几个例子,但在我的情况下,有一个主要区别。我有一个类LTModel
,它是另一个名为LTChallenge
的类的容器:
以下是LTModel
:
#import <Foundation/Foundation.h>
#import "LTChallenge.h"
@interface LTModel : NSObject
@property NSMutableArray *challenges;
-(int) numberOfChallenges;
-(void) addChallenge:(NSString *) challengeName;
-(LTChallenge*) challengeAtIndex:(NSInteger) index;
@end
以下是LTChallenge
:
@interface LTChallenge : NSObject
@property NSString *name;
@property NSMutableArray *times;
- (instancetype)init:(NSString *)challengeName;
- (void) addObject:(LTTime *) time;
@end
现在我的UITableViewController
我试图以挑战的名义填满我的桌子。首先,我给他们价值:
- (void)viewDidLoad
{
[super viewDidLoad];
//Instantiate
lapTimerModel = [[LTModel alloc] init];
[lapTimerModel addChallenge:@"Clap 20 times"];
[lapTimerModel addChallenge:@"Say the alphabet"];
[lapTimerModel addChallenge:@"100 Meter Sprint Challenge"];
[lapTimerModel addChallenge:@"Read the IOS al spec challenge"];
}
最后,我在这里填写了我需要挑战名称的表格:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return [lapTimerModel numberOfChallenges];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if(cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = [lapTimerModel challengeAtIndex]; //???? Maybe in this line I need challenges array in LTModel, I used this but did not work
// cell.textLabel.text = [lapTimerModel.challenges objectAtIndex:indexPath.row];
return cell;
}
如何在我标有问号的行中使用objectAtIndex:indexPath.row
?感谢任何建议。
修改
以下是challengeAtIndex
-(LTChallenge*) challengeAtIndex : (NSInteger) index{
return [_challenges objectAtIndex:index];
}
答案 0 :(得分:1)
挑战不是NSString。并且您需要将NSString分配给cell.textLabel.text:
LTChallenge *challenge = [lapTimerModel challengeAtIndex:indexpath.row];
cell.textLabel.text = challenge.name;