将整数添加到NSMUtableArray

Question

我是一名新的iPad开发人员.

我按下按钮实现UIPopover,popover包含整数值,

当我试图用整数填充我的数组时它向我显示SIGABRT:索引3超出界限我无法看到我的日志,应用程序崩溃.

这是我的代码片段:

-(void)btnClick:(id)sender {

    for (int i=3; i<=31; i++) {
        [remindarray addObject:[NSNumber numberWithInteger:i]];
         NSLog(@"no=%@",[remindarray objectAtIndex:i]);
    }

    UIViewController* popoverContent = [[UIViewController alloc]init];
    UIView* popoverView = [[UIView alloc] initWithFrame:CGRectMake(110, 0, 500, 4)];

    popoverTable = [[UITableView alloc]initWithFrame:CGRectMake(0, 0, 250, 665) style:UITableViewStylePlain];
    [popoverTable setDelegate:(id<UITableViewDelegate>)self]; 
    [popoverTable setDataSource:(id<UITableViewDataSource>)self]; 
    [self.view addSubview:popoverTable];
    [popoverTable release];

    [popoverView addSubview:popoverTable];
    popoverContent.view = popoverView;
    popoverContent.contentSizeForViewInPopover = CGSizeMake(250, 600);
    self.popoverController = [[UIPopoverController alloc]
                              initWithContentViewController:popoverContent];

    [self.popoverController  presentPopoverFromRect:CGRectMake(100,0, 535, 35) 
                                             inView:self.view permittedArrowDirections:UIPopoverArrowDirectionRight animated:YES];

    [popoverView release];
    [popoverContent release];
}

最后remind array我要去cellForRowAtIndexPath

码:

...
cell.textLabel.text=[remindarray objectAtIndex:indexPath.row];
...

Answer 1

你的for循环从3开始,所以在数组中以0项开始,然后你插入1项并尝试在索引3处记录该项,这仍然不在数组中

快速解决方法是

更改

NSLog(@"no=%@",[remindarray objectAtIndex:i]);

至

NSLog(@"no=%@",[remindarray objectAtIndex:i - 3]);

或者从0开始数组

你还需要改变

cell.textLabel.text=[remindarray objectAtIndex:indexPath.row];

至

cell.textLabel.text=[NSString stringWithFormat:@"%@", [remindarray objectAtIndex:indexPath.row]];