错误：索引 1 超出范围 [0 .. 0]

Posted 2023-02-27

【中文标题】错误：索引 1 超出范围 [0 .. 0]

【英文标题】：Error: index 1 beyond bounds [0 .. 0]

【发布时间】：2013-01-19 15:52:32

【问题描述】：

我是 Xcode 的菜鸟，我一直在使用 UITableViewController 显示此错误。

这是错误信息： * 由于未捕获的异常“NSRangeException”而终止应用程序，原因：“* -[__NSArrayM objectAtIndex:]: index 1 beyond bounds [0 .. 0]” * 首先抛出调用栈： （0x1c91012 0x10cee7e 0x1c330b4 0x36d0 0xc58d5 0xc5b3d 0xacce83 0x1c450376 0x1c4f440 0x1c36f44 0x1c3624 0x1c36e1b 0x1b7e3 0x1beb668 0x1665c 0x2132 0x2065） libc++abi.dylib：终止调用抛出异常 (lldb)

这是我的代码：

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath


 if (indexPath.row == 0) 

    NSString *strURL = [NSString stringWithFormat:@"http://localhost:8888/GetDetail.php?choice=row0"];
    NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];


    arrayDataFromServer2 = [[NSMutableArray alloc]init];

    NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];

    id objName;

    while ( objName = [enumForNames nextObject]) 
        [arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, @"name", nil]];
    

    NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];

    row1 = [nn intValue];
    NSLog(@"%d", row1);

    CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:@"Profile"];
    [self.navigationController pushViewController:profile animated:YES];

    profile.profileid = row1;
    NSLog(@"%d", profile.profileid);


if (indexPath.row == 1) 

    NSString *strURL = [NSString stringWithFormat:@"http://localhost:8888/GetDetail.php?choice=row1"];
    NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];


    arrayDataFromServer2 = [[NSMutableArray alloc]init];

    NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];

    id objName;

    while (objName = [enumForNames nextObject]) 
        [arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, @"name", nil]];
    

    NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];

    row1 = [nn intValue];
    NSLog(@"%d", row1);

    CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:@"Profile"];
    [self.navigationController pushViewController:profile animated:YES];

    profile.profileid = row1;
    NSLog(@"%d", profile.profileid);


if (indexPath.row == 2) 

    NSString *strURL = [NSString stringWithFormat:@"http://localhost:8888/GetDetail.php?choice=row2"];
    NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];


    arrayDataFromServer2 = [[NSMutableArray alloc]init];

    NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];

    id objName;

    while ( objName = [enumForNames nextObject]) 
        [arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, @"name", nil]];
    

    NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];

    row1 = [nn intValue];
    NSLog(@"%d", row1);

    CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:@"Profile"];
    [self.navigationController pushViewController:profile animated:YES];

    profile.profileid = row1;
    NSLog(@"%d", profile.profileid);


if (indexPath.row == 3) 

    NSString *strURL = [NSString stringWithFormat:@"http://localhost:8888/GetDetail.php?choice=row3"];
    NSArray *arrayImagesNames = [[NSMutableArray alloc] initWithContentsOfURL:[NSURL URLWithString:strURL]];


    arrayDataFromServer2 = [[NSMutableArray alloc]init];

    NSEnumerator *enumForNames = [arrayImagesNames objectEnumerator];

    id objName;

    while ( objName = [enumForNames nextObject]) 
        [arrayDataFromServer2 addObject:[NSDictionary dictionaryWithObjectsAndKeys:objName, @"name", nil]];
    

    NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];

    row1 = [nn intValue];
    NSLog(@"%d", row1);

    CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:@"Profile"];
    [self.navigationController pushViewController:profile animated:YES];

    profile.profileid = row1;
    NSLog(@"%d", profile.profileid);
 

当我单击第二个单元格 (index.row == 1) 时，会发生此错误。 我已经使用了断点并且错误就行了： "NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];"

请帮忙！

【问题讨论】：

尝试找出您的数据源为空的原因。学习阅读崩溃日志。

告诉我们确切的语句并尝试使用断点到达确切位置...

@AnoopVaidya 我使用了断点，错误出现在 "NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];" 行当我点击 index.row == 1

【参考方案1】：

斯威夫特 4

经过更多的时间，我得到了这个错误的爱? 当您使用情节提要中的 tableView 并在代码中实现时： 提示并比较： 在节数和 numberOfRowsInSection == 故事板和代码之间

 override func numberOfSections(in tableView: UITableView) -> Int 
        // #warning Incomplete implementation, return the number of sections
        return 3
    

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int 
        // #warning Incomplete implementation, return the number of rows
        return 1
    

【参考方案2】：

您有一个数组，其中包含 0 或 1 个元素。现在你试图从中提取第二个元素，[0] 是第一个，[1] 是第二个。

编辑：

因为您不确定数组何时会包含 1 个或多个对象。因此，您可以用作：

NSString *nn=nil;
if([arrayDataFromServer2 count]>1)    
    nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];

【讨论】：

我已编辑问题以更清楚地解释问题。请帮忙！

代码出现了另一个问题。当我使用此代码时： NSString *nn; if([arrayDataFromServer 计数]>1) nn = [[arrayDataFromServer objectAtIndex:indexPath.row] objectForKey:@"name"]; CompanyProfileViewController *profile = [self.storyboard instantiateViewControllerWithIdentifier:@"Profile"]; [self.navigationController pushViewController:profile Animation:YES]; profile.profileid = [nn intValue]; NSLog(@"%d", profile.profileid); ---- 不会更改 profile.profileid 值。您对此有什么建议吗？

不确定（因为这通常是一个 ios 逻辑，我不太喜欢），但您正在创建 CompyProfileViwConrlr 的新实例...