xcode 错误：索引 1 超出范围 [0 .. 0]

Error: index 1 beyond bounds [0 .. 0]

提问by

I am a rookie in Xcode and I have been using the UITableViewController which shows this error.

我是 Xcode 的新手，我一直在使用显示此错误的 UITableViewController。

This is the error message:*Terminating app due to uncaught exception 'NSRangeException', reason: '* -[__NSArrayM objectAtIndex:]: index 1 beyond bounds [0 .. 0]' *First throw call stack: (0x1c91012 0x10cee7e 0x1c330b4 0x36d0 0xc58d5 0xc5b3d 0xacce83 0x1c50376 0x1c4fe06 0x1c37a82 0x1c36f44 0x1c36e1b 0x1beb7e3 0x1beb668 0x1665c 0x2132 0x2065) libc++abi.dylib: terminate called throwing an exception (lldb)

这是错误消息：*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]” *First throw call stack: (0x1c91012 0x10cee7e 0x1c330b40 0x36d 0xc58d5 0xc5b3d 0xacce83 0x1c50376 0x1c4fe06 0x1c37a82 0x1c36f44 0x1c36e1b 0x1beb7e3 0x1beb7e3 0x1beb668 0x16210c++ 抛出异常（抛出异常）和 0x162623c++ 0x1626c 0x1623c++ 0x1626c 0x1626c++ 终止

This is my code:

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);
 }
}

When I click on the second cell (index.row == 1) this error would occur. I have used breakpoint and the error was on the line: "NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];"

当我单击第二个单元格 (index.row == 1) 时，会发生此错误。我使用了断点，错误就在行上：“NSString *nn = [[arrayDataFromServer2 objectAtIndex:indexPath.row] objectForKey:@"name"];”

Please Help!

请帮忙！

采纳答案by Anoop Vaidya

You have an array and you have either 0 or 1 elements in it. Now you are trying to extract 2nd element from it, [0] is first, and [1] is second.

您有一个数组，其中有 0 或 1 个元素。现在您正在尝试从中提取第二个元素，[0] 是第一个，[1] 是第二个。

EDIT:

编辑：

As you are not sure when the array will contain 1 or more objects. Therefore you can use as:

因为您不确定数组何时将包含 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"];
}

回答by islam XDeveloper

Swift 4

斯威夫特 4

after more time i am get the love for this Error when you use the tableView from the storyboard and implementing in your code : hint that and compare : between the number of section and numberOfRowsInSection == storyboard and code

更长时间后，当您使用故事板中的 tableView 并在您的代码中实现时，我对这个错误产生了爱：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
    }