Objective C 中的简单字符串连接

发布于 2024-12-26 11:02:58 字数 175 浏览 5 评论 0原文

我有一个名为“you”的 NSString，其值为“这是一个 you 字符串！”。

我想在“你”中连接“123”，我该怎么做？

我正在使用这段代码，但它给出了一个错误。

you=[you stringByAppendingString:@"123"];

原文

I have an NSString named 'you' with value "This is a you string!".

I want to concat "123" in 'you', how can I do it?

I am using this code and it is giving an error.

you=[you stringByAppendingString:@"123"];

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南城旧梦 2025-01-02 11:02:58

这里的代码对我有用

NSString *s = @"avant";
s = [s stringByAppendingString:@" - après"];
NSLog(@"%@", s);

2012-01-13 11:48:59.442 tabbar[604:207] avant - 结束后

所以我的猜测是你的 you 是一个坏指针，不是 nil 并且不是你认为它有的 NSString 。

您在调用之前是否尝试过对该值进行 NSLog ？

This code here is working for me

NSString *s = @"avant";
s = [s stringByAppendingString:@" - après"];
NSLog(@"%@", s);

2012-01-13 11:48:59.442 tabbar[604:207] avant - après

So my guess is that your you is a bad pointer that is not nil and not the NSString you think it have.

Have you try an NSLog on that value before the call?

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若沐 2025-01-02 11:02:58

你也可以尝试这个：

you = [NSString stringWithFormat:@"%@%@", you, @"123"];

You can try this also:

you = [NSString stringWithFormat:@"%@%@", you, @"123"];

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夜无邪 2025-01-02 11:02:58

代码：

NSString *you;
you = @"This is you String!";
NSLog(@"you : %@ ",you);

you = [you stringByAppendingString:@"123"];
 NSLog(@"you : %@ ",you);

[you stringByAppendingFormat:@"%@%@",you,@"123"];
NSLog(@"you : %@ ",you);

控制台结果：

[233:907] 你：这是你的字符串！

[233:907] 你 : 这是你 String!123

Code :

NSString *you;
you = @"This is you String!";
NSLog(@"you : %@ ",you);

you = [you stringByAppendingString:@"123"];
 NSLog(@"you : %@ ",you);

[you stringByAppendingFormat:@"%@%@",you,@"123"];
NSLog(@"you : %@ ",you);

Result in Console :

[233:907] you : This is you String!

[233:907] you : This is you String!123

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々眼睛长脚气 2025-01-02 11:02:58

请尝试这个

NSString *version = @"14.5.1";

NSString *build = @"1.0";


self.versionLabel.text = [NSString stringWithFormat:@"%@%@%@%@%@" , @"V : " ,version,@" ( ",build, @" )" ];

Please try this

NSString *version = @"14.5.1";

NSString *build = @"1.0";


self.versionLabel.text = [NSString stringWithFormat:@"%@%@%@%@%@" , @"V : " ,version,@" ( ",build, @" )" ];

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