ios 用变量追加字符串
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/7070046/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Append string with variable
提问by Peter Kazazes
I'm a java guy coming over to Objective-C. In java, to add a variable to a string you'd have to do something along the lines of:
我是一个来到 Objective-C 的 Java 人。在 java 中，要将变量添加到字符串中，您必须执行以下操作：
someString = "This string is equal to " + someNumber + ".";
I can't figure out how to do it in Objective-C though. I have an NSMutableStringthat I'd like to add to the middle of a string. How do I go about doing this?
我不知道如何在 Objective-C 中做到这一点。我有一个NSMutableString我想添加到字符串中间的。我该怎么做？
I've tried:
我试过了：
NSString *someText = @"Lorem ipsum " + someMutableString;
NSString *someText = @"Lorem ipsum " + [someMutableString stringForm];
and a few other things, none of which seem to work. Also interchanged the +s with ,s.
和其他一些东西，似乎都不起作用。也将+s 与,s互换。
回答by Rudy Velthuis
You can use appendString:, but in general, I prefer:
您可以使用appendString:，但总的来说，我更喜欢：
NSString *someText = [NSString stringWithFormat: @"Lorem ipsum %@", someMutableString];
NSString *someString = [NSString stringWithFormat: @"This is string is equal to %d.", someInt];
NSString *someOtherString = [NSString stringWithFormat: @"This is string is equal to %@.", someNSNumber];
or, alternatively:
或者，或者：
NSString *someOtherString = [NSString stringWithFormat: @"This is string is equal to %d.", [someNSNumber intValue]];
etc...
等等...
These strings are autoreleased, so take care not to lose their value. If necessary, retain or copy them and release them yourself later.
这些字符串是自动释放的，所以注意不要失去它们的价值。如有必要，保留或复制它们，稍后自己释放它们。
回答by Louie
Try this:
尝试这个：
NSMutableString * string1 = [[NSMutableString alloc] initWithString:@"this is my string"];
[string1 appendString:@" with more strings attached"];
//release when done
[string1 release];
回答by Trevor
You need to use stringByAppendingString
你需要使用 stringByAppendingString
NSString* string = [[NSString alloc] initWithString:@"some string"];
string = [string stringByAppendingString:@" Sweet!"];
Don't forget to [string release];when your done of course.
[string release];当然，当你完成时不要忘记。
回答by Jorge Martínez Mauricio
NSMutableString *string = [[NSMutableString alloc] init];
[string appendFormat:@"more text %@", object ];
