NSString stringwithstring 和 stringwithformat 区别
我真的很困惑，任何帮助都会受到高度赞赏
所以下面有什么区别
int myInteger = 1;
myString = [NSString stringWithFormat:@"anotesound%i",myInteger];
，
myString = [NSString stringWithString:@"anotesound1"];
我认为两者应该相同，但 open al 不接受它们是相等的，它适用于 stringwithstring 但不适用于 stringwithformat
I am really confused any help will be highly appreciated
So what is the difference below
int myInteger = 1;
myString = [NSString stringWithFormat:@"anotesound%i",myInteger];
and this
myString = [NSString stringWithString:@"anotesound1"];
I thought both should be same but open al do not accept those are equal, it works for the stringwithstring but not works for stringwithformat
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stringWithFormat：总是返回一个新创建的自动释放的对象，该对象最终会被释放并成为僵尸。 stringWithString：在这种情况下返回文字（常量）对象本身，该对象永远不会被释放。
我建议你学习iOS的内存管理，或者使用ARC。
http://developer.apple.com/library/ios/documentation/可可/概念/MemoryMgmt/
stringWithFormat: always returns a newly created and autoreleased object, which will eventually be released and become a zombie. stringWithString: in this case returns the literal (constant) object itself, which will never been released.
I'd recommend you to learn the memory management of iOS, or use ARC.
http://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/MemoryMgmt/
结果是一样的，错误在别处。
区别在于 myInteger 是否是常量或在不同实例化时填充变化。如果它总是相同，只需使用：
myString = @"anotesound1";当字符串是常量时，不需要
stringWithString方法。The results are the same, the error is elsewhere.
The difference is in wether or not myInteger is a constant or fill change on different instantiations. If it is always the same just use:
myString = @"anotesound1";There is no need for the
stringWithStringmethod when the string is a constant.