来自Objective-C中的字符串的对象名称 [英] Object name from String in Objective-C

问题描述

我想从字符串中设置UIButton之类的对象的名称.

i want to set the name of an object like UIButton from a string.

NSString *buttonName = [[NSString alloc] initWithString:@"someString"];

NSString *buttonName = [[NSString alloc] initWithString:@"someString"];

我的目标是:

UIButton *someString = [[UIButton buttonWithType:UIButtonTypeCustom]retain];

UIButton *someString = [[UIButton buttonWithType:UIButtonTypeCustom]retain];

我该如何解决?

推荐答案

您不能-在执行任何Objective-C代码之前，编译器都会很好地解析变量名.您可以 使用NSMutableDictionary:

You can't - variable names are resolved by the compiler well before any Objective-C code is executed. What you can do is maintain a map of strings to objects like buttons etc. using NSMutableDictionary:

NSString *string = @"someString";
[buttonMap setObject: [UIButton buttonWithType:UIButtonTypeCustom] forKey: string];

//...time passes...

[[buttonMap objectForKey: @"someString"] setEnabled: YES];

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