Objective-C-将变量传递给可变长度方法 [英] Objective-c - Passing in variables to a variable-length method

问题描述

我有一个包含项的数组，我想将它们传递给可变长度方法.你怎么做到的?

I've got an array with items, and I want to pass these in to a variable-length method. How do you do that?

也就是说，我有这个(例如):

I.e., I've got this (for example):

NSArray *array = [NSArray arrayWithObjects:@"1", @"2", @"3", nil];

[[UIAlertView alloc] initWithTitle:@"title" message:@"message" delegate:nil cancelButtonTitle:[array objectAtIndex:0] otherButtonTitles:[array objectAtIndex:1], [array objectAtIndex:2], nil];

但是请想象一下，数组可能具有可变长度的项目，因此您不能像这样对它进行硬编码.

But imagine that array could have a variable length of items, so you cant hardcode it like this.

推荐答案

-[UIAlertView initWithTitle:message:delegate:cancelButtonTitle:otherButtonTitles:]中otherButtonTitles参数的文档指出:

使用此参数等效于调用带有该标题的addButtonWithTitle:来添加更多按钮.

Using this argument is equivalent to invoking addButtonWithTitle: with this title to add more buttons.

您尝试过吗:

NSArray *array = [NSArray arrayWithObjects:@"1", @"2", @"3", nil];
UIAlertView *view = [[UIAlertView alloc] initWithTitle:@"title" message:@"message" delegate:nil cancelButtonTitle:@"cancel" otherButtonTitles:nil];
for (NSString *s in array) {
    [view addButtonWithTitle:s];
}

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