NSMutableArray - 通过使用字符串搜索获取数组索引整数 [英] NSMutableArray - Get Arrays Index Integer By Searching With A String

问题描述

我一直在使用NSMutableArray，并且没有问题通过使用 objectAtIndex：int 从数组中检索对象。

I have been working with NSMutableArray and have had no problems retrieving an object from an array by using objectAtIndex:int. Rather then pulling an object out of the array by an integer is their a way to get the index position by searching the array with a string.

animalOptions = [[NSMutableArray alloc] init]; 
//Add items
[animalOptions addObject:@"Fish"];
[animalOptions addObject:@"Bear"];
[animalOptions addObject:@"Bird"];
[animalOptions addObject:@"Cow"];
[animalOptions addObject:@"Sheep"];

NSString * buttonTitle = [animalOptions objectAtIndex:1];
// RETURNS BEAR

int * objectIndex = [animalOptions object:@"Bear"];
// THIS IS WHAT I NEED HELP WITH, PULLING AN INDEX INTEGER WITH A STRING (ex: Bear)

希望这有意义，并且有一个答案，我已经无法在线研究，通过谷歌或苹果的类引用找到任何东西。

Hopefully this makes sense, and there is an answer out there, I have been unable to research online and find anything through google or apple's class references.

推荐答案

您可以使用 NSArray ：

NSUInteger index = [animalOptions indexOfObject:@"Bear"];

如果有重复条目，则返回该对象的最低索引。有关详情，请参阅 docs 。

If there are duplicate entries then the lowest index of that object is returned. For more information, take a look at the docs.

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