ios 如何在目标c中找到数组索引值
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how to find the Array index value in objective c
提问by kannan
Possible Duplicate:
Getting Index of an Object from NSArray?
可能的重复：
从 NSArray 获取对象的索引？
I have one Array and one string. Array name is "Array1", String name is "String", Now i have this below Values in "Array1".
我有一个数组和一个字符串。数组名称是“Array1”，字符串名称是“String”，现在我在“Array1”中的值下面有这个。
"array1 = [[NSMutableArray alloc]initWithObjects:@"A",@"b",@"c",@"d",@"e", nil];"
My String value is "A"
我的字符串值为“A”
Now i want to compare these string and array. And i want to display the Array index value.
现在我想比较这些字符串和数组。我想显示数组索引值。
How can i do this. Please somebody help me. Thanks in advance.
我怎样才能做到这一点。请有人帮助我。提前致谢。
回答by Andrey Chernukha
i'm not sure if this is what you're looking for but maybe:
我不确定这是否是您要找的，但也许：
int index = [array1 indexOfObject:String];
回答by Buntylm
int i;
for (i = 0; i < [myArray count]; i++) {
id myArrayElement = [myArray objectAtIndex:i];
...do something useful with myArrayElement
}`
You can Iterate NSMutableArray and to find the location of particular Object use
您可以迭代 NSMutableArray 并找到特定对象使用的位置
int indexValue = [myArray indexOfObject:yourString];
回答by Anusha Kottiyal
Try this,
尝试这个，
if([array1 containsObject: yourString])
{
int index = [array1 indexOfObject:yourString];
}
回答by Anoop Vaidya
Use
用
NSString *String=@"A";
NSInteger index = [array1 indexOfObject:String];
NOTE : Never use variable name with capital String, it should be string.
注意：永远不要使用大写的变量名String，它应该是string。
回答by who9vy
Checking
检查
int index = [yourArray indexOfObject:yourObject];
is correct for NSStringobjects and some other types of objects.
对于NSString对象和其他一些类型的对象是正确的。
When you have implemented a class on your own and you want to get the index of an object within an array you have to implement the method
当您自己实现了一个类并且想要获取数组中对象的索引时，您必须实现该方法
- (BOOL)isEqual:(id)anObject
