how to check NSString in NSMutableArray [duplicate] - ios

Question

This question already has answers here:
How might I check if a particular NSString is present in an NSArray?
(3 answers)
Closed 9 years ago.
I want search (to check) one NSString in NSMutableArray. but I dont know about it.
NSMutableArray *a = [[NSMutableArray alloc]initWithObjects:#"Marco",#"christian",#"hon",#"John",#"fred",#"asdas", nil];
NSString *name = #"John";
I want to see is there name variable in a NSMutableArray variable ?

Answer 1

Use containsObject: method to check this :
NSMutableArray *a = [[NSMutableArray alloc]initWithObjects:#"Marco",#"christian",#"hon",#"John",#"fred",#"asdas", nil];
NSString *name = #"John";
if ([a containsObject:name]) {
// Your array cotains that object
}
Hope it helps you.

Answer 2

run a loop and check .
-(BOOL)array:(NSArray*)array containsString:(NSString*)name
{
for(NSString *str in array)
{
if([name isEqualToString:str])
return YES;
}
return NO;
}
In this way array find out object that it contains.
you can also use a single line
[array containsObject:name]

Answer 3

If you are also interested in the position of your element you can use
- (NSUInteger)indexOfObject:(id)anObject
it will return NSNotFound if the object is not in the array, or the index of the object

Answer 4

You can use the following code
if([a containsObject: name])
{
//here your code
}

Answer 5

[a containsObject:name]
This might help you.

Answer 6

I suggest you to use indexOfObject:. Because using this way you can not only check whether it exists but also get the index if it indeed exists.
NSMutableArray *array = [[NSMutableArray alloc] initWithObjects:#"Marco",#"christian",#"hon",#"John",#"fred",#"asdas", nil];
NSString *name = #"John";
NSInteger index = [array indexOfObject:name];
if (index != NSNotFound) {
NSLog(#"Find name %#", name);
} else {
NSLog(#"Name %# not fount", name);
}