Adding an object at a specific index of an NSMutableArray
91,223
Solution 1
Take a look at the insertObject:atIndex:
method of the NSMutableArray class. Adding to the "front" of the array implies index 0.
For example:
NSMutableArray * array = [[NSMutableArray alloc] initWithCapacity:3];
[array addObject:@"b"]; // Contains "b"
[array insertObject:@"a" atIndex:0]; // Contains "a", "b"
[array insertObject:@"c" atIndex:2]; // Contains "a", "b", "c"
Solution 2
Updated for Swift 3:
If you want to Add an object at a specific index of a NSMutableArray, use below a simple line of code:
self.yourMutableArrayName.insert(<#T##newElement: String##String#>, at: <#T##Int#>)
Example: if you want to add string: "Nature" at index: 3
var str = "Nature"
self.yourMutableArrayName.insert(str, at: 3)
// Enjoy..!
Author by
some_id
Updated on July 08, 2022Comments
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some_id almost 2 years
How can an object be added at a specific index of an
NSMutableArray
?How is an object added to the front of the array?