Swift NSMutableArray add one more array

Question

The Problem is First time I get data from WebServices so I have show this data on TableView Then user scroller down tableview then again call WebSevices and add this data to again in array but when I try to add data again in nsmutable type array app is crashing

Here is my code. Any solution?

1st time Data load is Working

 var ary_mutable: NSMutableArray! 
 ary_mutable = NSMutableArray()
        ary_mutable=jsonResult as AnyObject as! NSMutableArray
                        self.tbl_T.reloadData();
                        self.tbl_T.delegate=self;
                        self.tbl_T.dataSource=self;

2nd Time data load and add with old array not Working

var myArray :NSArray!
                myArray = jsonResult as AnyObject as! NSArray
 ary_mutable.addObject(myArray.objectAtIndex(0))

Got This Error

[__NSCFArray insertObject:atIndex:]: mutating method sent to immutable object'

I have Try this code also But Not Working

ary_mutable.addObject(myArray)

Avt · Accepted Answer · 2015-09-07 19:52:48Z

7

You should create a mutable array from immutable. This:

ary_mutable=jsonResult as AnyObject as! NSMutableArray

does not do it, it is just a static cast from one type to another. You have to construct a new NSMutableArray and then fill it with required values.

Change your code to

var ary_mutable = NSMutableArray()

// everytime you receive a new data
ary_mutable.addObjectsFromArray(jsonResult as! [AnyObject])

edited Sep 7, 2015 at 19:52

answered Sep 7, 2015 at 15:10

Avt

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2 Comments

Nishant Chandwani Over a year ago

This Code Replace old Data . But Requirement is (Old Array Data) + (New Array Data) Means First time load data now Count is 15 then again load 5 more data now array count is 20 Like this type please help me

Nishant Chandwani Over a year ago

Big Big Thankyouuuuuuuuuu its Working

Umair_UAS · Accepted Answer · 2015-09-07 15:25:09Z

2

replace this code:

var myArray :NSArray!
myArray = jsonResult as AnyObject as! NSArray
ary_mutable.addObject(myArray.objectAtIndex(0))

with this code:

var myArray : NSMutableArray!
myArray = jsonResult as AnyObject as! NSMutableArray
ary_mutable.addObjectsFromArray(myArray as [AnyObject]);

answered Sep 7, 2015 at 15:25

Umair_UAS

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