Unable to get an indexvalue of an object in nsmutablearray in iphone - iphone

Question

in my application at one place I have to get the index value of a particular object. For this I coded in this manner as shown below.
NSString *a=[NSString stringWithFormat:#"%d",[imagesdmobject.proofID intValue]];
NSLog(#"a value is %#",a);
Here a value is 56
Now I have to get the index of 56 from appdelegate.projectTitlesProofIDArray.
int value=[appdelegate.projectTitlesProofIDArray indexOfObjectIdenticalTo:a];
data in appdelegate.projectTitlesProofIDArray is :
41,
34,
35,
64,
45,
1,
67,
75,
76,
77,
78,
79,
80,
81,
82,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
101,
70,
71,
72,
73,
74,
39,
37,
109,
108,
110,
38,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
53,
54,
60,
61,
62,
32,
55,
56,
57,
58,
59,
42,
43,
44,
63,
47,
48,
41,
34,
35,
64,
1,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
60,
61,
62,
32,
55,
56,
57,
58,
59,
54,
34,
35,
41,
34,
35,
64,
67,
75,
76,
77,
78,
79,
80,
81,
82,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
101,
70,
71,
72,
73,
74,
39,
37,
109,
108,
110,
38,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
53,
54,
41,
34,
35,
64,
45,
1,
67,
75,
76,
77,
78,
79,
80,
81,
82,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
101,
70,
71,
72,
73,
74,
39,
37,
109,
108,
110,
38,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
53,
54,
60,
61,
62,
32,
55,
56,
57,
58,
59,
42,
43,
44,
47,
34,
35,
39,
37,
109,
108,
110,
38,
46,
47,
48,
49,
50,
52,
53,
54,
42,
43,
44,
41,
34,
35,
64,
45,
1,
67,
75,
76,
77,
78,
79,
80,
81,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
70,
71,
73,
74,
39,
37,
109,
108,
110,
38,
91,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
54,
60,
61,
62,
32,
55,
56,
57,
58,
59,
42,
43,
63,
41,
34,
35,
64,
45,
1,
67,
75,
76,
77,
78,
79,
80,
81,
82,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
101,
70,
71,
72,
73,
74,
39,
37,
109,
108,
110,
38,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
53,
54,
60,
61,
62,
32,
55,
56,
57,
58,
59,
42,
43,
44,
63,
41,
34,
35,
64,
45,
1,
67,
75,
76,
77,
78,
79,
80,
81,
82,
83,
85,
68,
86,
87,
88,
89,
90,
92,
69,
95,
97,
98,
100,
101,
70,
71,
72,
73,
74,
39,
37,
109,
108,
110,
38,
91,
93,
94,
36,
96,
99,
102,
103,
104,
105,
106,
107,
65,
66,
40,
46,
47,
48,
49,
50,
52,
53,
54,
60,
61,
62,
32,
55,
56,
57,
58,
59,
42,
43,
44,
63,
46
56 is there, but I am getting the incorrect value as 2147483647.
Please help me in this issue. I am stuck at this place.

Answer 1

You need to do this:-
Suppose you array contains:-
[array addObject:#"1"];
[array addObject:#"2"];
[array addObject:#"3"];
[array addObject:#"4"];
[array addObject:#"5"];
[array addObject:#"6"];
Now you need to find the index of object 5
if([array containsObject:#"5"])
{
int index=[array indexOfObject:#"5"];
}