Getting Value from Dictionary - ios

Question

data = (
{
date = "2016-01-20";
"end_time" = "11:10:00";
"function_code" = RCV;
"operator_id" = JOHN;
"start_time" = "11:00:00";
"total_time" = 10;
"total_units" = 19;
},
{
date = "2016-01-20";
"end_time" = "12:25:00";
"function_code" = PIK;
"operator_id" = JOHN;
"start_time" = "12:15:00";
"total_time" = 10;
"total_units" = 26;
}
)
this array containing 2 dictionary ,i have to get the endtime from the first dictionary and starttime from the second dictionary and i want to calculate the break time from this value.i know how to get the value dictionary . data[0][#"end_time"] and data[1][#"start_time"] this is sufficient if array contains two elements .but if array has more than 5 means,i want to iterate the array .i will update my code what i did ...
my array name is arrData
for (int i 0; i<arrData.count; i++) {
dictData =arrData[i];
NSString *startTime =[dictData objectForKey:#"start_time"];
NSString *totalTime = [dictData objectForKey:#"total_time"];
NSNumber *numTotalUnits =[dictData objectForKey:#"total_units"];
NSString *functionCode = [dictData objectForKey:#"function_code"];
NSString *endTime = [dictData objectForKey:#"end_time"];
NSLog(#"%#",endTime);
[array1 addObject:endTime];
if (arrData[i+1] > arrData.count) {
dictData = arrData[i+1];
NSLog(#"%#",dictData);
NSString *strStartTime = [dictData objectForKey:#"start_time"];
NSLog(#"%#",strStartTime);
[array1 addObject:strStartTime];
NSLog(#"%#",array1);
}
}
i tried this coding but i got error like index 2 beyond bounds[0..1]

Answer 1

Try for (int i = 0; i < arrData.count - 1; i++) {.
In your current code, you let i become equal to arrData.count - 1 in the loop, which means that when you check i + 1 you're looking past the final array element.