Runtime EXC_BAD_ACCESS with barchart whiles zoom in

[ReneVella]

During run time a EXC_BAD_ACCESS dump is experienced while you try to zoom on the chart using Xcode 8.3.3 and ioscharts 3.0.2. The App has no errors, complies and build successfully. Any help will be very much appreciated as i have been days trying to fix this issue.

[liuxuan30]

Did you changed ChartsDemo or ChartsDemo just crashes?
You have to look at months first

- (NSString *)stringForValue:(double)value
                        axis:(ChartAxisBase *)axis
{
    return months[(int)value % months.count];
}

this is found in combined chart, but you are using multiple bar chart I think. Did you copy paste them without other ops? This could be a problem

[ReneVella]

Hi,
i did not change ChartsDemo but copied the relevant code into my App. The ChartsDemo work well with no issues.

what do you mean by "without other ops" ?

[ReneVella]

I managed to replicate and isolate the issue. It seems that this issue only occurs when i'm not using Storyboards. That is i'm using xib Files in the project navigation. Sill would like to find a solution to this bug ?

[liuxuan30]

I still think you have issue for months[(int)value % months.count];.
You can't simply copy code without knowing what's the content of months. When your app crashes you need always to check the crash log rather than "EXC_BAD_ACCESS".
as I don't have your code, you can easily debug on your side what's the reason of crashing.

[ReneVella]

Hi,

the content of months is the following:-

months = @[
@"Jan", @"Feb", @"Mar",
@"Apr", @"May", @"Jun",
@"Jul", @"Aug", @"Sep",
@"Oct", @"Nov", @"Dec"
];

[ReneVella]

mode debug info
Printing description of self->months:
(NSObject) NSObject = {
isa = 0xbadd09d9c5a5bead
}
Printing description of self->months:
(NSArray *) months = 0x00000001700cb2f0
Printing description of self->months->isa:
-2.31330477153741e+16
Printing description of self->months->isa:
-2.31330477153741e+16
Printing description of self->months:
(NSObject) NSObject = {
isa = 0xbadd09d9c5a5bead
}
(lldb)

[ReneVella]

@liuxuan30

is it possible to disable the zooming on the Graph ?

[thierryH91200]

try
chartView.doubleTapToZoomEnabled = false

[ReneVella]

@thierryH91200

thanks but no luck, i also tried the following:-

_chartView.doubleTapToZoomEnabled = NO;
_chartView.pinchZoomEnabled = NO;