Question

I implemented the core plot in my app & it works fine. But it show the graph only first time. when i try it to see again, It shows me bad excess.

The problem is all the data in CPDStockPriceStore.m is call first time & try it see the graph again, then the breakpoint in CPDStockPriceStore.m are not come & it will direct shoe me Bad_Excess in chartviewController

the line code where i am getting bad_excess :

NSInteger valueCount = [[[CPDStockPriceStore sharedInstance] datesInMonth] count];

I think there is a problem on sharedInsance. Is it so?

I don’t know why this happen??

Update

I implemented the core plot in my app & it works fine. But it show the graph only first time. when i try it to see again, It shows me Graph with old Data.

The problem is all the data in CPDStockPriceStore.m is call first time & try it see the graph again, then the breakpoint in CPDStockPriceStore.m are not come

i have a table view & show graph with different data according to row selected. But now, The CPDStockprice file is not call more than ONE time. So, i can’t able to show graph with different data. graph shows me with same data which i selected the row first. If i select new row then it shows me graph with previous data.

I don’t know why this happen?? Help me!

Answer 1

You get EXC_BAD_ACCESS errors (rather than Bad_Excess, which doesn’t exist) if you try to dereference (i.e. access) a reference to an objective C object which has been deallocated.

In other words, it’s a memory management issue. The problem is that the retain count for your object has reached 0, and the runtime has deallocated the object — it’s not there any more.

Are you using ARC in your project?