程序接收信号:"EXC_BAD_ACCESS" [英] Program received signal: “EXC_BAD_ACCESS”

问题描述

我有一个字符串变量，用于存储日期选择器中的日期，但是当我在其他函数中使用它的值时，出现错误，例如程序收到的信号:"EXC_BAD_ACCESS".注意:变量是全局定义的.

I have a string variable which stores date from date picker but when I use its value in other function I am getting error like Program received signal: "EXC_BAD_ACCESS". Note: variable is globally defined.

代码:

    - (void) changedDate: (UIDatePicker *) picker 
    {
     if (appDelegate.dateint == 8)
     {
     NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; 

[dateFormatter setDateFormat:@"dd MMM, yyyy"];
     datestr=[dateFormatter stringFromDate:[dptpicker date]]; 
    NSLog(@"date:%@",datestr); 
    } 
    else if(appDelegate.dateint == 9) 
    { NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease]; 

[dateFormatter setDateFormat:@"dd MMM, yyyy"]; 
    datestr1=[dateFormatter stringFromDate:[dptpicker date]] ;
     NSLog(@"date1:%@",datestr1);
     } 
    }

推荐答案

您必须保留该字符串.这是最可能的原因.

You have to retain that string. This is the most likely reason.

它崩溃的唯一原因是指针错误.错误的指针=过度释放对象.只需在启用了僵尸的情况下运行您的应用程序，您就会看到执行此操作的位置.选中此 http://www.markj.net/iphone-memory-debug-nszombie/

The only reason why it is crashing is the bad pointer. The bad pointer = over-releasing the object. Just run your app with zombies enabled and you'll see the place where you're doing that. Check this http://www.markj.net/iphone-memory-debug-nszombie/

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