设置AlertViewStyle时应用程序崩溃

Question

I'm trying to use the alertviewstyle to use the text input from a user. When I show the alertview without changing the style, it works.

When I change the style to UIAlertViewStylePlainTextInput I get this error:

error: address doesn't contain a section that points to a section in a object file.

I am using the follow code:

nameAlertView =
    [[UIAlertView alloc] initWithTitle:[langFile objectForKey:@"sequenceTitel"]
                               message:[langFile objectForKey:@"sequenceTitel"]
                              delegate:self
                     cancelButtonTitle:[langFile objectForKey:@"cancel"]
                     otherButtonTitles:[langFile objectForKey:@"save"], nil];

nameAlertView.alertViewStyle = UIAlertViewStylePlainTextInput;

[nameAlertView show];
[nameAlertView release];

Edit

I'm using iOS 5.1 and I had the follow feedback from debugger:

Training Tool(2332,0x3f080d98) malloc: * mmap(size=1342177280) failed (error code=12) error: can't allocate region * * set a breakpoint in malloc_error_break to debug

---

It's strange because sometimes it works when completing the same actions in my view

Answer 1

You'll find out what the object is when you break in the debugger. Just look up the call stack and you will find where you free (or release) it. That will tell you which object it is.

The easiest way to set the breakpoint is to:

Goto Run -> Show -> Breakpoints (Alt-Command-B)
Scroll to the bottom of the list and add the symbol malloc_error_break

Answer 2

I've met the same problem when setting the deployment target to 4.X since this style property is only supported in ios5. Make sure "deployment target" is 5.1 even if your device is ios 5.1.

Answer 3

显示后不要立即释放UIAlertView，而是在委托回调中释放它。

Answer 4

I encountered the same problem today, I searched for this thing , it solves my problem, I hope you can answer confusion. It means that because before setting alert.alertviewstyle, your keyboard is open resulting in the problem, when I turn off the keyboard before setting alertviewstyle, and it's normal. This is the iOS 9 before a bug, iOS 9 fix it.