Question

if([timer isValid])  // << breakpoint here
{
    NSLog(@"Timer Valid");
}
timer = [NSTimer scheduledTimerWithTimeInterval:[timeinterval intValue] target:self selector:@selector(PlayDelaySound) userInfo:nil  repeats:NO];

第一次未安排timer时，该功能正常运行。但是，对于后续调用，在调试时，控制台会给我记录单步执行的日志（如下所示）。然后给sigabrt。

有什么帮助吗？感谢

日志

Single stepping until exit from function objc_msgSend, 
which has no line number information.
warning: Remote failure reply: E37
Single stepping until exit from function objc_msgSend, 
which has no line number information.
warning: Remote failure reply: E37

Answer 1

也许你错过了retain？

像这样：

timer = [[NSTimer scheduledTimerWithTimeInterval:[timeinterval intValue] target:self selector:@selector(PlayDelaySound) userInfo:nil  repeats:NO]
         retain];

更新：因为如果您不保留，可能会在某个时间释放计时器实例，并且您对isValid的调用会导致崩溃。

NSTimer有效生产sigabrt

1 个答案: