我想在主线程上执行动画(原因是UIKit对象不是线程安全的),但在一些单独的线程中做好准备。我有(baAnimation - 是CABasicAnimation分配&前inited):使用NSInvocation在主线程上执行选择器
SEL animationSelector = @selector(addAnimation:forKey:);
NSString *keyString = @"someViewAnimation";
NSInvocation *inv = [NSInvocation invocationWithMethodSignature:[workView.layer methodSignatureForSelector:animationSelector]];
[inv setTarget:workView.layer];
[inv setSelector:animationSelector];
[inv setArgument:baAnimation atIndex:2];
[inv setArgument:keyString atIndex:3];
[inv performSelectorOnMainThread:@selector(invoke) withObject:nil waitUntilDone:NO];
我得到:
***
+ NSCFString长]:无法识别的选择发送到类0x1fb36a0
电话:
> #0 0x020984e6 in objc_exception_throw
> #1 0x01f7e8fb in +[NSObject doesNotRecognizeSelector:]
> #2 0x01f15676 in ___forwarding___
> #3 0x01ef16c2 in __forwarding_prep_0___
> #4 0x01bb3c21 in -[CALayer addAnimation:forKey:]
> #5 0x01ef172d in __invoking___
> #6 0x01ef1618 in -[NSInvocation invoke]
但[workView.layer addAnimation:baAnimation forKey:@"someViewAnimation"];
工作正常。我究竟做错了什么?
这应该是公认的正确答案,因为这是更大的问题(根本不传递正确的东西,而不是内存管理问题) – user102008 2011-08-01 01:22:13