OC原理之多线程(二)
2021-03-01 13:29
标签：fir invalid kvo val first mod uncaught The 代码 对于如下代码的，它的打印结果是什么 运行之后打印结果如下: 从报错来看，在执行testhaha方法的时候，线程已经退出 解决方法，开启runloop，延长线程的时间: OC原理之多线程(二) 标签：fir invalid kvo val first mod uncaught The 代码 原文地址：https://www.cnblogs.com/muzichenyu/p/14438984.htmlNSThread *thread = [[NSThread alloc] initWithBlock:^{
NSLog(@"1");
}];
[thread start];
[self performSelector:@selector(testhaha) onThread:thread withObject:nil waitUntilDone:true];
- (void)testhaha {
NSLog(@"2");
}
2021-02-23 23:59:45.245881+0800 KVOTest[17729:646223] 1
2021-02-23 23:59:45.253879+0800 KVOTest[17729:646135] *** Terminating app due to uncaught exception ‘NSDestinationInvalidException‘, reason: ‘*** -[ViewController performSelector:onThread:withObject:waitUntilDone:modes:]: target thread exited while waiting for the perform‘
*** First throw call stack:
NSThread *thread = [[NSThread alloc] initWithBlock:^{
NSLog(@"1");
[[NSRunLoop currentRunLoop] addPort:[[NSPort alloc] init] forMode:NSRunLoopCommonModes];
[[NSRunLoop currentRunLoop] run];
}];
[thread start];
[self performSelector:@selector(testhaha) onThread:thread withObject:nil waitUntilDone:true];
- (void)testhaha {
NSLog(@"2");
}