NSThread的四种创建方法

//方式1  创建线程

NSThread *thread = [[NSThread alloc] initWithTarget:self selector:@selector(demo) object:nil];

//手动开启

[thread start];

//方式2  创建线程并启动线程

[NSThread detachNewThreadSelector:@selector(demo) toTarget:self withObject:nil];

//方式3 创建线程

[self performSelectorInBackground:@selector(demo) withObject:nil];

//方式4 创建线程执行带参数的方法

NSThread *thread = [[NSThread alloc] initWithTarget:self selector:@selector(demo:) object:@"aabb"];

[thread start];

}

- (void)demo:(NSString *)param {

NSLog(@"hello %@",param);

}

//线程执行的方法

- (void)demo {

NSLog(@"hello %@",[NSThread currentThread]);

}