一、NSThread
1、创建方法三种
...
/** 方法一，需要start */
NSThread*thread1 = [[NSThreadalloc] initWithTarget:selfselector:@selector(doSomething1:) object:@"NSThread1"];
...
// 线程加入线程池等待CPU调度，时间很快，几乎是立刻执行
[thread1 start];
/** 方法二，创建好之后自动启动 */
[NSThreaddetachNewThreadSelector:@selector(doSomething2:) toTarget:selfwithObject:@"NSThread2"];
/** 方法三，隐式创建，直接启动 */
[selfperformSelectorInBackground:@selector(doSomething3:) withObject:@"NSThread3"];
- (void)doSomething1:(NSObject*)object {
// 传递过来的参数
NSLog(@"%@",object);
NSLog(@"doSomething1：%@",[NSThread currentThread]);
}
- (void)doSomething2:(NSObject*)object {
NSLog(@"%@",object);
NSLog(@"doSomething2：%@",[NSThread currentThread]);
}
- (void)doSomething3:(NSObject*)object {
NSLog(@"%@",object);
NSLog(@"doSomething3：%@",[NSThread currentThread]);
}
2、打印当前线程：
NSLog(@"doSomething----：%@",[NSThread currentThread]);
3、休眠：
/** 休眠 */
//休眠多久
[NSThreadsleepForTimeInterval:2];
//休眠到指定时间
[NSThreadsleepUntilDate:[NSDatedate]];
4、设置优先级
thread1.threadPriority;
二 、GCD（异步dispatch_async，同步dispatch_sync）
