OC中多线程的创建方法

方法一:

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

方法二：

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

方法三：

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

方法四：多线程blog创建

NSOperationQueue *operationQueue = [[NSOperationQueue alloc] init];

//会开启一个多线程

[operationQueue addOperationWithBlock:^{

for(int i = 0; i < 50 ;i++)

{

NSLog(@"多线程:%d",i);

}

}];

方法五：

//相当于是一个线程池

operationQueue.maxConcurrentOperationCount = 1;//设置并发数

//创建线程

NSInvocationOperation *opertion1 = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(thread1) object:nil];

//设置线程的优先级

[opertion1 setQueuePriority:NSOperationQueuePriorityVeryLow];

//创建另一个线程

NSInvocationOperation *opertion2 = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(thread2) object:nil];

[opertion2 setQueuePriority:NSOperationQueuePriorityHigh];

方法六：

dispatch_queue_t queue = dispatch_queue_create("test",NULL);

dispatch_async(queue,^{

for(int i=0;i<50;i++)

NSLog(@"多线程：%d",i);

});