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- (void)viewDidLoad {
[super viewDidLoad];
//第一种开启新的线程调用 mutableTheard
NSThread * t = [[NSThread alloc]initWithTarget:self selector:@selector(mutableTheard) object:nil];
[t start];
//第二种开启新的线程调用 mutableTheard
[NSThread detachNewThreadSelector:@selector(mutableTheard) toTarget:self withObject:nil];
//第三种开新的线程 mutableTheard
[self performSelectorInBackground:@selector(mutableTheard) withObject:self];
//第四种开新的线程
NSOperationQueue *operationQueue = [[NSOperationQueue alloc]init];
[operationQueue addOperationWithBlock:^{
for (int i = 1; i <100; i++) {
NSLog(@"---多线程");
}
}];
//第五种开新的线程
NSOperationQueue * Queue = [[NSOperationQueue alloc]init];
//设置线程执行的并发数。
Queue.maxConcurrentOperationCount = 2;
//创建一个线程惭怍对象
NSInvocationOperation * operation1 = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(mutableTheard) object:nil];
//创建一个线程惭怍对象
NSInvocationOperation *operation2 = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(mutableTheard) object:nil];
//把线程添加到队列中
[operationQueue addOperation:operation1];
[operationQueue addOperation:operation2];
//第六种开新的线程GCD
dispatch_queue_t queue = dispatch_queue_create("test", NULL);
dispatch_async(queue, ^{
NSLog(@"我在多线程");
});
//可以使用这个方法可以回到主线程
dispatch_sync(dispatch_get_main_queue(), ^{
BOOL isMain = [NSThread isMainThread];
if (isMain == YES) {
NSLog(@"回到主线程了");
}
});
//用过这种方法,还是同步在当前线程上
dispatch_sync(queue, ^{
///当前线程
});
}
-(void)mutableTheard
{
///创建自动释放池
@autoreleasepool {
[self performSelectorOnMainThread:@selector(mainTheard) withObject:nil waitUntilDone:YES];// 回到主线程
}
}
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原文地址:http://www.cnblogs.com/canghaixiaoyuer/p/4561434.html