- (void)viewDidLoad
{
[super viewDidLoad];
NSBlockOperation *operation1 = [NSBlockOperation blockOperationWithBlock:^{
NSLog(@"---下载图片----11---%@", [NSThread currentThread]);
}];
[operation1 addExecutionBlock:^{
NSLog(@"---下载图片----12---%@", [NSThread currentThread]);
}];
NSBlockOperation *operation2 = [NSBlockOperation blockOperationWithBlock:^{
NSLog(@"---下载图片----2---%@", [NSThread currentThread]);
}];
NSBlockOperation *operation3 = [NSBlockOperation blockOperationWithBlock:^{
NSLog(@"---下载图片----3---%@", [NSThread currentThread]);
}];
NSBlockOperation *operation4 = [NSBlockOperation blockOperationWithBlock:^{
NSLog(@"---下载图片----4---%@", [NSThread currentThread]);
}];
// 1.创建队列
NSOperationQueue *queue = [[NSOperationQueue alloc] init];
// 主队列
// NSOperationQueue *queue = [NSOperationQueue mainQueue];
// 2.添加操作到队列中（自动异步执行）
[queue addOperation:operation1];
[queue addOperation:operation2];
[queue addOperation:operation3];
[queue addOperation:operation4];
}