NSOperationQueue 依赖操作

发布时间：2020-12-13 21:59:13 所属栏目：百科来源：网络整理

导读：NSOperationQueue * operationQueue = [[NSOperationQueue alloc]init]; NSInvocationOperation * invocationOp = [[NSInvocationOperation alloc]initWithTarget: self selector: @selector (invocationRun) object: nil ]; NSBlockOperation * blockOp = [

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

    NSInvocationOperation * invocationOp = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(invocationRun) object:nil];
    NSBlockOperation * blockOp = [NSBlockOperation blockOperationWithBlock:^{
        NSLog(@"blockOpRun_0");
    }];
    //invocationOp 依赖 blockOp => 也就是说 先执行 blockOp 然后再执行invocationOp
    [invocationOp addDependency:blockOp];

    [operationQueue addOperation:invocationOp];
    [operationQueue addOperation:blockOp];

（编辑：李大同）

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