1 //block传值
2 __weak SubjectViewController *weakSelf = self;//解决强强引用的问题
3 cell.clickBlock = ^(AppItem *aItem){
4 DetailViewController *dvc = [[DetailViewController alloc]init];
5 dvc.applicationId = aItem.applicationId;
6
7 weakSelf.hidesBottomBarWhenPushed = YES;
8 [weakSelf.navigationController pushViewController:dvc animated:YES];
9 weakSelf.hidesBottomBarWhenPushed = NO;
10 };
11
12
13
14 //block的循环引用(你持有我,我持有你)
15 /*
16 1.self(controller) self.view 持有红色的view
17 2.因为使用了 block,红色的 view 持有self
18 */
19 // self(控制器) -> self.view -> 红色的 view -> block -> self
20
21
22 __weak SecondViewController *tmpSelf = self;
23 [viewRed didBeganBlock:^(UIView *view) {
24 NSLog(@"began");
25 tmpSelf.view.backgroundColor = [UIColor blueColor];
26 } movedBlock:^(UIView *view) {
27 NSLog(@"move");
28 } endBloac:^(UIView *view) {
29 NSLog(@"end");
30 }];
