模态 - block

//模态—block

#pragma mark - 添加联系人页面跳转

- (void)cancelBarButtonItemAction:(UIBarButtonItem *)sender

{

// 推出的模态视图添加导航控制器

AddContactViewController *addcontacVC = [[[AddContactViewController alloc] init ] autorelease];

// 实现block的赋值

addcontacVC.senderBlock = ^(Contact *c){

// 当block被调用时候, 内部才会执行

NSString *key = [c.name substringToIndex:1];

// 将数据添加到数组的第一个元素的位置

[_allDataMutableDict[key] insertObject:c atIndex:0];

// 获取key的下标 也就是分区的下标

NSInteger index = [_allKeysMutableArray indexOfObject:key];

// 创建表示位置的NSIndexPath对象

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:index];

// 更新页面

[self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];

};

UINavigationController *addcontacNC = [[[UINavigationController alloc]initWithRootViewController:addcontacVC]autorelease];

[self.navigationController presentViewController:addcontacNC animated:YES completion:nil];

}

//按钮

self.loginButton = [UIButton buttonWithType:UIButtonTypeSystem];

_loginButton.frame = CGRectMake(50, 300, 100, 30);

[_loginButton setTitle:@"登录" forState:UIControlStateNormal];

_loginButton.backgroundColor = [UIColor cyanColor];

[self addSubview:_loginButton];

// 创建子视图控制器

ActivityListViewController *activityTVC = [[[ActivityListViewController alloc] initWithStyle:UITableViewStylePlain] autorelease];

// 设置tabBarItem

activityTVC.tabBarItem = [[[UITabBarItem alloc] initWithTitle:@"活动" image:[UIImage imageNamed:@"iconfont-hanbao"] selectedImage:nil] autorelease];

// 使用导航控制器进行包裹

UINavigationController *activityNC = [[[UINavigationController alloc] initWithRootViewController:activityTVC] autorelease];

// 添加到标签控制器汇总

self.viewControllers = @[activityNC];

…….未完待续....